@misc{12845, abstract = {{Forest succession alters soil organic carbon (SOC) dynamics by changing litter quality of litter entering the soil and affecting microbial communities. However, few studies have explored how litter quality interacts with soil fungal communities to regulate SOC mineralization during successional changes in forest succession. We studied the relationship between litter quality, SOC mineralization, and associated fungal composition by conducting an in-situ decomposition experiment in a natural broadleaf forest and a pure Moso bamboo (Phyllostachys edulis) forest, where the succession in former forest arrested by structurally inferior bamboo grasses. On average, topsoil organic carbon mineralization increased by 73 % and subsoil by 233 % (only during autumn) following the broadleaf forest transitions to bamboo dominance. More decomposable litterfall in the bamboo forests increased the abundance of saprophytic fungi (e.g., Mortierellales and Chaetothyriales orders) and enhanced topsoil degradation functions, promoting SOC mineralization compared to the broadleaf forest. Higher water-soluble organic carbon content increased subsoil organic carbon mineralization by increasing the abundance of Mortierellales order. Our results emphasized the importance of interaction between litter quality and fungal composition (especially saprophytic fungi) regulated SOC mineralization in arrested succession. The enhanced SOC mineralization after the broadleaf forest transition to bamboo forest suggested that the traits of Moso bamboo, such as fast litterfall decomposition, can accelerate SOC mineralization to reinforce its dominance. By examining the role of microbial decomposition in regulating soil nutrient dynamics in the context of arrested succession, our study offered a unique mechanistic perspective on the belowground drivers of bamboo dominance, with important implications for forest structure and function.}}, author = {{Teng, Qiumei and Fang, Tao and Zhang, Qianqian and Gunina, Anna and Zheng, Aiyu and Song, Zhaoliang and Zhou, Jingyun and Chang, Scott X. and Li, Yongchun}}, booktitle = {{ Applied soil ecology : a section of agriculture, ecosystems & environment}}, issn = {{1873-0272}}, keywords = {{Arrested succession, Moso bamboo, Litter decomposition, SOC mineralization, Soil fungal composition, Water-soluble organic carbon content}}, publisher = {{Elsevier BV}}, title = {{{Successional transition from broadleaf to bamboo forests promotes fungal communities and soil carbon mineralization following the altered litterfall quality}}}, doi = {{10.1016/j.apsoil.2025.106006}}, volume = {{209}}, year = {{2025}}, } @misc{12849, abstract = {{Trophic interactions determine food web structure and influence biodiversity, community structure, ecosystem functioning, and food web responses to global change. These interactions are highly flexible, changing on temporal scales from diurnal to evolutionary times due to phenotypic plasticity, rapid evolution and species sorting. Small-scale experimental and theoretical studies of plankton interactions have demonstrated a high relevance of this flexibility for community dynamics and ecosystem processes in small, simplified communities. However, the extent to which this flexibility affects larger-scale systems, for example, global ocean dynamics and their responses to global change, is still poorly understood. Differences in methodology, focus and terminology between research disciplines limit our ability to project established effects of flexible trophic interactions onto larger spatial and temporal scales. We propose to bridge this gap with a general framework for upscaling knowledge from small-scale research to large-scale models. Building on examples from plankton communities, we use this framework to show how mechanisms demonstrated in small-scale studies can be linked to ecosystem functions relevant at large scales. We argue for incorporating flexibility in large-scale process-based models to improve their realism and predictive power, and discuss challenges and ways forward for achieving this. Finally, we suggest several concrete ways for upscaling small-scale studies to make their findings more relevant for large-scale research, to close existing knowledge gaps and to improve our understanding of how flexible trophic interactions affect dynamics and processes across scales.}}, author = {{van Velzen, Ellen and Wollrab, Sabine and Kerimoglu, Onur and Gaedke, Ursula and Grossart, Hans-Peter and Kasada, Minoru and Klip, Helena C. L. and Moorthi, Stefanie and Shatwell, Tom and Thongthaisong, Patch and Friederike Prowe, A. E.}}, booktitle = {{Ecosystems}}, issn = {{1435-0629}}, keywords = {{Functional traits, Plankton interactions, Rapid evolution, Phenotypic plasticity, Ecosystem functioning, Global change, Upscaling, Adaptation}}, number = {{2}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Flexibility in Aquatic Food Web Interactions: Linking Scales and Approaches}}}, doi = {{10.1007/s10021-025-00968-7}}, volume = {{28}}, year = {{2025}}, } @misc{12850, abstract = {{Winter cover crops (CCs) provide substantial agronomic and environmental benefits, yet their influence on nitrogen (N) fertilization requirements and yield outcomes for subsequent crops remains underexplored. This study investigates the economic optimal nitrogen rates (EONRs) and corresponding yield effects for first (silage maize or sugar beet) and second (winter wheat) succeeding crops following CCs. Four CC species from different functional groups were compared to a bare fallow control on contrasting sandy and loamy soils across four German field sites over two consecutive cropping sequences. Results revealed opposing effects: reduced EONR and increased N use efficiency on sandy soils in silage maize sequences, particularly following oil radish and rye CCs, but increased EONR on loamy soils for sugar beet sequences, with vetch CC showing the most favourable outcomes. Yield impacts varied by CC type and soil, with oil radish consistently enhancing yields across sites. However, CC effects on EONR were not correlated with pre-winter N uptake in CC biomass, challenging simple N budgeting practices. Environmental analysis highlighted potential greenhouse gas savings via reduced fertilizer inputs on sandy soils but increased upstream emissions on loamy sites. These findings emphasize the need for site-specific CC selection to balance economic and environmental benefits, with oil radish and vetch emerging as optimal choices in our trials for sandy and loamy soils, respectively.}}, author = {{Kühling, Insa and Pahlmann, Ingo and Räbiger, Thomas and Helfrich, Mirjam and Flessa, Heinz and Schlathölter, Michaela and Koch, Heinz-Josef and Essich, Lisa and Ruser, Reiner and Reinhard-Kolempas, Marilena and Hoffmann, Annette and Kage, Henning}}, booktitle = {{Nutrient Cycling in Agroecosystems}}, issn = {{1573-0867}}, keywords = {{Catch crop, Silage maize, Sugar beet, Winter wheat, N-transfer, Cropping sequence, N recommendations}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Legacies of winter cover crops lead to opposing optimal N fertilisation rates and yields in first and second subsequent crops on contrasting soils}}}, doi = {{10.1007/s10705-025-10400-0}}, year = {{2025}}, } @misc{12853, abstract = {{Lentic waters integrate atmosphere and catchment processes, and thus ultimately capture climate signals. However, studies of climate warming effects on lentic waters usually do not sufficiently account for a change in heat flux from the catchment through altered inflow temperature and discharge under climate change. This is particularly relevant for reservoirs, which are highly impacted by catchment hydrology and may be affected by upstream reservoirs or pre‐dams. This study explicitly quantified how the catchment and pre‐dams modify the thermal response of Rappbode Reservoir, Germany's largest drinking water reservoir system, to climate change. We established a catchment‐lake modeling chain in the main reservoir and its two pre‐dams utilizing the lake model GOTM, the catchment model mHM, and the stream temperature model Air2stream, forced by an ensemble of climate projections under RCP2.6 and 8.5 warming scenarios. Results exhibited a warming of 0.27/0.15°C decade−1 for the surface/bottom temperatures of the main reservoir, with approximately 8%/24% of this warming attributed to the catchment warming, respectively. The catchment warming amplified the deep water warming more than at the surface, contrary to the atmospheric warming effect, and advanced stratification by about 1 week, while having a minor impact on stratification intensity. On the other hand, pre‐dams reduced the inflow temperature into the main reservoir in spring, and consequently lowered the hypolimnetic temperature and postponed stratification onset. This shielded the main reservoir from climate warming, although overall the contribution of pre‐dams was minimal. Altogether, our study highlights the importance of catchment alterations and seasonality when projecting reservoir warming, and provides insights into catchment‐reservoir coupling under climate change.}}, author = {{Gai, Bo and Kumar, Rohini and Hüesker, Frank and Mi, Chenxi and Kong, Xiangzhen and Boehrer, Bertram and Rinke, Karsten and Shatwell, Tom}}, booktitle = {{ Water resources research : an AGU journal}}, issn = {{1944-7973}}, keywords = {{climate change, coupled catchment-lake model, thermal characteristics, drinking water reservoir management, GOTMstratification}}, number = {{1}}, publisher = {{American Geophysical Union (AGU)}}, title = {{{Catchments Amplify Reservoir Thermal Response to Climate Warming}}}, doi = {{10.1029/2023wr036808}}, volume = {{61}}, year = {{2025}}, } @misc{12859, abstract = {{One of the greatest challenges facing environmental science is to better understand the impacts of predicted future changes in the terrestrial hydrological cycle. It has been recognized that human activities play a key role and must therefore be considered in future climate simulations. The representation of anthropization in land surface schemes within global earth system models is at a relatively nascent stage and must be improved for more accurate future projections of water resources. The understanding of the impact of anthropogenic processes has been hampered by the lack of consistent and extensive observations. Here, we present the Land surface Interactions with the Atmosphere over the Iberian Semi-arid Environment (LIAISE) project field campaign which brought together ground-based (surface energy budget estimated at 7 sites, 269 radio soundings made at 2 sites and multiple remote sensing instruments for profiling the lower atmosphere), airborne measurements (3 airplanes and numerous drones measuring surface and atmospheric properties) and satellite data (to derive estimates of irrigation timing, soil moisture, evapotranspiration and surface temperature) to improve our understanding of key natural and anthropogenic land processes and boundary layer feedbacks. The study area is in the Ebro basin of northeastern Spain in a hot, dry Mediterranean climate, with a sharp demarcation between a vast intensively irrigated region and a much drier rainfed zone to the east. Analysis of the observations reveal strong surface heterogeneities of evapotranspiration within the irrigated zone (differences upwards of approximately 7 mm day-1 between fields), linked to the crop type, vegetation phenology and soil moisture, all of which were modulated by irrigation. The significant surface flux differences between the irrigated and rainfed zones were found to result in strongly contrasting atmospheric boundary layer properties (between 2 supersites​ separated by 14 km) extending upwards through the lowest several km of the atmosphere.}}, author = {{Boone, Aaron and Bellvert, Joaquim and Best, Martin and Brooke, Jennifer K. and Canut-Rocafort, Guylaine and Cuxart, Joan and Hartogensis, Oscar and Moigne, Patrick Le and Miró, Josep Ramon and Polcher, Jan and Price, Jeremy and Seguí, Pere Quintana and Bech, Joan and Bezombes, Yannick and Branch, Oliver and Cristóbal, Jordi and Dassas, Karin and Fanise, Pascal and Gibert, Fabien and Goulas, Yves and Groh, Jannis and Hanus, Jan and Hmimina, Gabriel and Jarlan, Lionel and Kim, Ed and Dantec, Valérie Le and Page, Michel Le and Lohou, Fabienne and Lothon, Marie and Mangan, Mary Rose and Martí, Belén and Martínez-Villagrasa, Daniel and McGregor, James and Kerr-Munslow, Amanda and Ouaadi, Nadia and Philibert, Alban and Quiros-Vargas, Juan and Rascher, Uwe and Siegmann, Bastian and Udina, Mireia and Vial, Antoine and Wrenger, Burkhard and Wulfmeyer, Volker and Zribi, Mehrez}}, booktitle = {{Journal of the European Meteorological Society}}, issn = {{2950-6301}}, keywords = {{Anthropization, Irrigation, Agriculture, Field campaign, Surface energy budget, Evapotranspiration, Land–atmosphere interactions, Ebro basin}}, number = {{Dez.}}, publisher = {{Elsevier BV}}, title = {{{The Land Surface Interactions with the Atmosphere over the Iberian Semi-Arid Environment (LIAISE) field campaign}}}, doi = {{10.1016/j.jemets.2025.100007}}, volume = {{2}}, year = {{2025}}, } @misc{12896, abstract = {{Poly-3-hydroxybutyrate (P3HB) is a promising alternative to persistent conventional plastics, capable of biodegrading within months. However, its microbial-driven degradation raises concerns about nutrient immobilization and impacts on plant growth. The biodegradation process occurs in multiple stages, during which shifts in the microbial community can alter soil properties and influence utilization of both intrinsic and polymer-derived organic matter. This study employs a novel approach to investigate how nutrient dynamics during the late stage of P3HB biodegradation affect lettuce (Lactuca sativa var. capitata cv. Brilliant) growth. Soil-to-sand mixtures (100_0, 80_20, 60_40, 40_60, 20_80, and 0_100 ratios) were spiked with P3HB, allowed to biodegrade for eight weeks, and then planted with sprouted lettuce seeds, which were cultivated for another eight weeks. P3HB addition inhibited plant growth and root development in all soil-sand mixtures. However, increasing the sand proportion enhanced plants' nitrogen content by 13-45 % compared to 100 % soil + P3HB. Depending on the sand-to-soil ratio, P3HB stimulated most enzymes involved in carbon, nitrogen and phosphorus acquisition. Basal and substrate-induced respirations were 9-209 % higher under P3HB addition compared to P3HB-free soil, likely due to an increase in the stabilized soil organic matter fraction. Residual P3HB analysis revealed that diluting soil with 20 % sand accelerated biodegradation, despite a decrease in bacterial abundance. In the 80_20 variant, the microbial community shifted toward higher fungal abundance, 19 % more than in 100_0 soil. While microbial proliferation was observed, it effect was outweighed by negative impacts on dry aboveground and root biomass. The highest P3HB biodegradation rate occurred in the 80_20 variant, underscoring soil texture as a critical factor in P3HB biodegradation. While microbial communities can degrade bioplastics, this process may compromise plant nutrient availability and hinder plant growth. }}, author = {{Brtnicky, Martin and Mustafa, Adnan and Holatko, Jiri and Gunina, Anna and Ondrasek, Gabrijel and Naveed, Muhammad and Hammerschmiedt, Tereza and Kamenikova, Eliska and Alamri, Saud and Siddiqui, Manzer H. and Kintl, Antonin and Baltazar, Tivadar and Malicek, Ondrej and Kucerik, Jiri}}, booktitle = {{Environmental Research}}, issn = {{1096-0953}}, keywords = {{Bioplastics, Nutrient acquisition, Plant growth reduction, Soil microbes, Soil texture.}}, publisher = {{Elsevier BV}}, title = {{{Soil texture-driven modulation of poly-3-hydroxybutyrate (P3HB) biodegradation: Microbial shifts, and trade-offs between nutrient availability and lettuce growth}}}, doi = {{10.1016/j.envres.2025.121618}}, volume = {{278}}, year = {{2025}}, } @misc{13180, abstract = {{HUMAN 2025 is the 8th workshop of a series for the ACM Hypertext conferences. The HUMAN workshop has a strong focus on the user and brings together user‑centered hypertext with artificial intelligence to build intelligent hypertext systems. The user-centric view on hypertext not only includes user interfaces and interaction, but also discussions about hypertext application domains as well as human-centered AI. Furthermore, the workshop raises the question of how original hypertext ideas (e.g., Doug Engelbart’s “augmenting human intellect” [7] or Jeff Conklin’s “hypertext as a computer-based medium for thinking and communication” [6]) can improve today’s hypertext systems.}}, author = {{Rubart, Jessica and Atzenbeck, Claus}}, booktitle = {{Adjunct Proceedings of the 36th ACM Conference on Hypertext and Social Media (HT Adjunct 2025)}}, editor = {{Zheng, Yong and Boratto, Ludovico}}, location = {{Chicago, USA}}, pages = {{49--50}}, publisher = {{ACM}}, title = {{{Human Factors in Hypertext (HUMAN’25)}}}, doi = {{https://doi.org/10.1145/3720533.3756895}}, year = {{2025}}, } @misc{13236, author = {{Pilar von Pilchau, Katharina}}, location = {{Koblenz}}, title = {{{Identifikation von Schlüsselflächen zum Wasserrückhalt in der Fläche - Eine GIS-basierte Analyse in einem hydrologischen Einzugsgebiet im Weserbergland}}}, year = {{2025}}, } @misc{13318, author = {{Pilar von Pilchau, Katharina and Maas, Klaus}}, isbn = {{978-3-910240-04-9}}, pages = {{57}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe}}, title = {{{Leitfaden für die GIS-basierte Fließpfadberechnung}}}, doi = {{https://doi.org/10.25644/7cg5-s973}}, year = {{2025}}, } @misc{13529, abstract = {{The proliferation of misinformation is one of the most pressing challenges in today’s digital landscape, due to its far-reaching implications for public health, economic stability, trust in governmental institutions, and societal cohesion. Despite efforts to regulate online platforms and limit the spread of misinformation, many individuals are left behind because of their low digital literacy, level of education, and other contributing factors. In this context, we explore the use of Large Language Models (LLMs) to identify misinformation and we evaluate the capabilities of GPT-4.1-mini, as a representative example of these models. We then discuss how LLMs can help empower users to critically create and share information, thereby fostering more resilient online communities. We also present a set of possible interaction patterns for content creation and moderation.}}, author = {{Franco, Mirko and Grimm, Valentin and Herder, Eelco}}, booktitle = {{Proceedings of the 2025 International Conference on Information Technology for Social Good}}, editor = {{Marquez-Barja, Johann and Bujari, Armir and Slamnik-Kriještorac, Nina and Sabbioni, Andrea}}, isbn = {{979-8-4007-2089-5}}, keywords = {{misinformation, fake news, large language models, online social networks}}, location = {{Antwerp, Belgium}}, pages = {{244 -- 252}}, publisher = {{ACM}}, title = {{{Preventing Accidental Sharing of Misinformation Using Large Language Models}}}, doi = {{10.1145/3748699.3749798}}, year = {{2025}}, } @misc{11498, author = {{Nether, Ulrich and Minge, Michael and Rubart, Jessica and Pieper, Svenja and Tasci, Aylin and Hartmann, Lara and Herrmann, Kristina}}, keywords = {{Diversity, Equity, Inclusion, Teaching, University, interdisciplinary}}, pages = {{141}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe}}, title = {{{DiversityLab TH OWL}}}, year = {{2024}}, } @misc{11929, abstract = {{Starkregenereignisse haben das Potenzial, erhebliche Mengen organischen Materials mit sich zu tragen, und können dadurch für enormen Schlammeintrag und Wassermassen in der Talsohle sorgen. Mit dem Wissen, wo Oberflächenabfluss entsteht und welche Faktoren einen Einfluss auf die Abflussbildung haben, können Maßnahmen geplant werden, die eine Sturzflut noch vor dem Entstehen verhindern oder zumindest abmildern. Für flächendeckende Analysen ist eine entsprechende Datenbasis notwendig. Als relevante Einflussparameter wurden anhand der Literatur folgende Informationen ausgewählt: Klima, Relief, Bodenkunde, Geologie, Landnutzung, Bodenverdeckung und Oberflächenverschlämmung sowie Bodenbearbeitungs(-systeme). Für diese Schlagworte wurde eine Datenrecherche hinsichtlich Verfügbarkeit und Qualität für die Bundesländer Nordrhein-Westfalen (NRW) und Niedersachsen (NDS) durchgeführt. Die Datenrecherche hat ergeben, dass flächendeckend eine Vielzahl an nützlichen Geodaten − vor allem für landwirtschaftliche Flächen − vorhanden sind. Die Informationslage kann dabei zum Zeitpunkt der Recherche in NRW insgesamt als besser bewertet werden. Es wurden nicht nur mehr Datensätze gefunden, sondern teilweise auch solche, die im Vergleich zu NDS deutlich detaillierter sind. Bezüglich der direkten Verfügbarkeit als Download oder Webdienst wurde festgestellt, dass in NDS die Mehrheit der Datensätze zum Zeitpunkt der Recherche nur auf Anfrage und verbunden mit Gebühren erhältlich sind.}}, author = {{Pilar von Pilchau, Katharina and Maas, Klaus and Weber, Verena}}, booktitle = {{Umweltinformationssysteme - Digitalisierung im Zeichen des Klimawandels und der Energiewende (UIS 2023)}}, editor = {{Fuchs-Kittowski, Frank and Abecker, Andreas and Hosenfeld, Friedhelm and Reineke, Anja and Jolk, Christian}}, isbn = {{978-3-658-43734-3}}, keywords = {{Starkregen, OpenData, Fließwege, Dominant Runoff Process, Ländlicher Raum}}, location = {{Höxter}}, pages = {{155--166}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Verfügbarkeit, Qualität und Informationsgehalt von Geodaten für eine Fließweganalyse im Kontext Starkregen im ländlich geprägten Raum}}}, doi = {{10.1007/978-3-658-43735-0_11}}, year = {{2024}}, } @misc{12048, abstract = {{Interactive stories can be an effective approach for teaching purposes. One shortcoming is the effort necessary to author and create these stories, especially complex storylines with choices for the readers. Based on recent advances in Natural Language Processing (NLP), new opportunities arise for assistance systems in the context of interactive stories. In our work, we present an authoring approach and prototypical tool for the creation of visual comic-strip like interactive stories, a type of hypercomics, that integrate an Artificial Intelligence (AI) assistance. Such comics are already used in our Gekonnt hanDeln web platform. The AI assistance provides suggestions for the overall story outline as well as how to design and write individual story frames. We provide a detailed description about the approach and its prototypical implementation. Furthermore, we present a study evaluating the prototype with student groups and how the prototype evolved in an iterative style based on the students’ feedback.}}, author = {{Grimm, Valentin and Rubart, Jessica}}, booktitle = {{HT '24: Proceedings of the 35th ACM Conference on Hypertext and Social Media}}, isbn = {{979-8-4007-0595-3 }}, keywords = {{Storytelling, Authoring, GPT, Hypercomics, Large Language Models}}, location = {{Poznan, Poland}}, pages = {{88--97}}, publisher = {{Association for Computing Machinery (ACM)}}, title = {{{Authoring Educational Hypercomics assisted by Large Language Models}}}, doi = {{10.1145/3648188.3675124}}, year = {{2024}}, } @misc{12207, abstract = {{Lakes represent a vital source of freshwater, accounting for 87% of the Earth’s accessible surface freshwater resources and providing a range of ecosystem services, including water for human consumption. As climate change continues to unfold, understanding the potential evaporative water losses from lakes becomes crucial for effective water management strategies. Here we investigate the impacts of climate change on the evaporation rates of 23 European lakes and reservoirs of varying size during the warm season (July–September). To assess the evaporation trends, we employ a 12-member ensemble of model projections, utilizing three one-dimensional process-based lake models. These lake models were driven by bias-corrected climate simulations from four General Circulation Models (GCMs), considering both a historical (1970–2005) and future (2006–2099) period. Our findings reveal a consistent projection of increased warm-season evaporation across all lakes this century, though the magnitude varies depending on specific factors. By the end of this century (2070–2099), we estimate a 21%, 30% and 42% average increase in evaporation rates in the studied European lakes under RCP (Representative Concentration Pathway) 2.6, 6.0 and 8.5, respectively. Moreover, future projections of the relationship between precipitation (P) and evaporation (E) in the studied lakes, suggest that P-E will decrease this century, likely leading to a deficit in the availability of surface water. The projected increases in evaporation rates underscore the significance of adapting strategic management approaches for European lakes to cope with the far-reaching consequences of climate change.}}, author = {{La Fuente, Sofia and Jennings, Eleanor and Lenters, John D. and Verburg, Piet and Kirillin, Georgiy and Shatwell, Tom and Couture, Raoul-Marie and Côté, Marianne and Vinnå, C. Love Råman and Woolway, R. Iestyn}}, booktitle = {{Climatic Change}}, issn = {{1573-1480}}, keywords = {{Multi-model, Water availability, Europe, Ensemble, Lake evaporation, Latent heat flux}}, number = {{12}}, publisher = {{Springer}}, title = {{{Increasing warm-season evaporation rates across European lakes under climate change}}}, doi = {{10.1007/s10584-024-03830-2}}, volume = {{177}}, year = {{2024}}, } @misc{12209, abstract = {{Net ecosystem production (NEP) is an important indicator of lake ecosystem function and integrity. An earlier study, restricted to one geographical region, indicated that oxygen saturation levels (DO%) might be used to predict daily NEP in shallow lakes. To test the generality of the method, we used DO% data collected in a standardised pan-European mesocosm experiment with contrasting trophic states and water levels covering a large climate gradient (from Sweden to Turkey). We corroborated these data with process-based DO simulations. The NEP ~ DO% relation depended on factors influencing gas transfer: water depth and wind. The NEP ~ DO% relation per volume became weaker with increasing depth (1–2 m) but was independent of depth when area based. Simulations indicated that the marginalisation of the depth was sensitive to wind conditions. Trophic status, temperature and light showed no or only marginal (climate zone) effects (experimental data), while the simulations indicated influence of those factors under particular wind–depth conditions. We confirmed that when considering also wind and depth effects, midday DO% potentially provides reliable estimates of daily NEP. Therefore, historical monitoring data of DO% might be used to estimate NEP, and process-based oxygen models may be valuable tool therein. We encourage further tests.}}, author = {{Cao, Yu and Scharfenberger, Ulrike and Shatwell, Tom and Adrian, Rita and Agasild, Helen and Angeler, David G. and Beklioğlu, Meryem and Çakıroğlu, Ayşe ldil and Hejzlar, Josef and Papastergiadou, Eva and Šorf, Michal and Stefanidis, Kostas and Søndergaard, Martin and Zingel, Priit and Jeppesen, Erik}}, booktitle = {{Hydrobiologia : acta hydrobiologica, hydrographica, limnologica et protistologica }}, issn = {{1573-5117}}, keywords = {{Metabolism, Simple models, Process-based models, Cross-system analyses}}, number = {{2}}, pages = {{471--487}}, publisher = {{Springer}}, title = {{{Predicting daily net ecosystem production in shallow lakes from dissolved oxygen saturation levels: a pan-European mesocosm experiment and modelling approach}}}, doi = {{10.1007/s10750-024-05714-z}}, volume = {{852}}, year = {{2024}}, } @misc{12211, abstract = {{Aquatic ecosystems are threatened by eutrophication from nutrient pollution. In lakes, eutrophication causes a plethora of deleterious effects, such as harmful algal blooms, fish kills and increased methane emissions. However, lake-specific responses to nutrient changes are highly variable, complicating eutrophication management. These lake-specific responses could result from short-term stochastic drivers overshadowing lake-independent, long-term relationships between phytoplankton and nutrients. Here, we show that strong stoichiometric long-term relationships exist between nutrients and chlorophyll a (Chla) for 5-year simple moving averages (SMA, median R² = 0.87) along a gradient of total nitrogen to total phosphorus (TN:TP) ratios. These stoichiometric relationships are consistent across 159 shallow lakes (defined as average depth < 6 m) from a cross-continental, open-access database. We calculate 5-year SMA residuals to assess short-term variability and find substantial short-term Chla variation which is weakly related to nutrient concentrations (median R² = 0.12). With shallow lakes representing 89% of the world’s lakes, the identified stoichiometric long-term relationships can globally improve quantitative nutrient management in both lakes and their catchments through a nutrient-ratio-based strategy.}}, author = {{Graeber, Daniel and McCarthy, Mark J. and Shatwell, Tom and Borchardt, Dietrich and Jeppesen, Erik and Søndergaard, Martin and Lauridsen, Torben L. and Davidson, Thomas A.}}, booktitle = {{Nature Communications}}, issn = {{2041-1723}}, number = {{1}}, publisher = {{Springer Nature}}, title = {{{Consistent stoichiometric long-term relationships between nutrients and chlorophyll-a across shallow lakes}}}, doi = {{10.1038/s41467-024-45115-3}}, volume = {{15}}, year = {{2024}}, } @misc{12212, abstract = {{Water quality and hypoxia in lakes and reservoirs are strongly associated with water renewal. Yet vertical water exchange is still not fully understood and challenging to evaluate in highly dynamic systems. Here, we applied a scaling approach using the vertical timescale, vertical water age (VWA), defined as time since a water parcel last touched the water surface. We established a 3D hydrodynamic-based age model to quantify the vertical water renewal in Xiangxi Bay, a tributary bay of the Three Gorges Dam. The integrated effects of hydrodynamic processes like stratification, intruding density currents from the mainstream, and upstream inflow on the vertical renewal were accounted for. Results indicated that the spatial–temporal distribution of VWA in Xiangxi Bay depended on stratification and forms of intruding density currents. Age was large in spring and summer, and small in autumn and winter, reaching a maximum of 25 days in April. The vertical water renewal was faster during bottom intrusions from the mainstream than during middle and surface intrusions. At times, the epilimnion contained old water due to circulations, and the hypolimnion contained young water due to upstream flushing. In contrast to natural lakes, the bottom water was often younger than overlying intermediate waters. This demonstrated that mixed layer depth was insufficient to fully capture the vertical exchange in riverine systems with significant surface/bottom intrusion. The findings suggested VWA as a quantitative measure of vertical water transport in highly dynamic systems and its usability for environmental water management.}}, author = {{Gai, Bo and Boehrer, Bertram and Sun, Jian and Li, Yuanyi and Lin, Binliang and Shatwell, Tom}}, booktitle = {{Journal of Hydrology}}, issn = {{1879-2707}}, keywords = {{Vertical water renewal, Water age, Thermal stratification, Hypoxia, 3D hydrodynamic-based age model, Water environmental management}}, number = {{3}}, publisher = {{Elsevier BV}}, title = {{{Vertical water age and water renewal in a large riverine reservoir}}}, doi = {{10.1016/j.jhydrol.2024.130701}}, volume = {{631}}, year = {{2024}}, } @misc{12213, abstract = {{Within freshwater networks, lakes and reservoirs are reactors that modify nutrient dynamics. Their functioning is based on an interplay of hydrological and biogeochemical processes, rendering them vulnerable to climate change. Future changes in catchment characteristics are likely to alter the timing and magnitude of nutrient concentrations in discharge. This study investigated the impact of changing variability of nutrient concentrations on lake and reservoir dynamics. We examined intraannual nutrient retention and analyzed the role of reservoirs in reconfiguring the variability of nutrients. Utilizing the 1D lake model GOTM-WET, we simulated nutrient processing in a mesotrophic reservoir. Further, we performed scenario simulations by modifying the variability of inflow nitrogen and phosphorus concentrations. Our findings indicate that the reservoir removed ∼4% and ∼12% of total nitrogen (TN) and total phosphorus (TP), respectively. Particulate fractions were retained efficiently, but there was a net export of dissolved organic fractions. Regarding mixing and stratification periods, however, we observed net nitrogen export during stratification in certain years. During stratification, outflow concentration variability remained relatively unchanged for TN and TP compared to inflow concentrations. Conversely, phosphate and nitrate concentration variability increased in the outflow because of in-lake assimilation and the influence of hydrological events. With increasing inflow concentration variability during stratification, there was decreased removal of TN and TP by the reservoir, but increased variability of concentration. By evaluating the lake's capacity to attenuate variability of nutrient inflows under altered conditions, there are opportunities to improve monitoring of nutrient export and evaluate the potential impact of nutrient peaks on downstream drinking water resources and ecosystems.}}, author = {{Determann, Maria and Musolff, Andreas and Frassl, Marieke A. and Rinke, Karsten and Shatwell, Tom}}, booktitle = {{Inland waters : journal of the International Society of Limnology}}, issn = {{2044-205X}}, keywords = {{catchment–lake interaction, concentration variability, GOTM-WET, lake nutrient export, reservoir biogeochemistry}}, number = {{4}}, pages = {{560--575}}, publisher = {{Freshwater Biological Association}}, title = {{{Nutrient retention in a small reservoir under changed variability of inflow nutrient concentration}}}, doi = {{10.1080/20442041.2024.2305105}}, volume = {{13}}, year = {{2024}}, } @misc{12215, abstract = {{Water-level reduction frequently occurs in deep reservoirs, but its effect on dissolved oxygen concentration is not well understood. In this study we used a well-established water quality model to illustrate effects of water level dynamics on oxygen concentration in Rappbode Reservoir, Germany. We then systematically elucidated the potential of selective withdrawal to control hypoxia under changing water levels. Our results documented a gradual decrease of hypolimnetic oxygen concentration under decreasing water level, and hypoxia occurred when the initial level was lower than 410 m a.s.l (71 m relative to the reservoir bottom). We also suggested that changes of hypoxic region, under increasing hypolimnetic withdrawal discharge, followed a unimodal trajectory with the maximum hypoxic area projected under the discharge between 3 m3/sec and 4 m3/sec. Besides, our results illustrated the extent of hypoxia was most effectively inhibited if the withdrawal strategy was applied at the end of stratification with the outlet elevation at the deepest part of the reservoir. Moreover, hypoxia can be totally avoided under a hybrid elevation withdrawal strategy using surface withdrawal during early and mid stratification, and deep withdrawal at the end of stratification. We further confirmed the decisive role of thermal structure in the formation of hypoxia under water-level reduction and withdrawal strategies. We believe the conclusions from this study can be applied to many deep waters in the temperate zone, and the results should guide stakeholders to mitigate negative impacts of hypoxia on aquatic ecosystems.}}, author = {{Mi, Chenxi and Rinke, Karsten and Shatwell, Tom}}, booktitle = {{Journal of Environmental Sciences}}, issn = {{1878-7320}}, keywords = {{Hypoxia, Water-level reduction, Hypolimnetic water withdrawal, Stratification phenology, Water quality simulation, Sediment oxygen demand}}, number = {{12}}, pages = {{127--139}}, publisher = {{Elsevier BV}}, title = {{{Optimizing selective withdrawal strategies to mitigate hypoxia under water-level reduction in Germany's largest drinking water reservoir}}}, doi = {{10.1016/j.jes.2023.06.025}}, volume = {{146}}, year = {{2024}}, } @proceedings{12291, editor = {{Atzenbeck, Claus and Rubart, Jessica}}, isbn = {{979-8-4007-1120-6}}, location = {{Poznan, Poland}}, publisher = {{ACM}}, title = {{{Proceedings of the 7th Workshop on Human Factors in Hypertext (HUMAN'24)}}}, year = {{2024}}, } @misc{12383, abstract = {{Data stories are about revealing and communicating insights from complex data. In this paper, we propose conversational data stories, which support end users in understanding the key findings of the data analysis at hand by natural language conversation. Creating these stories manually means to put a lot of effort into understanding the data and crafting visuals. With increasingly powerful generative large language models (LLMs), natural language processing as well as automating the creation of data stories is a promising field. We present a concept for a conversational data storytelling system that integrates LLMs as well as explainable AI. We present the collected requirements for our system concept and how the requirements are addressed. To show the potential of our approach, we provide a use case scenario and a discussion in this paper. This is supposed to serve as a basis for future research that will aim at investigating the technical reliability and the user experience of such a system.}}, author = {{Grimm, Valentin and Rubart, Jessica and Söhlke, Patrick}}, booktitle = {{Proceedings of the 7th Workshop on Human Factors in Hypertext (HUMAN'24)}}, editor = {{Atzenbeck, Claus and Rubart, Jessica}}, isbn = {{979-8-4007-1120-6}}, keywords = {{Data Storytelling, Conversational Assistant, Conversational Data Storytelling, Explainable AI}}, location = {{Poznan Poland}}, pages = {{6}}, publisher = {{ACM}}, title = {{{Conversational Data Stories}}}, doi = {{10.1145/3679058.3688631}}, year = {{2024}}, } @misc{12854, abstract = {{Assessing nutrient loading and processing is crucial for water quality management in lakes and reservoirs. Quantifying and reducing external nutrient inputs in these systems remains a significant challenge. The difficulty arises from low monitoring frequencies of the highly dynamic external inputs and the limited availability of measures to reduce diffuse source loading. One option for the latter is the use of pre-dams, i.e. small impoundments at the inflow points into reservoirs, designed to retain nutrients by algal uptake and sedimentation. This study analyzes long-term (ranging from 8 to 22 years) nutrient and discharge time series for nine German pre-dams to assess their retention capacity. For that, we (i) quantified nutrient loading using four different mathematical methods, (ii) derived their retention efficiencies, and (iii) identified environmental factors determining the retention of nitrogen (N), phosphorus (P), and silica (Si). We show that retention of soluble reactive phosphorus (SRP) (43.6 %) and total phosphorus (TP) (39.9 %) is far higher than for nitrate (NO3) (15.3 %) and Si (15.9 %). The retention efficiency for SRP and TP was higher during the warm seasons because of higher algal nutrient uptake and thus higher nutrient sedimentation. Mixed effects models documented a significant positive effect of the pre-dams' hydraulic residence time (HRT) on retention efficiency. Pre-dams provide substantial service in retaining nutrients and help to protect downstream waterbodies from nutrient inputs. They provide effective measures for trapping nutrients including those originating from non-point sources.}}, author = {{Fernandes, Taynara and Shatwell, Tom and Schultze, Martin and Mi, Chenxi and Determann, Maria and Rinke, Karsten}}, booktitle = {{Water research : a journal of the International Water Association}}, issn = {{1879-2448}}, keywords = {{Nutrient load calculation, Phosphorus, Nitrogen, Silica, Retention efficiency, Lakes}}, publisher = {{Elsevier BV}}, title = {{{How efficient are pre-dams as reservoir guardians? A long-term study on nutrient retention}}}, doi = {{10.1016/j.watres.2024.122864}}, volume = {{272}}, year = {{2024}}, } @misc{12855, abstract = {{Global warming is shifting the thermal dynamics of lakes, with resulting climatic variability heavily affecting their mixing dynamics. We present a dual ensemble workflow coupling climate models with lake models. We used a large set of simulations across multiple domains, multi‐scenario, and multi GCM‐ RCM combinations from CORDEX data. We forced a set of multiple hydrodynamic lake models by these multiple climate simulations to explore climate change impacts on lakes. We also quantified the contributions from the different models to the overall uncertainty. We employed this workflow to investigate the effects of climate change on Lake Sevan (Armenia). We predicted for the end of the 21st century, under RCP 8.5, a sharp increase in surface temperature and substantial bottom warming , longer stratification periods (+55 days) and disappearance of ice cover leading to a shift in mixing regime. Increased insufficient cooling during warmer winters points to the vulnerability of Lake Sevan to climate change. Our workflow leverages the strengths of multiple models at several levels of the model chain to provide a more robust projection and at the same time a better uncertainty estimate that accounts for the contributions of the different model levels to overall uncertainty. Although for specific variables, for example, summer bottom temperature, single lake models may perform better, the full ensemble provides a robust estimate of thermal dynamics that has a high transferability so that our workflow can be a blueprint for climate impact studies in other systems.}}, author = {{Shikhani, Muhammed and Feldbauer, Johannes and Ladwig, Robert and Mercado‐Bettín, Daniel and Moore, Tadhg N. and Gevorgyan, Artur and Misakyan, Amalya and Mi, Chenxi and Schultze, Martin and Boehrer, Bertram and Shatwell, Tom and Barfus, Klemens and Rinke, Karsten}}, booktitle = {{Water resources research : an AGU journal}}, issn = {{1944-7973}}, keywords = {{multi model ensemble (MME), CORDEX, LakeEnsemblR, lake modeling, climate change impacts, variance decomposition}}, number = {{11}}, publisher = {{American Geophysical Union (AGU)}}, title = {{{Combining a Multi‐Lake Model Ensemble and a Multi‐Domain CORDEX Climate Data Ensemble for Assessing Climate Change Impacts on Lake Sevan}}}, doi = {{10.1029/2023wr036511}}, volume = {{60}}, year = {{2024}}, } @misc{12858, abstract = {{To contribute to a better understanding of the dynamics of the atmosphere inside and above a forest, vertical profiles are flown with a remotely-controlled multicopter in the Steinkrug forest. This area is located over a slope in the Solling natural area in Lower Saxony (Germany), composed mostly of deciduous trees about 30 m tall. Fifteen vertical flights made near sunset between summer 2019 and spring 2020 were inspected from the surface to 100 m above ground level. These measurements provide information on the vertical structures of wind and temperature within and above the canopy, including the effects of shallow slope flows near the ground. Contrasting measurements downhill outside the forest were also made. The gathered data allow estimated profiles of the turbulent fluxes of sensible heat and momentum to be obtained by computing averages and fluctuations for layers of 5 m depth. A leaf area density profile in both leafy and leafless conditions could also be produced. The presence of a slope flow is inspected at both sites, and the applicability of existing theories is explored.}}, author = {{Wrenger, Burkhard and Cuxart, Joan}}, booktitle = {{Frontiers in Earth Science}}, issn = {{2296-6463}}, publisher = {{Frontiers Media SA}}, title = {{{Vertical profiles of temperature, wind, and turbulent fluxes across a deciduous forest over a slope observed with a UAV}}}, doi = {{10.3389/feart.2024.1159679}}, volume = {{12}}, year = {{2024}}, } @misc{12872, abstract = {{The shift towards sustainable transportation is an urgent worldwide issue, leading to the investigation of creative methods to decrease the environmental effects of traditional vehicles. Electric vehicles (EVs) are a promising alternative, but the issue lies in establishing efficient and environmentally friendly charging infrastructure. This review explores the existing research on the subject of photovoltaic-powered electric vehicle charging stations (EVCSs). Our analysis highlights the potential for economic growth and the creation of robust and decentralized energy systems by increasing the number of EVCSs. This review summarizes the current knowledge in this field and highlights the key factors driving efforts to expand the use of PV-powered EVCSs. The findings indicate that MATLAB was predominantly used for theoretical studies, with projects focusing on shading parking lots. The energy usage varied from 0.139 to 0.295 kWh/km, while the cost of energy ranged from USD 0.0032 to 0.5645 per kWh for an on-grid system. The payback period (PBP) values are suitable for this application. The average PBP was demonstrated to range from 1 to 15 years. The findings from this assessment can guide policymakers, researchers, and industry stakeholders in shaping future advancements toward a cleaner and more sustainable transportation system.}}, author = {{Almasri, Radwan A. and Alharbi, Talal and Alshitawi, M. S. and Alrumayh, Omar and Ajib, Salman}}, booktitle = {{World Electric Vehicle Journal}}, issn = {{2032-6653}}, keywords = {{electric vehicle, solar charging station, transport, photovoltaic}}, number = {{5}}, publisher = {{MDPI AG}}, title = {{{Related Work and Motivation for Electric Vehicle Solar/Wind Charging Stations: A Review}}}, doi = {{10.3390/wevj15050215}}, volume = {{15}}, year = {{2024}}, } @misc{12883, abstract = {{Die digitale Transformation in der Landwirtschaft vollzieht sich mit neuen Technologien und Verfahren. Damit verbunden sind Erwartungen an Produktivitätssteigerungen, Optimierung des Ressourceneinsatzes oder verbesserte Nachhaltigkeitseffekte. Für etablierte Techniken gibt es bereits standardisierte Prüf- und Testverfahren, deren Ergebnisse es den Landwirt*innen ermöglichen, die Technik zu bewerten. Bei digitalen Technologien oder Lösungen fehlen solche Testverfahren bisher oder sind nicht standardisiert. Deshalb wurden in einer vom Bundesministerium für Ernährung und Landwirtschaft (BMEL) eingesetzten und durch die Bundesanstalt für Landwirtschaft und Ernährung (BLE) begleiteten Arbeitsgruppe der Stand der Technik, die aktuellen Herausforderungen und mögliche Lösungsansätze diskutiert und Handlungsempfehlungen in Richtung Wirtschaft, Politik und Forschung abgeleitet. Die zugrunde gelegten Ziele waren dabei: • Verlässlichkeit und Risiken digitaler Technologien für die Landwirt*innen transparent und verständlich dar- stellen, • Transparente und verständliche Bewertung der Güte der digitalen Techniken (z.B. Angaben zum „geprüften“ Einsatzraum, Vorhersagefehler), • Bewertung der Funktionsfähigkeit, Verfügbarkeit und Anwendbarkeit, • Einschätzung, ob das Produktversprechen eingehalten wird, • Berücksichtigung von Sicherheitsaspekten bzw. Abschätzung bestehender Risiken. In Bezug auf die aktuellen digitalen Technologien wurden insbesondere hochautomatisierte Maschinen für landwirtschaftliche Prozesse sowie Entscheidungsunterstützungssysteme betrachtet. Bei Letzteren kommen zunehmend auch KI-Verfahren zum Einsatz. Für die Qualitätsbewertung solcher digitalen Technologien wurden folgende allgemeine Handlungsempfehlungen abgeleitet: • Transparente Informationsbereitstellung für den/die Landwirt*in bezüglich der Erfüllung des Produktverspre- chens und der Schnittstellen, • Freiwillige Qualitätsbewertung, außer bei gesetzlich vorgeschriebenen Prüfungen, • Neu- und Weiterentwicklung von Mess- und Prüfverfahren für Praxisbedingungen. Die nachfolgenden Kapitel bieten dazu einen detaillierteren Einblick und eine Verfeinerung der Handlungsempfehlungen zu Mess- und Prüfverfahren}}, author = {{Beneke, Frank and Gabriel, Andreas and Gabriel, Doreen and Gandorfer, Markus and Howind, Kai-Hendrik and Kalmar, Ralf and Meierhöfer, Johann and Noack, Patrick and Reckleben, Yves and Römer, Ingolf and Rubenschuh, Ulrich and Schmittmann, Oliver and Staemmler, Nikolaus and Umstätter, Christina and Weis, Martin and Wrenger, Burkhard}}, keywords = {{Produktversprechen, Standardisierung, Prüfverfahren, Testverfahren, Handlungsempfehlungen}}, pages = {{43}}, publisher = {{Thünen-Institut, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei }}, title = {{{Wege zu einer Qualitäts- bewertung digitaler und technischer Lösungen in der Landwirtschaft}}}, doi = {{10.3220/WP1725352600000}}, volume = {{246}}, year = {{2024}}, } @misc{12884, abstract = {{Der Betrieb von Unmanned Aircraft Systems (UAS) stellt neben den Anforderungen an die Flugsicherheit auch Anforderungen an die Informationssicherheit. Als fliegende Rechnerverbünde sind sie schutzbedürftig, denn korrumpierte Firmwareupdates, ein Ausfall der Kommunikationsinfrastruktur oder manipulierte Datenbanken können zu einem Fehlverhalten des Fahrzeugs führen und damit dieses zu einer Gefahr für Menschen und Umwelt werden lassen. Der Schutz von Daten und die sichere Kommunikation mit dem unternehmensinternen Netzwerk machen daher eine genauere Betrachtung in punkto Informationssicherheit erforderlich. Informationssicherheit bei UAS ist aus zwei Perspektiven zu betrachten: zum einen aus der Sicht des UAS als Teilnehmer am Luftverkehr und zum anderen aus der Sicht des mobilen Endgeräts und Datenspeichers. Grundsätzlich soll das vorliegende IT-Grundschutz-Profil den Beteiligten diese Bürde abnehmen und anhand einer Referenzarchitektur die wichtigen Fragen zur Informationssicherheit beim Betrieb von UAS klären. Insbesondere sollen folgende Fragen adressiert wer-den: Wie kann durch geeignete Maßnahmen der Informationssicherheit eine Beeinträchtigung des sicheren Flugbetriebs vermieden werden? Wie können Gefahren für ein verbundenes Netzwerk abgewendet werden? Die Aspekte im Bereich Datenschutz, wie die daten-schutzkonforme Datenerhebung für den Betrieb der Drohne und die Datenverarbeitung von Bilddaten aus der Luft, unterliegen den entsprechenden gesetzlichen Bestimmungen und sind nicht Gegenstand des IT-Grundschutzprofils. Die Gründe sich mit der Informationssicherheit beim Betrieb von UAS auseinanderzusetzen sind vielfältig. Die Wichtigsten dürften sein, Personen- und Sachschäden durch mangelhafte Informationssicherheit zu vermeiden. Dieses IT-Grundschutz-Profil ist dazu geeignet, Prozesse, die für die gebräuchliche IT-Landschaft etabliert wurden, auf den Betrieb von UAS zu übertragen. Dort, wo dies nicht möglich ist, wurden individuelle Bausteine entwickelt. Das IT-Grundschutz-Profil kann ferner als Element für eine Risikoanalyse zur Vorlage bei Luftfahrtbehörden dienen.}}, author = {{ Fehler, Jens and John, Kai Lothar and Müller-ter Jung, Marco and Rossol, Harald and Rossol, Markus and Schmitt, Corinna and Wrenger, Burkhard}}, pages = {{32}}, publisher = {{Bundesamt für Sicherheit in der Informationstechnik }}, title = {{{IT-Grundschutz-Profil für den Betrieb von UAS Band 1: UAS-Betriebskategorie „Open (Offen)“}}}, year = {{2024}}, } @misc{13049, author = {{Pilar von Pilchau, Katharina}}, location = {{Detmold}}, title = {{{Flächendeckende Bestimmung des dominierenden Abflussprozesses als Entscheidungshilfe zur Auswahl geeigneter Standorte für naturbasierte Lösungen zur Sturzflutvorsorge. Eine Analyse in ausgewählten hydrologischen Einzugsgebieten im Weserbergland}}}, year = {{2024}}, } @misc{13179, abstract = {{HUMAN 2024 is the 7th workshop of a series for the ACM Hypertext conferences. The HUMAN workshop has a strong focus on the user and thus is complementary to the strong machine analytics research direction that could be experienced in previous conferences. The user-centric view on hypertext not only includes user interfaces and interaction, but also discussions about hypertext application domains as well as human-centered AI. Furthermore, the workshop raises the question of how original hypertext ideas (e.g., Doug Engelbart’s “augmenting human intellect” [6] or Jeff Conklin’s “hypertext as a computer-based medium for thinking and communication” [5]) can improve today’s hypertext systems.}}, author = {{Atzenbeck, Claus and Rubart, Jessica}}, booktitle = {{HT '24: Proceedings of the 35th ACM Conference on Hypertext and Social Media}}, isbn = {{979-8-4007-0595-3}}, location = {{Poznan Poland}}, pages = {{384--385}}, publisher = {{ACM}}, title = {{{Human Factors in Hypertext (HUMAN'24)}}}, doi = {{10.1145/3648188.3675117}}, year = {{2024}}, } @misc{13182, author = {{Rubart, Jessica}}, booktitle = {{hlbNRW-Informationsbrief}}, number = {{22}}, pages = {{2}}, publisher = {{Hochschullehrerbund – Landesverband Nordrhein-Westfalen e. V.}}, title = {{{Erfahrungsbericht zum Promotionskolleg NRW}}}, year = {{2024}}, } @misc{12214, abstract = {{A precise understanding of the mechanisms causing phytoplankton blooms in reservoirs is still lacking, especially in large riverine reservoirs. To better understand these blooms, the role of the complex hydrodynamics caused by dam operation must be quantified. Here we examine how synergistic hydrodynamic processes, rather than individual metrics, trigger blooms in Xiangxi Bay, a typical tributary bay of the Three Gorges Reservoir, China. We used a 3D ecological-hydrodynamic model, which integrated hydrodynamics with the abiotic factors that limit phytoplankton growth to simulate one whole year (2010). By implementing a scaling criterion, we quantified the contribution of local phytoplankton growth and hydrodynamic processes, including advection transport and vertical mixing, on bloom dynamics. Results indicated vertical mixing was the main process inhibiting blooms in colder months (from October to February) but horizontal advection, which flushed and diluted blooms, was dominant in warmer months (from May to July) when stratification was intense and nutrients were replete. Accordingly, blooms occurred when both vertical mixing and horizontal advection were low. We suggested a potential dam operation strategy to mitigate blooms during stratification, which involves withdrawing the warm surface water from upstream reservoirs to increase horizontal flows in the surface layer. Extending the application of critical turbulence model, our study shows how vertical mixing and horizontal advection rate interact with phytoplankton growth rate to drive blooms in highly dynamic riverine systems.}}, author = {{Gai, Bo and Sun, Jian and Lin, Binliang and Li, Yuanyi and Mi, Chenxi and Shatwell, Tom}}, booktitle = {{Journal of Hydrology}}, issn = {{1879-2707}}, keywords = {{Phytoplankton bloom dynamics, Vertical mixing, Advection transport, Three-dimensional ecological-hydrodynamic model, Three Gorges Reservoir, Dam operation}}, number = {{B}}, publisher = {{Elsevier BV}}, title = {{{Vertical mixing and horizontal transport unravel phytoplankton blooms in a large riverine reservoir}}}, doi = {{10.1016/j.jhydrol.2023.130430}}, volume = {{627}}, year = {{2023}}, } @misc{12218, abstract = {{Artificial light at night significantly alters the predictability of the natural light cycles that most animals use as an essential Zeitgeber for daily activity. Direct light has well-documented local impacts on activity patterns of diurnal and nocturnal organisms. However, artificial light at night also contributes to an indirect illumination of the night sky, called skyglow, which is rapidly increasing. The consequences of this wide-spread form of artificial night light on the behaviour of animals remain poorly understood, with only a few studies performed under controlled (laboratory) conditions. Using animal-borne activity loggers, we investigated daily and seasonal flight activity of a free-living crepuscular bird species in response to nocturnal light conditions at sites differing dramatically in exposure to skyglow. We find that flight activity of European Nightjars (Caprimulgus europaeus) during moonless periods of the night is four times higher in Belgium (high skyglow exposure) than in sub-tropical Africa and two times higher than in Mongolia (near-pristine skies). Moreover, clouds darken the sky under natural conditions, but skyglow can strongly increase local sky brightness on overcast nights. As a result, we find that nightjars' response to cloud cover is reversed between Belgium and sub-tropical Africa and between Belgium and Mongolia. This supports the hypothesis that cloudy nights reduce individual flight activity in a pristine environment, but increase it when the sky is artificially lit. Our study shows that in the absence of direct light pollution, anthropogenic changes in sky brightness relieve nightjars from visual constraints on being active. Individuals adapt daily activities to artificial night-sky brightness, allowing them more time to fly than conspecifics living under natural light cycles. This modification of the nocturnal timescape likely affects behavioural processes of most crepuscular and nocturnal species, but its implications for population dynamics and interspecific interactions remain to be investigated.}}, author = {{Evens, Ruben and Lathouwers, Michiel and Pradervand, Jean-Nicolas and Jechow, Andreas and Kyba, Christopher Conrad Maximillian and Shatwell, Tom and Jacot, Alain and Ulenaers, Eddy and Kempenaers, Bart and Eens, Marcel}}, booktitle = {{The science of the total environment : an international journal for scientific research into the environment and its relationship with man}}, issn = {{1879-1026}}, keywords = {{Nightjar, Activity-logging, Artificial light, Time-niche, Anthropocene}}, publisher = {{Elsevier BV}}, title = {{{Skyglow relieves a crepuscular bird from visual constraints on being active}}}, doi = {{10.1016/j.scitotenv.2023.165760}}, volume = {{900}}, year = {{2023}}, } @misc{12219, abstract = {{Artificial light at night (ALAN) affects many areas of the world and is increasing globally. To date, there has been limited and inconsistent evidence regarding the consequences of ALAN for plant communities, as well as for the fitness of their constituent species. ALAN could be beneficial for plants as they need light as energy source, but they also need darkness for regeneration and growth. We created model communities composed of 16 plant species sown, exposed to a gradient of ALAN ranging from ‘moonlight only’ to conditions like situations typically found directly underneath a streetlamp. We measured plant community composition and its production (biomass), as well as functional traits of three plant species from different functional groups (grasses, herbs, legumes) in two separate harvests. We found that biomass was reduced by 33% in the highest ALAN treatment compared to the control, Shannon diversity decreased by 43% and evenness by 34% in the first harvest. Some species failed to establish in the second harvest. Specific leaf area, leaf dry matter content and leaf hairiness responded to ALAN. These responses suggest that plant communities will be sensitive to increasing ALAN, and they flag a need for plant conservation activities that consider impending ALAN scenarios.}}, author = {{Bucher, Solveig Franziska and Uhde, Lia and Weigelt, Alexandra and Cesarz, Simone and Eisenhauer, Nico and Gebler, Alban and Kyba, Christopher and Römermann, Christine and Shatwell, Tom and Hines, Jes}}, booktitle = {{Philosophical Transactions of the Royal Society B: Biological Sciences}}, issn = {{1471-2970}}, number = {{1892}}, publisher = {{The Royal Society}}, title = {{{Artificial light at night decreases plant diversity and performance in experimental grassland communities}}}, doi = {{10.1098/rstb.2022.0358}}, volume = {{378}}, year = {{2023}}, } @misc{12220, abstract = {{Artificial light at night (ALAN) is predicted to have far-reaching consequences for natural ecosystems given its influence on organismal physiology and behaviour, species interactions and community composition. Movement and predation are fundamental ecological processes that are of critical importance to ecosystem functioning. The natural movements and foraging behaviours of nocturnal invertebrates may be particularly sensitive to the presence of ALAN. However, we still lack evidence of how these processes respond to ALAN within a community context. We assembled insect communities to quantify their movement activity and predation rates during simulated Moon cycles across a gradient of diffuse night-time illuminance including the full range of observed skyglow intensities. Using radio frequency identification, we tracked the movements of insects within a fragmented grassland Ecotron experiment. We additionally quantified predation rates using prey dummies. Our results reveal that even low-intensity skyglow causes a temporal shift in movement activity from day to night, and a spatial shift towards open habitats at night. Changes in movement activity are associated with indirect shifts in predation rates. Spatio-temporal shifts in movement and predation have important implications for ecological networks and ecosystem functioning, highlighting the disruptive potential of ALAN for global biodiversity and the provision of ecosystem services.}}, author = {{Dyer, Alexander and Ryser, Remo and Brose, Ulrich and Amyntas, Angelos and Bodnar, Nora and Boy, Thomas and Franziska Bucher, Solveig and Cesarz, Simone and Eisenhauer, Nico and Gebler, Alban and Hines, Jes and Kyba, Christopher C. M. and Menz, Myles H. M. and Rackwitz, Karl and Shatwell, Tom and Terlau, Jördis F. and Hirt, Myriam R.}}, booktitle = {{Philosophical Transactions of the Royal Society B: Biological Sciences}}, issn = {{1471-2970}}, number = {{1892}}, publisher = {{The Royal Society}}, title = {{{Insect communities under skyglow: diffuse night-time illuminance induces spatio-temporal shifts in movement and predation}}}, doi = {{10.1098/rstb.2022.0359}}, volume = {{378}}, year = {{2023}}, } @misc{10130, abstract = {{In dieser Arbeit wurde untersucht, wie sich die Verwendung eines Nanogold-Kieselgel-Katalysators auf den Verlauf einer enzymatischen Gärreaktion auswirkt. Diese Untersuchungen basieren auf einer vorherigen Arbeit, in der nur der Beginn der Gärung betrachtet wurde [1]. Bei einer enzymatischen Gärung, wird aus Glucose, unter Verwendung von Adenosindiphosphat Ethanol, Kohlenstoffdioxid und das energiereichere Adenosintriphosphat gebildet (Formel 1) [2]. Als Versuchsmedium wurde der Fruchtsaft Apfelsaft gewählt. Bei den Untersuchungen wurde insbesondere auf die Fortsetzung der Reaktion nach Bildung der ersten Gasblase geachtet, da die Frage, ob es sich hierbei um ein einmaliges Ereignis handelt aufgekommen ist. Um dies zu untersuchen, wurden Versuche mit drei Messreihen durchgeführt. Diese werden im Folgenden als Messreihen „Hefe“, „Hefe und Katalysator“ und „Katalysator“ bezeichnet. Die einzelnen Versuche decken unterschiedliche Versuchszeiträume und ab.}}, author = {{Fahrenkrug, Katrin}}, publisher = {{Technischen Hochschule Ostwestfahlen-Lippe}}, title = {{{Untersuchung zur katalytischen Beschleunigung bei der Ethanolbildung in natürlichen Fruchtsäften : Präsentation der Bachelorarbeit von Katrin Fahrenkrug unter Betreuung von Herrn Prof. Dr. Manfred Sietz}}}, year = {{2023}}, } @misc{10309, author = {{Grimm, Valentin and Rubart, Jessica and Faller, Gudrun and Geiger, Laura}}, booktitle = {{Mensch und Computer 2023 – Workshopband, MCI-WS02: Partizipative und sozialverantwortliche Technikentwicklung}}, editor = {{Fröhlich, Peter and Cobus, Vanessa}}, location = {{Rapperswil, Schweiz}}, publisher = {{Gesellschaft für Informatik e.V.}}, title = {{{Partizipativer Entwicklungsprozess einer Trainingsplattform für Haushaltshilfen}}}, doi = {{10.18420/muc2023-mci-ws02-258}}, year = {{2023}}, } @misc{10311, author = {{Grimm, Valentin and Rubart, Jessica}}, booktitle = {{Mensch und Computer 2023 – Workshopband, MCI-WS08 6th International Workshop Gam-R – Gamification Reloaded}}, editor = {{Fröhlich, Peter and Cobus, Vanessa}}, location = {{Rapperswil, Schweiz}}, publisher = {{Gesellschaft für Informatik e.V.}}, title = {{{Unlocking E-learning and XAI Concepts with Free Limited Choice}}}, doi = {{10.18420/muc2023-mci-ws08-354}}, year = {{2023}}, } @misc{10312, author = {{Potthast, Jonas and Grimm, Valentin and Rubart, Jessica}}, booktitle = {{Mensch und Computer 2023 – Workshopband, MCI-WS16 - UCAI 2023: Workshop on User-Centered Artificial Intelligence}}, editor = {{Fröhlich, Peter and Cobus, Vanessa}}, location = {{Rapperswil, Schweiz}}, publisher = {{Gesellschaft für Informatik e.V.}}, title = {{{Immersive Exploration of Machine Learning Data Combining Visual Analytics with Explainable AI}}}, doi = {{10.18420/muc2023-mci-ws16-389}}, year = {{2023}}, } @proceedings{10628, editor = {{Rubart, Jessica and Atzenbeck, Claus}}, isbn = {{979-8-4007-0239-6}}, location = {{Rome (and online)}}, publisher = {{Association for Computing Machinery (ACM)}}, title = {{{Proceedings of the 6th international Workshop on Human Factors in Hypertext (HUMAN’23)}}}, doi = {{10.1145/3603607}}, year = {{2023}}, } @misc{10784, abstract = {{Replacing carbon-based fuels with hydrogen will not sustainably prevent an ice cube from melting, as CO2 is just one of the (many) causes of human-caused climate change. From an energetic and climatic point of view, it does not matter whether the heat input into the atmosphere occurs through the combustion of fossil carbon or through the combustion of hydrogen (which is difficult to produce): The desired decarbonization alone cannot slow the speed of climate change in our time. Whether global primary energy consumption is based on carbon or hydrogen remains irrelevant to the lifetime of the heat-storing CO2 molecules in atmosphere. Several literature sources on the lifetime of CO2 in the atmosphere vary between a few decades and 1000 years. It is possible that the differences in lifetime are due to the fact that different system boundaries are taken into account. The start of slowing climate change the day after CO2 is no longer released into the atmosphere will certainly only have noticeable consequences several generations later. From today's perspective, the hydrogen-based energy economy cannot be an equivalent replacement for a carbon-based energy economy, but rather only an intermediate step on the way to greater energy efficiency. Energy efficiency means that the ratio between the effort for “energy production” (actually energy conversion) and the benefit as “energy use” (proportion of energy that can be converted into work) must decrease significantly. How? For example, by developing more energy-efficient processes and machines, improving heat storage, using CO2-free renewable energies and using waste heat as much as possible. Sustainability is nothing more than common sense and concerning the use of energy it means daring to be more energetically truthful through greater energy efficiency. }}, author = {{Sietz, Manfred}}, keywords = {{Grüner Wasserstoff, Decarbonisierung, Klimawandel, Meeresspiegelerhöhung, Nachhaltigkeit, green hydrogen, decarbonization, climate change, sea level rise, sustainability}}, pages = {{8}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe}}, title = {{{Von grünem Wasserstoff und farblosem CO2}}}, year = {{2023}}, } @misc{10789, abstract = {{Explainable AI (XAI) provides approaches and techniques for building trust in AI models. This paper presents and explores XAI approaches focusing on user interface concepts in predictive maintenance. The underlying AI model is based on an open dataset for wind turbines. An enhanced multi-class self-conceived labeling strategy improves the model and, thus, supports the XAI approaches. Previous research in user-centered XAI shows that users do not exploit the possibilities of XAI methods and instead rely on their intuition. To counter this tendency, we present user interfaces incorporating gamification elements to enhance understanding of AI outputs. We highlight our approach via two examples, demonstrating a local and a global XAI technique respectively. A preliminary user study was conducted to assess the value added by these gamification aspects. While the findings were inconclusive, they provided an initial insight into the potential of these design elements to foster user engagement in the realm of XAI.}}, author = {{Grimm, Valentin and Potthast, Jonas and Rubart, Jessica}}, booktitle = {{2023 IEEE 21st International Conference on Industrial Informatics (INDIN)}}, keywords = {{XAI, Industrial Analytics, Motivational Exploration, SHAP}}, location = {{Lemgo}}, pages = {{1--6}}, publisher = {{IEEE}}, title = {{{Motivational Exploration of Explanations in Industrial Analytics}}}, doi = {{10.1109/INDIN51400.2023.10217864}}, year = {{2023}}, } @misc{12994, abstract = {{HUMAN 2023 is the 6th workshop of a series for the ACM Hypertext conferences. The HUMAN workshop has a strong focus on the user and thus is complementary to the strong machine analytics research direction that could be experienced in previous conferences.The user-centric view on hypertext not only includes user interfaces and interaction, but also discussions about hypertext application domains as well as human-centered AI. Furthermore, the workshop raises the question of how original hypertext ideas (e. g., Doug Engelbart’s "augmenting human intellect" [7] or Jeff Conklin’s "hypertext as a computer-based medium for thinking and communication" [6]) can improve today’s hypertext systems.}}, author = {{Rubart, Jessica and Atzenbeck, Claus}}, booktitle = {{Proceedings of the 34th ACM Conference on Hypertext and Social Media}}, isbn = {{979-8-4007-0232-7}}, keywords = {{user interfaces, information structuring, decision making, human-centered AI, cognitive aspects, scientific community, digital humanities, user interaction, human factors, user-centric, annotation, adaptive hypertext, hypermedia, collaboration, information systems, augmentation, hypertext, communication, intercultural aspects}}, location = {{Rome, Italy}}, publisher = {{ACM}}, title = {{{HUMAN’23: 6th Workshop on Human Factors in Hypertext}}}, doi = {{10.1145/3603163.3610576}}, year = {{2023}}, } @misc{11758, abstract = {{This demo features a prototype of a software tool to guide developers through the process of gamification design. It shall improve gameful designs, especially in the scientific community, and make the process of gamification design more accessible for non-experts in the field. The main goal of this first version is to gain user feedback on its usefulness with respect to intuition of use, its documentation capabilities and collaboration.}}, author = {{Grimm, Valentin}}, booktitle = {{Proceedings of Mensch und Computer 2022 }}, editor = {{Mühlhäuser, Max }}, location = {{Darmstadt}}, pages = {{605--607}}, publisher = {{ACM}}, title = {{{A Gamification Design Tool to Improve Design Quality}}}, doi = {{10.1145/3543758.3547510}}, year = {{2022}}, } @misc{12217, abstract = {{In this study dedicated to Winfried Lampert, we present a suite of case studies which successfully combined empirical long-term and experimental data with theory to identify mechanisms driving the non-linear dynamics and critical transitions in a lake ecosystem under environmental change. The theoretical concepts used include Probability Theory, Regime Shift Theory, Intraguild Predation Theory, Metabolic Theory of Ecology, and Early Warning Indicators. Only by linking theory with data do we gain a mechanistic understanding of the dynamics and long-term changes observed in the case study sites – allowing for realistic projections under different climate change scenarios. If this combined approach correctly identifies the mechanisms governing change in case studies, then upscaling beyond the case study at hand is likely feasible. Indeed, for most of the presented case studies, identified mechanisms were confirmed by explicitly linking them to relevant recent studies based on large-scale global data sets. These include the rise in lake ice intermittency, shifts in thermal regime and the amplification of lake’s trophic state in a warmer world. This link also documents the importance and value of re-using long-term records under the FAIR data principles in international initiatives. Further, in the context of linking theory and data, large-scale data has the unique ability to test the general validity of a theory, thus giving valuable feedback to theory. }}, author = {{Adrian, Rita and Gsell, Alena S. and Shatwell, Tom and Scharfenberger, Ulrike}}, booktitle = {{Fundamental and applied limnology : formerly: Archiv für Hydrobiologie }}, issn = {{2363-7110}}, keywords = {{Theory, experimental data, scaling, long-term monitoring, theory-data synergy}}, number = {{3/4}}, pages = {{179 -- 194}}, publisher = {{Schweizerbart}}, title = {{{Linking theory with empirical data: Improving prediction through mechanistic understanding of lake ecosystem complexity under global change}}}, doi = {{10.1127/fal/2022/1457}}, volume = {{196}}, year = {{2022}}, } @misc{12221, abstract = {{Lake evaporation plays an important role in the water budget of lakes. Predicting lake evaporation responses to climate change is thus of paramount importance for the planning of mitigation and adaption strategies. However, most studies that have simulated climate change impacts on lake evaporation have typically utilised a single mechanistic model. Whilst such studies have merit, projected changes in lake evaporation from any single lake model can be considered uncertain. To better understand evaporation responses to climate change, a multi-model approach (i.e., where a range of projections are considered), is desirable. In this study, we present such multi-model analysis, where five lake models forced by four different climate model projections are used to simulate historic and future change (1901–2099) in lake evaporation. Our investigation, which focuses on sub-tropical Lake Kinneret (Israel), suggested considerable differences in simulated evaporation rates among the models, with the annual average evaporation rates varying between 1232 mm year−1 and 2608 mm year−1 during the historic period (1901–2005). We explored these differences by comparing the models with reference evaporation rates estimated using in-situ data (2000–2005) and a bulk aerodynamic algorithm. We found that the model ensemble generally captured the intra-annual variability in reference evaporation rates, and compared well at seasonal timescales (RMSEc = 0.19, R = 0.92). Using the model ensemble, we then projected future change in evaporation rates under three different Representative Concentration Pathway (RCP) scenarios: RCP 2.6, 6.0 and 8.5. Our projections indicated that, by the end of the 21st century (2070–2099), annual average evaporation rates would increase in Lake Kinneret by 9–22 % under RCPs 2.6–8.5. When compared with projected regional declines in precipitation, our projections suggested that the water balance of Lake Kinneret could experience a deficit of 14–40 % this century. We anticipate this substantial projected deficit combined with a considerable growth in population expected for this region could have considerable negative impacts on water availability and would consequently increase regional water stress.}}, author = {{La Fuente, Sofia and Jennings, Eleanor and Gal, Gideon and Kirillin, Georgiy and Shatwell, Tom and Ladwig, Robert and Moore, Tadhg and Couture, Raoul-Marie and Côté, Marianne and Love Råman Vinnå, C. and Iestyn Woolway, R.}}, booktitle = {{Journal of Hydrology}}, issn = {{1879-2707}}, keywords = {{Ensemble modelling, Lake evaporation, Climate change, Lake Kinneret}}, publisher = {{Elsevier BV}}, title = {{{Multi-model projections of future evaporation in a sub-tropical lake}}}, doi = {{10.1016/j.jhydrol.2022.128729}}, volume = {{615}}, year = {{2022}}, } @misc{12222, abstract = {{Background Aggregations of cyanobacteria in lakes and reservoirs are commonly associated with surface blooms, but may also occur in the metalimnion as subsurface or deep chlorophyll maxima. Metalimnetic cyanobacteria blooms are of great concern when potentially toxic species, such as Planktothrix rubescens, are involved. Metalimnetic blooms of P. rubescens have apparently increased in frequency and severity in recent years, so there is a strong need to identify reservoir management options to control it. We hypothesized that P. rubescens blooms in reservoirs can be suppressed using selective withdrawal to maximize its export from the reservoir. We also expect that altering the light climate can affect the dynamics of this species. We tested our hypothesis in Rappbode Reservoir (the largest drinking water reservoir in Germany) by establishing a series of withdrawal and light scenarios based on a calibrated water quality model (CE-QUAL-W2). Results The novel withdrawal strategy, in which water is withdrawn from a certain depth below the surface within the metalimnion instead of at a fixed elevation relative to the dam wall, significantly reduced P. rubescens biomass in the reservoir. According to the simulation results, we defined an optimal withdrawal volume to control P. rubescens blooms in the reservoir as approximately 10 million m3 (10% of the reservoir volume) during its bloom phase. The results also illustrated that P. rubescens growth can be most effectively suppressed if the metalimnetic withdrawal is applied in the early stage of its rapid growth, i.e., before the bloom occurs. In addition, our study showed that P. rubescens biomass gradually decreased with increasing light extinction and nearly disappeared when the extinction coefficient exceeded 0.55 m−1. Conclusions Our study indicates the rise in P. rubescens biomass can be effectively offset by selective withdrawal as well as by reducing light intensity beneath the water surface. Considering the widespread occurrence of P. rubescens in stratified lakes and reservoirs worldwide, we believe the results will be helpful for scientists and managers working on other water bodies to minimize the negative impacts of this harmful cyanobacteria. Our model may serve as a transferable tool to explore local dynamics in other standing waters.}}, author = {{Mi, Chenxi and Hamilton, David P. and Frassl, Marieke A. and Shatwell, Tom and Kong, Xiangzhen and Boehrer, Bertram and Li, Yiping and Donner, Jan and Rinke, Karsten}}, booktitle = {{Environmental Sciences Europe}}, issn = {{2190-4715}}, number = {{1}}, publisher = {{Springer }}, title = {{{Controlling blooms of Planktothrix rubescens by optimized metalimnetic water withdrawal: a modelling study on adaptive reservoir operation}}}, doi = {{10.1186/s12302-022-00683-3}}, volume = {{34}}, year = {{2022}}, } @misc{12223, abstract = {{Deforestation is currently a widespread phenomenon and a growing environmental concern in the era of rapid climate change. In temperate regions, it is challenging to quantify the impacts of deforestation on the catchment dynamics and downstream aquatic ecosystems such as reservoirs and disentangle these from direct climate change impacts, let alone project future changes to inform management. Here, we tackled this issue by investigating a unique catchment-reservoir system with two reservoirs in distinct trophic states (meso‑ and eutrophic), both of which drain into the largest drinking water reservoir in Germany. Due to the prolonged droughts in 2015–2018, the catchment of the mesotrophic reservoir lost an unprecedented area of forest (exponential increase since 2015 and ca. 17.1% loss in 2020 alone). We coupled catchment nutrient exports (HYPE) and reservoir ecosystem dynamics (GOTM-WET) models using a process-based modeling approach. The coupled model was validated with datasets spanning periods of rapid deforestation, which makes our future projections highly robust. Results show that in a short-term time scale (by 2035), increasing nutrient flux from the catchment due to vast deforestation (80% loss) can turn the mesotrophic reservoir into a eutrophic state as its counterpart. Our results emphasize the more prominent impacts of deforestation than the direct impact of climate warming in impairment of water quality and ecological services to downstream aquatic ecosystems. Therefore, we propose to evaluate the impact of climate change on temperate reservoirs by incorporating a time scale-dependent context, highlighting the indirect impact of deforestation in the short-term scale. In the long-term scale (e.g. to 2100), a guiding hypothesis for future research may be that indirect effects (e.g., as mediated by catchment dynamics) are as important as the direct effects of climate warming on aquatic ecosystems.}}, author = {{Kong, Xiangzhen and Ghaffar, Salman and Determann, Maria and Friese, Kurt and Jomaa, Seifeddine and Mi, Chenxi and Shatwell, Tom and Rinke, Karsten and Rode, Michael}}, booktitle = {{Water research : a journal of the International Water Association}}, issn = {{1879-2448}}, keywords = {{Deforestation, Climate change, Temperate regions, Reservoir, Eutrophication, Process-based modeling}}, number = {{8}}, publisher = {{Elsevier BV}}, title = {{{Reservoir water quality deterioration due to deforestation emphasizes the indirect effects of global change}}}, doi = {{10.1016/j.watres.2022.118721}}, volume = {{221}}, year = {{2022}}, } @misc{12224, abstract = {{Empirical evidence demonstrates that lakes and reservoirs are warming across the globe. Consequently, there is an increased need to project future changes in lake thermal structure and resulting changes in lake biogeochemistry in order to plan for the likely impacts. Previous studies of the impacts of climate change on lakes have often relied on a single model forced with limited scenario-driven projections of future climate for a relatively small number of lakes. As a result, our understanding of the effects of climate change on lakes is fragmentary, based on scattered studies using different data sources and modelling protocols, and mainly focused on individual lakes or lake regions. This has precluded identification of the main impacts of climate change on lakes at global and regional scales and has likely contributed to the lack of lake water quality considerations in policy-relevant documents, such as the Assessment Reports of the Intergovernmental Panel on Climate Change (IPCC). Here, we describe a simulation protocol developed by the Lake Sector of the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP) for simulating climate change impacts on lakes using an ensemble of lake models and climate change scenarios for ISIMIP phases 2 and 3. The protocol prescribes lake simulations driven by climate forcing from gridded observations and different Earth system models under various representative greenhouse gas concentration pathways (RCPs), all consistently bias-corrected on a 0.5∘ × 0.5∘ global grid. In ISIMIP phase 2, 11 lake models were forced with these data to project the thermal structure of 62 well-studied lakes where data were available for calibration under historical conditions, and using uncalibrated models for 17 500 lakes defined for all global grid cells containing lakes. In ISIMIP phase 3, this approach was expanded to consider more lakes, more models, and more processes. The ISIMIP Lake Sector is the largest international effort to project future water temperature, thermal structure, and ice phenology of lakes at local and global scales and paves the way for future simulations of the impacts of climate change on water quality and biogeochemistry in lakes.}}, author = {{Golub, Malgorzata and Thiery, Wim and Marcé, Rafael and Pierson, Don and Vanderkelen, Inne and Mercado-Bettin, Daniel and Woolway, R. Iestyn and Grant, Luke and Jennings, Eleanor and Kraemer, Benjamin M. and Schewe, Jacob and Zhao, Fang and Frieler, Katja and Mengel, Matthias and Bogomolov, Vasiliy Y. and Bouffard, Damien and Côté, Marianne and Couture, Raoul-Marie and Debolskiy, Andrey V. and Droppers, Bram and Gal, Gideon and Guo, Mingyang and Janssen, Annette B. G. and Kirillin, Georgiy and Ladwig, Robert and Magee, Madeline and Moore, Tadhg and Perroud, Marjorie and Piccolroaz, Sebastiano and Raaman Vinnaa, Love and Schmid, Martin and Shatwell, Tom and Stepanenko, Victor M. and Tan, Zeli and Woodward, Bronwyn and Yao, Huaxia and Adrian, Rita and Allan, Mathew and Anneville, Orlane and Arvola, Lauri and Atkins, Karen and Boegman, Leon and Carey, Cayelan and Christianson, Kyle and de Eyto, Elvira and DeGasperi, Curtis and Grechushnikova, Maria and Hejzlar, Josef and Joehnk, Klaus and Jones, Ian D. and Laas, Alo and Mackay, Eleanor B. and Mammarella, Ivan and Markensten, Hampus and McBride, Chris and Özkundakci, Deniz and Potes, Miguel and Rinke, Karsten and Robertson, Dale and Rusak, James A. and Salgado, Rui and van der Linden​​​​​​​, Leon and Verburg, Piet and Wain, Danielle and Ward, Nicole K. and Wollrab, Sabine and Zdorovennova, Galina}}, booktitle = {{Geoscientific model development : GMD ; an interactive open access journal of the European Geosciences Union}}, issn = {{1991-9603}}, number = {{11}}, pages = {{4597--4623}}, publisher = {{Copernicus Publ. }}, title = {{{A framework for ensemble modelling of climate change impacts on lakes worldwide: the ISIMIP Lake Sector}}}, doi = {{10.5194/gmd-15-4597-2022}}, volume = {{15}}, year = {{2022}}, } @misc{8346, author = {{Sietz, Manfred and Siemens, Yvonne}}, keywords = {{catalyst, sugar, alcoholic fermentation, bioethanole, nanogold}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe}}, title = {{{Katalytische Beschleunigung der alkoholischen Gärung durch kristalline Oxidationskatalysatoren auf Basis von Nanogold/ Kieselgel}}}, doi = {{https://doi.org/10.25644/n873-rm33}}, year = {{2022}}, } @misc{9159, abstract = {{Beschäftigte in haushaltsnahen Dienstleistungen wurden bislang gesellschaftlich wenig beachtet und wissenschaftlich kaum untersucht. Der Beitrag zeigt, weshalb und wie im Rahmen eines Forschungsprojektes der Fokus auf diese Gruppe gelegt wird, von welchen Rahmenbedingungen die Beschäftigung in haushaltsnahen Dienstleistungen gekennzeichnet ist und welche Erkenntnisse im Projekt bereits zu Arbeitsbedingungen, Belastungen und Ressourcen der Beschäftigten gewonnen werden konnten.}}, author = {{Geiger, Laura and Faller, Gudrun and Grimm, Valentin and Rubart, Jessica and Weber, Martin and Vennebusch, Thorsten}}, booktitle = {{ Betriebliche Prävention : Arbeit, Gesundheit, Unfallversicherung}}, issn = {{2365-7634}}, number = {{9}}, pages = {{376--379}}, publisher = {{Erich Schmidt Verlag}}, title = {{{Gekonnt handeln – Prävention für Beschäftigte in haushaltsnahen Dienstleistungen}}}, doi = {{https://doi.org/10.37307/j.2365-7634.2022.09.08}}, volume = {{134}}, year = {{2022}}, } @misc{9161, abstract = {{Employees in household-related services have so far been neglected in research and practice. The overall goal of our project is to identify work-related stress of this special target group, develop recommendations, and disseminate them using low-threshold, attractive edutainment offers. In this context, this contribution presents a learning platform design for the special target group of domestic workers, such as gardeners or cleaners. The design is based on a requirements analysis with respect to this special target group, which we as well outline in this contribution.}}, author = {{Grimm, Valentin and Geiger, Laura and Rubart, Jessica and Faller, Gudrun}}, booktitle = {{DELFI 2022 : die 20. Fachtagung Bildungstechnologien der Gesellschaft für Informatik e.V., 12.-14. September 2022, Karlsruhe}}, editor = {{Henning, Peter A. and Striewe, Michael and Wölfel, Matthias}}, isbn = {{978-3-88579-716-6}}, issn = {{1617-5468}}, keywords = {{E-Learning, Minority Group, Gameful Design, Gamification}}, location = {{Karlsruhe, DE}}, pages = {{213--214}}, publisher = {{Gesellschaft für Informatik e.V.}}, title = {{{Requirements and Design of a Training System for Domestic Workers}}}, doi = {{10.18420/delfi2022-037}}, volume = {{P-322}}, year = {{2022}}, } @misc{9162, abstract = {{The German manufacturing industry has been carrying out new developments towards the next industrial revolution, focusing on smart manufacturing environments. Our work emphasizes human-centered control rooms in the context of production plants. Increased automation does not have to come with less human control. Therefore, we report on multimodal collaborative interaction techniques to augment industrial control rooms. In particular, we include mobile workers who use the control room while being in the production hall using tablets or specifically mixed reality glasses. Collaborative annotation dashboards support discussions and a shared understanding among analysts. Manufacturing-related data can be integrated into business analytics environments so that holistic analyses can be performed. Multimodal interaction techniques can support effective interaction with the control room based on the users’ preferences. Immersive experience through mixed reality-based three-dimensional visualizations and interaction possibilities support users in obtaining a clear understanding of the underlying data.}}, author = {{Rubart, Jessica and Grimm, Valentin and Potthast, Jonas}}, booktitle = {{Journal Future Internet}}, issn = {{1999-5903 }}, keywords = {{control room, multimodel interaction, augmented reality, mixed reality}}, number = {{8}}, pages = {{1--18}}, publisher = {{MDPI}}, title = {{{Augmenting Industrial Control Rooms with Multimodal Collaborative Interaction Techniques}}}, doi = {{https://doi.org/10.3390/fi14080224}}, volume = {{14}}, year = {{2022}}, } @misc{9163, author = {{Potthast, Jonas and Grimm, Valentin and Rubart, Jessica}}, booktitle = {{Proceedings of Mensch und Computer 2022}}, editor = {{Mühlhäuser, Max}}, location = {{Darmstadt, DE}}, pages = {{594 -- 596}}, publisher = {{ACM Press}}, title = {{{Immersive Experience of Multidimensional Data using Mixed Reality based Scatterplots}}}, doi = {{https://doi.org/10.1145/3543758.3547515}}, year = {{2022}}, } @proceedings{9170, abstract = {{Human Factors in Hypertext 2022 (HUMAN'22) is the 5th workshop in this series. It is sponsored by ACM SIGWEB and is associated to the ACM Conference on Hypertext and Social Media 2022 (HT'22), which takes place between June 28th and July 1st in Barcelona, Spain as a hybrid event. HUMAN'22 takes place on June 28th---the conference's workshop day. After two years of pandemic-caused virtual workshops, HUMAN'22 is organized as a hybrid event, which is in line with the organization of the main conference. We see this as a chance to allow in-presence meetings while providing remote participants the opportunity to get in touch by low registration costs and a reduced carbon footprint. Today's digital media enables us to communicate over distance or even attend larger meetings online and the Corona pandemic has taught us to use these tools in our daily life. This puts a special focus on the role of hypertext in our communication and information exchange demands, in particular from a human's perspective.}}, editor = {{Atzenbeck, Claus and Rubart, Jessica}}, isbn = {{978-1-4503-9401-7}}, location = {{Barcelona (hybrid)}}, publisher = {{ACM Press}}, title = {{{Proceedings of the 5th international Workshop on Human Factors in Hypertext (HUMAN’22)}}}, doi = {{10.1145/3538882}}, year = {{2022}}, } @inbook{9463, author = {{Ajib, Salman}}, booktitle = {{Natur und Landschaft sind... ja was? Und überhaupt: wozu?}}, editor = {{Riedl, Ulrich}}, pages = {{11--13}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe. Sustainable Campus Höxter}}, title = {{{Natur, Landschaft und Menschheit - eine Gedankenreise in Bildern aus dem Vorderen Orient}}}, year = {{2022}}, } @inbook{9470, author = {{Fettig, Joachim}}, booktitle = {{Natur und Landschaft sind... ja was? Und überhaupt: wozu?}}, editor = {{Riedl, Ulrich}}, pages = {{44--46}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe. Sustainable Campus Höxter}}, title = {{{Natur und Landschaft in Mittelnorwegen}}}, year = {{2022}}, } @inbook{9471, author = {{Gabriel, Maria Alejandra and Rubart, Jessica}}, booktitle = {{Natur und Landschaft sind... ja was? Und überhaupt: wozu?}}, editor = {{Riedl, Ulrich}}, pages = {{47--49}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe. Sustainable Campus Höxter}}, title = {{{Natur, Landschaft und Umwelt in einer digitalisierten Welt}}}, year = {{2022}}, } @inbook{9478, author = {{Maas, Klaus}}, booktitle = {{Natur und Landschaft sind... ja was? Und überhaupt: wozu?}}, editor = {{Riedl, Ulrich}}, pages = {{85--87}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe. Sustainable Campus Höxter}}, title = {{{Eine Sicht auf Natur und Landschaft (und Meer)}}}, year = {{2022}}, } @inbook{9479, author = {{Maßmeyer, Klaus}}, booktitle = {{Natur und Landschaft sind... ja was? Und überhaupt: wozu?}}, editor = {{Riedl, Ulrich}}, pages = {{91--93}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe. Sustainable Campus Höxter}}, title = {{{"Dem Anwenden muss das Erkennen vorausgehen" (Max Planck)}}}, year = {{2022}}, } @inbook{9480, author = {{Oldenburg, Martin}}, booktitle = {{Natur und Landschaft sind... ja was? Und überhaupt: wozu?}}, editor = {{Riedl, Ulrich}}, pages = {{94--96}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe. Sustainable Campus Höxter}}, title = {{{Vom Pott nach Polier}}}, year = {{2022}}, } @inbook{9481, author = {{Rathke, Klaas}}, booktitle = {{Natur und Landschaft sind... ja was? Und überhaupt: wozu?}}, editor = {{Riedl, Ulrich}}, pages = {{97--98}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe. Sustainable Campus Höxter}}, title = {{{Die Kraft des Wassers}}}, year = {{2022}}, } @inbook{9489, author = {{Wolf, Stefan}}, booktitle = {{Natur und Landschaft sind... ja was? Und überhaupt: wozu?}}, editor = {{Riedl, Ulrich}}, pages = {{142--144}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe. Sustainable Campus Höxter}}, title = {{{Gedanken-Bild}}}, year = {{2022}}, } @misc{12825, abstract = {{Agriculture is a major contributor to nitrate groundwater contamination. Hence, farmers are demanded to reduce the environmental impact but simultaneously must provide sufficient food products. One important building block for this "sustainable intensification" are appropriate cropping strategies. The potential of modified crop rotations was evaluated in a high-yielding environment in Northern Germany. Therefore, in five consecutive growing seasons (2016/2017 - 2020/2021) three crop rotations were grown in a field trial and compared with respect to agronomic (cereal unit), economic (gross margin) and environmental (N surplus) parameters. A standard crop rotation, typical for the region of the study, was compared with rearranged and augmented crop rotations. Therefore, crops with a high autumnal N uptake (winter oilseed rape and catch crops) were grown after crops with typically high soil mineral N (SMN) amounts after harvest (faba bean and winter oilseed rape). Due to the change of preceding and subsequent crops, an increased N transfer was supposed to prevent N from leaching and a lower N fertilizer demand of the subsequent crop was expected. On average, the modified crop rotations achieved significantly higher cereal units (9.3 and 10.8 t center dot ha -1) compared to the local crop rotation (8.5 t center dot ha -1). The gross margin of the local crop rotation was 1474 euro center dot ha- 1 and the other crop rotations maintained (1443 euro center dot ha -1) or significantly increased (1572 euro center dot ha -1) this value, respectively. The local crop rotation had a N surplus of 47 kg N center dot ha -1. In contrast, the N surplus of the modified crop rotations was significantly lower (10 and 28 kg N center dot ha -1). In summary, the results showed that a thoughtful rearrangement of crop rotations is an appropriate measure to simultaneously improve yields and gross margins with less unfavorable environmental impacts.}}, author = {{Rose, Maren and Pahlmann, Ingo and Kage, Henning}}, booktitle = {{European Journal of Agronomy}}, issn = {{1873-7331}}, keywords = {{Crop rotation, Sustainable intensification, Cereal unit, Gross margin, Nitrogen surplus, Effective net nitrogen mineralization}}, publisher = {{Elsevier BV}}, title = {{{Modified crop rotations for a sustainable intensification? A case study in a high-yielding environment with recurrent nitrogen surplus}}}, doi = {{10.1016/j.eja.2022.126644}}, volume = {{142}}, year = {{2022}}, } @article{6914, author = {{Fettig, Joachim and Oldenburg, Martin and Pick, Volker and Pilar von Pilchau, Katharina}}, issn = {{1866-0010}}, journal = {{KA : Korrespondenz Abwasser, Abfall ; Organ der DWA}}, number = {{11}}, pages = {{899 -- 912}}, publisher = {{GFA, Gesellschaft zur Förderung der Abwassertechnik}}, title = {{{Feststoffe und Feinpartikel in Straßenabflüssen – Erfassung und Charakterisierung}}}, volume = {{68}}, year = {{2021}}, } @inbook{7686, author = {{Oldenburg, Martin}}, booktitle = {{Situiertes Lernen im Studium – Didaktische Konzepte und Fallbeispiele einer erfahrungsbasierten Hochschullehre}}, editor = {{Schmohl, Tobias}}, isbn = {{978-3-7639-6052-1}}, pages = {{282}}, publisher = {{wbv}}, title = {{{Didaktische Maßnahmen zur Lernstandskontrolle und Aktivierung}}}, volume = {{5}}, year = {{2021}}, } @misc{7823, author = {{Rothardt, S. and Fuß, R. and Pahlmann, Ingo and Kage, H.}}, booktitle = {{Frontiers in Environmental Science}}, issn = {{2296-665X}}, publisher = {{Frontiers}}, title = {{{Post-Harvest N2O Emissions Can Be Mitigated With Organic Amendments}}}, doi = {{10.3389/fenvs.2021.712013}}, year = {{2021}}, } @misc{12225, abstract = {{Lake Sevan is the largest freshwater body in the Caucasus region, situated at an altitude of 1,900 m asl. While it is a major water resource in the whole region, Lake Sevan has received little attention in international limnological literature. Although recent studies pointed to algal blooms and negative impacts of climate change and eutrophication, the physical controls on thermal dynamics have not been characterized and model-based assessments of climate change impacts are lacking. We compiled a decade of historical data for meteorological conditions and temperature dynamics in Lake Sevan and used a one-dimensional hydrodynamic model (GLM 3.1) in order to study thermal structure, the stratification phenology and their meteorological drivers in this large mountain lake. We then evaluated the representativeness of meteorological data products covering almost 4 decades (EWEMBI-dataset: 1979-2016) for driving the model and found that these data are well suited to restore long term thermal dynamics in Lake Sevan. This established model setting allowed us to identify major changes in Lake Sevan’s stratification in response to changing meteorological conditions as expected from ongoing climate change. Our results point to a changing mixing type from dimictic to monomictic as Lake Sevan will experience prolonged summer stratification periods and more stable stratification. These projected changes in stratification must be included in long-term management perspectives as they will intensify water quality deteriorations like surface algal blooms or deep water anoxia.}}, author = {{Shikhani, Muhammed and Mi, Chenxi and Gevorgyan, Artur and Gevorgyan, Gor and Misakyan, Amalya and Azizyan, Levon and Barfus, Klemens and Schulze, Martin and Shatwell, Tom and Rinke, Karsten}}, booktitle = {{Journal of Limnology}}, issn = {{1723-8633}}, keywords = {{General Lake Model (GLM), Lake Sevan, temperature stratification, EWEMBI, climate warming}}, number = {{s1}}, publisher = {{Istituto per lo Studio degli Ecosistemi (Verbania) }}, title = {{{Simulating thermal dynamics of the largest lake in the Caucasus region: The mountain Lake Sevan}}}, doi = {{10.4081/jlimnol.2021.2024}}, volume = {{81}}, year = {{2021}}, } @misc{12226, abstract = {{Light pollution is an environmental stressor of global extent that is growing exponentially in area and intensity. Artificial skyglow, a form of light pollution with large range, is hypothesized to have environmental impact at ecosystem level. However, testing the impact of skyglow at large scales and in a controlled fashion under in situ conditions has remained elusive so far. Here we present the first experimental setup to mimic skyglow at ecosystem level outdoors in an aquatic environment. Spatially diffuse and homogeneous surface illumination that is adjustable between 0.01 and 10 lx, resembling rural to urban skyglow levels, was achieved with white light-emitting diodes at a large-scale lake enclosure facility. The illumination system was enabled by optical modeling with Monte-Carlo raytracing and validated by measurements. Our method can be adapted to other outdoor and indoor skyglow experiments, urgently needed to understand the impact of skyglow on ecosystems.}}, author = {{Jechow, Andreas and Schreck, Günther and Kyba, Christopher C. M. and Berger, Stella A. and Bistarelli, Lukas Thuile and Bodenlos, Matthias and Gessner, Mark O. and Grossart, Hans-Peter and Kupprat, Franziska and Nejstgaard, Jens C. and Pansch, Andreas and Penske, Armin and Sachtleben, Michael and Shatwell, Tom and Singer, Gabriel A. and Stephan, Susanne and Walles, Tim J. W. and Wollrab, Sabine and Zielinska-Dabkowska, Karolina M. and Hölker, Franz}}, booktitle = {{Scientific Reports}}, issn = {{2045-2322}}, number = {{1}}, publisher = {{Springer Nature}}, title = {{{Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large-scale lake enclosure facility}}}, doi = {{10.1038/s41598-021-02772-4}}, volume = {{11}}, year = {{2021}}, } @misc{12227, abstract = {{Lake ecosystems, and the organisms that live within them, are vulnerable to temperature change1,2,3,4,5, including the increased occurrence of thermal extremes6. However, very little is known about lake heatwaves—periods of extreme warm lake surface water temperature—and how they may change under global warming. Here we use satellite observations and a numerical model to investigate changes in lake heatwaves for hundreds of lakes worldwide from 1901 to 2099. We show that lake heatwaves will become hotter and longer by the end of the twenty-first century. For the high-greenhouse-gas-emission scenario (Representative Concentration Pathway (RCP) 8.5), the average intensity of lake heatwaves, defined relative to the historical period (1970 to 1999), will increase from 3.7 ± 0.1 to 5.4 ± 0.8 degrees Celsius and their average duration will increase dramatically from 7.7 ± 0.4 to 95.5 ± 35.3 days. In the low-greenhouse-gas-emission RCP 2.6 scenario, heatwave intensity and duration will increase to 4.0 ± 0.2 degrees Celsius and 27.0 ± 7.6 days, respectively. Surface heatwaves are longer-lasting but less intense in deeper lakes (up to 60 metres deep) than in shallower lakes during both historic and future periods. As lakes warm during the twenty-first century7,8, their heatwaves will begin to extend across multiple seasons, with some lakes reaching a permanent heatwave state. Lake heatwaves are likely to exacerbate the adverse effects of long-term warming in lakes and exert widespread influence on their physical structure and chemical properties. Lake heatwaves could alter species composition by pushing aquatic species and ecosystems to the limits of their resilience. This in turn could threaten lake biodiversity9 and the key ecological and economic benefits that lakes provide to society.}}, author = {{Woolway, R. Iestyn and Jennings, Eleanor and Shatwell, Tom and Golub, Malgorzata and Pierson, Don C. and Maberly, Stephen C.}}, booktitle = {{Nature : the international journal of science}}, issn = {{1476-4687}}, number = {{7842}}, pages = {{402--407}}, publisher = {{Macmillan Publishers Limited, part of Springer Nature }}, title = {{{Lake heatwaves under climate change}}}, doi = {{10.1038/s41586-020-03119-1}}, volume = {{589}}, year = {{2021}}, } @misc{12228, abstract = {{The Qinghai-Tibet Plateau possesses the largest alpine lake system, which plays a crucial role in the land-atmosphere interaction. We report first observations on the thermal and radiation regime under ice of the largest freshwater lake of the Plateau. The results reveal that freshwater lakes on the Tibetan Plateau fully mix under ice. Due to strong solar heating, water temperatures increase above the maximum density value 1–2 months before the ice break, forming stable thermal stratification with subsurface temperatures >6°C. The resulting heat flow from water to ice makes a crucial contribution to ice cover melt. After the ice breakup, the accumulated heat is released into the atmosphere during 1–2 days, increasing lake-atmosphere heat fluxes up to 500 W m−2. The direct biogeochemical consequences of the deep convective mixing are aeration of the deep lake waters and upward supply of nutrients to the upper photic layer.}}, author = {{Kirillin, Georgiy B and Shatwell, Tom and Wen, Lijuan}}, booktitle = {{Geophysical Research Letters}}, issn = {{1944-8007}}, keywords = {{alpine lakes, extreme environments, ake-atmosphere interaction, lake ice, radiatively driven convection, winter limnology}}, number = {{14}}, publisher = {{Wiley}}, title = {{{Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors}}}, doi = {{10.1029/2021gl093429}}, volume = {{48}}, year = {{2021}}, } @misc{12229, abstract = {{One of the most important physical characteristics driving lifecycle events in lakes is stratification. Already subtle variations in the timing of stratification onset and break-up (phenology) are known to have major ecological effects, mainly by determining the availability of light, nutrients, carbon and oxygen to organisms. Despite its ecological importance, historic and future global changes in stratification phenology are unknown. Here, we used a lake-climate model ensemble and long-term observational data, to investigate changes in lake stratification phenology across the Northern Hemisphere from 1901 to 2099. Under the high-greenhouse-gas-emission scenario, stratification will begin 22.0 ± 7.0 days earlier and end 11.3 ± 4.7 days later by the end of this century. It is very likely that this 33.3 ± 11.7 day prolongation in stratification will accelerate lake deoxygenation with subsequent effects on nutrient mineralization and phosphorus release from lake sediments. Further misalignment of lifecycle events, with possible irreversible changes for lake ecosystems, is also likely.}}, author = {{Woolway, R. Iestyn and Sharma, Sapna and Weyhenmeyer, Gesa A. and Debolskiy, Andrey and Golub, Malgorzata and Mercado-Bettín, Daniel and Perroud, Marjorie and Stepanenko, Victor and Tan, Zeli and Grant, Luke and Ladwig, Robert and Mesman, Jorrit and Moore, Tadhg N. and Shatwell, Tom and Vanderkelen, Inne and Austin, Jay A. and DeGasperi, Curtis L. and Dokulil, Martin and La Fuente, Sofia and Mackay, Eleanor B. and Schladow, S. Geoffrey and Watanabe, Shohei and Marcé, Rafael and Pierson, Don C. and Thiery, Wim and Jennings, Eleanor}}, booktitle = {{Nature Communications}}, issn = {{2041-1723}}, number = {{1}}, publisher = {{ Springer Nature }}, title = {{{Phenological shifts in lake stratification under climate change}}}, doi = {{10.1038/s41467-021-22657-4}}, volume = {{12}}, year = {{2021}}, } @misc{12230, abstract = {{Model ensembles have several benefits compared to single-model applications but are not frequently used within the lake modelling community. Setting up and running multiple lake models can be challenging and time consuming, despite the many similarities between the existing models (forcing data, hypsograph, etc.). Here we present an R package, LakeEnsemblR, that facilitates running ensembles of five different vertical one-dimensional hydrodynamic lake models (FLake, GLM, GOTM, Simstrat, MyLake). The package requires input in a standardised format and a single configuration file. LakeEnsemblR formats these files to the input required by each model, and provides functions to run and calibrate the models. The outputs of the different models are compiled into a single file, and several post-processing operations are supported. LakeEnsemblR's workflow standardisation can simplify model benchmarking and uncertainty quantification, and improve collaborations between scientists. We showcase the successful application of LakeEnsemblR for two different lakes.}}, author = {{Moore, Tadhg N. and Mesman, Jorrit P. and Ladwig, Robert and Feldbauer, Johannes and Olsson, Freya and Pilla, Rachel M. and Shatwell, Tom and Venkiteswaran, Jason J. and Delany, Austin D. and Dugan, Hilary and Rose, Kevin C. and Read, Jordan S.}}, booktitle = {{Environmental modelling & software with environment data news}}, issn = {{1873-6726}}, keywords = {{Ensemble modeling, Vertical one-dimensional lake model, R package, Calibration, Thermal structure, Hydrodynamics}}, publisher = {{Elsevier BV}}, title = {{{LakeEnsemblR: An R package that facilitates ensemble modelling of lakes}}}, doi = {{10.1016/j.envsoft.2021.105101}}, volume = {{143}}, year = {{2021}}, } @misc{12232, abstract = {{We investigate the "macronutrient-access hypothesis", which states that the balance between stoichiometric macronutrient demand and accessible macronutrients controls nutrient assimilation by aquatic heterotrophs. Within this hypothesis, we consider bioavailable dissolved organic carbon (bDOC), reactive nitrogen (N) and reactive phosphorus (P) to be the macronutrients accessible to heterotrophic assimilation. Here, reactive N and P are the sums of dissolved inorganic N (nitrate-N, nitrite-N, ammonium-N), soluble-reactive P (SRP), and bioavailable dissolved organic N (bDON) and P (bDOP). Previous data from various freshwaters suggests this hypothesis, yet clear experimental support is missing. We assessed this hypothesis in a proof-of-concept experiment for waters from four small agricultural streams. We used seven different bDOC:reactive N and bDOC:reactive P ratios, induced by seven levels of alder leaf leachate addition. With these treatments and a stream-water specific bacterial inoculum, we conducted a 3-day experiment with three independent replicates per combination of stream water, treatment, and sampling occasion. Here, we extracted dissolved organic matter (DOM) fluorophores by measuring excitation-emission matrices with subsequent parallel factor decomposition (EEM-PARAFAC). We assessed the true bioavailability of DOC, DON, and the DOM fluorophores as the concentration difference between the beginning and end of each experiment. Subsequently, we calculated the bDOC and bDON concentrations based on the bioavailable EEM-PARAFAC fluorophores, and compared the calculated bDOC and bDON concentrations to their true bioavailability. Due to very low DOP concentrations, the DOP determination uncertainty was high, and we assumed DOP to be a negligible part of the reactive P. For bDOC and bDON, the true bioavailability measurements agreed with the same fractions calculated indirectly from bioavailable EEM-PARAFAC fluorophores (bDOC r2 = 0.96, p < 0.001; bDON r2 = 0.77, p < 0.001). Hence we could predict bDOC and bDON concentrations based on the EEM-PARAFAC fluorophores. The ratios of bDOC:reactive N (sum of bDON and DIN) and bDOC:reactive P (equal to SRP) exerted a strong, predictable stoichiometric control on reactive N and P uptake (R2 = 0.80 and 0.83). To define zones of C:N:P (co-)limitation of heterotrophic assimilation, we used a novel ternary-plot approach combining our data with literature data on C:N:P ranges of bacterial biomass. Here, we found a zone of maximum reactive N uptake (C:N:P approx. > 114: < 9:1), reactive P uptake (C:N:P approx. > 170:21: < 1) and reactive N and P co-limitation of nutrient uptake (C:N:P approx. > 204:14:1). The “macronutrient-access hypothesis” links ecological stoichiometry and biogeochemistry, and may be of importance for nutrient uptake in many freshwater ecosystems. However, this experiment is only a starting point and this hypothesis needs to be corroborated by further experiments for more sites, by in-situ studies, and with different DOC sources.}}, author = {{Graeber, Daniel and Tenzin, Youngdoung and Stutter, Marc and Weigelhofer, Gabriele and Shatwell, Tom and von Tümpling, Wolf and Tittel, Jörg and Wachholz, Alexander and Borchardt, Dietrich}}, booktitle = {{Biogeochemistry : an international journal }}, issn = {{1573-515X}}, number = {{1}}, pages = {{1--20}}, publisher = {{Springer }}, title = {{{Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis}}}, doi = {{10.1007/s10533-021-00809-4}}, volume = {{155}}, year = {{2021}}, } @misc{8254, author = {{Kage, H. and Rose, M. and Pahlmann, Ingo}}, booktitle = {{DLG-Mitteilungen}}, number = {{2}}, pages = {{20--23}}, publisher = {{Max-Eyth-Verlagsgesellschaft mbH}}, title = {{{Düngeverordnung. Wie lassen sich die Fruchtfolgen anpassen?}}}, year = {{2021}}, } @misc{8326, abstract = {{Gamification is a widely used way of increasing motivation and fun in the use of systems that are not games. By outlining critical aspects in developing gamified systems, we adapted the modelling technique event storming in the context of a special case study where a gamified, collaborative platform was developed. For this purpose, the relationship of event storming and spatial hypertext has been worked out and an event storming extension has been introduced based on spatial hypertext principles. With respect to the case study and further insights in the academic context, we discuss how the emerging nature of event storming could benefit from a specialized spatial hypertext tool.}}, author = {{Grimm, Valentin and Rubart, Jessica}}, booktitle = {{Proceedings of the 4th international Workshop on Human Factors in Hypertext (HUMAN’21)}}, editor = {{Rubart, Jessica and Atzenbeck, Claus}}, isbn = {{978-1-4503-8560-2}}, keywords = {{Spatial Hypertext, Gamification, Event Storming, System Modeling, Collaborative Modeling, Gamified System}}, location = {{Virtual Event, Ireland}}, pages = {{3--10}}, publisher = {{ACM Press}}, title = {{{Modelling Gamified Systems with Event Storming Augmented by Spatial Hypertext}}}, doi = {{10.1145/3468143.3483927}}, year = {{2021}}, } @proceedings{8383, abstract = {{Human Factors in Hypertext 2021 (HUMAN'21) is the 4th workshop in this series. It is sponsored by ACM SIGWEB and is associated to the ACM Conference on Hypertext and Social Media 2021, which took place between August 30th and September 2nd as a virtual event. HUMAN'21 took place on August 30th-the conference's workshop day. This year's workshop is held in a difficult time: the global Corona pandemic makes attending meetings or traveling risky for our health. It almost seems as a contradiction to the 2019 ACM Hypertext motto "tear down the wall". However, today's digital media enables us to communicate over distance or even attend larger meetings online. This also opens the question about the role of hypertext as a medium for communication-a perfect topic match for the HUMAN workshop series, which has a user-centric focus on hypertext. The user-centric view not only includes user interfaces and interaction, but also discussions about hypertext application domains. Furthermore, the workshop raises the question of how original hypertext ideas (e.g., Doug Engelbart's "augmenting human intellect" or Frank Halasz' "hypertext as a medium for thinking and communication") can improve today's hypertext systems. As such, the HUMAN workshop also appreciates previous work on hypertext systems. In order to support this, we invite researchers to give demos of vintage hypertext systems. Last year we started with Norman Meyrowitz presenting Intermedia; this year Mark Anderson has been invited to give a demo of Microcosm.}}, editor = {{Rubart, Jessica and Atzenbeck, Claus}}, isbn = {{978-1-4503-8560-2}}, location = {{Virtual Event; Dublin, Ireland}}, publisher = {{ACM Press}}, title = {{{Proceedings of the 4th international Workshop on Human Factors in Hypertext (HUMAN’21)}}}, doi = {{10.1145/3468143}}, year = {{2021}}, } @inbook{8390, author = {{Rubart, Jessica}}, booktitle = {{The Future of Text II}}, editor = {{Hegland, Frode A.}}, pages = {{107--108}}, publisher = {{Future Text Publishing}}, title = {{{Collaborative-Intelligent Sense-Making}}}, doi = {{10.48197/fot2021}}, year = {{2021}}, } @misc{8391, author = {{Atzenbeck, Claus and Rubart, Jessica and Millard, David}}, booktitle = {{New Review of Hypermedia and Multimedia}}, number = {{1-2}}, pages = {{1--5}}, publisher = {{Taylor & Francis}}, title = {{{Special issue of HT'19 selected papers}}}, doi = {{10.1080/13614568.2021.1943283}}, volume = {{27}}, year = {{2021}}, } @misc{8393, author = {{D'Auria, Daniela and Mertens, Robert and Panchea, A.M. and Rubart, Jessica}}, booktitle = {{International Journal of Semantic Computing}}, number = {{4}}, pages = {{417--418}}, publisher = {{World Scientific Publishing}}, title = {{{Guest Editors' Introduction}}}, doi = {{10.1142/S1793351X21020037}}, volume = {{15}}, year = {{2021}}, } @misc{10637, editor = {{D’Auria, Daniela and Mertens, Robert and Panchea, Adina M. and Rubart, Jessica}}, issn = {{1793-7108}}, publisher = {{World Scientific}}, title = {{{Special Issue: Selected Papers from 15th IEEE International Conference on Semantic Computing (ICSC 2021)}}}, volume = {{Vol. 15, Bd. 4}}, year = {{2021}}, } @misc{10638, editor = {{Atzenbeck, Claus and Rubart, Jessica and Millard, David E.}}, issn = {{1740-7842}}, pages = {{203}}, publisher = {{Taylor & Francis}}, title = {{{Invited papers from the ACM Conference on Hypertext and Social Media}}}, volume = {{Vol. 27, Bd. 1-2}}, year = {{2021}}, } @misc{12231, abstract = {{In temperate lakes, it is generally assumed that light rather than temperature constrains phytoplankton growth in winter. Rapid winter warming and increasing observations of winter blooms warrant more investigation of these controls. We investigated the mechanisms regulating a massive winter diatom bloom in a temperate lake. High frequency data and process-based lake modeling demonstrated that phytoplankton growth in winter was dually controlled by light and temperature, rather than by light alone. Water temperature played a further indirect role in initiating the bloom through ice-thaw, which increased light exposure. The bloom was ultimately terminated by silicon limitation and sedimentation. These mechanisms differ from those typically responsible for spring diatom blooms and contributed to the high peak biomass. Our findings show that phytoplankton growth in winter is more sensitive to temperature, and consequently to climate change, than previously assumed. This has implications for nutrient cycling and seasonal succession of lake phytoplankton communities. The present study exemplifies the strength in integrating data analysis with different temporal resolutions and lake modeling. The new lake ecological model serves as an effective tool in analyzing and predicting winter phytoplankton dynamics for temperate lakes.}}, author = {{Kong, Xiangzhen and Seewald, Michael and Dadi, Tallent and Friese, Kurt and Mi, Chenxi and Boehrer, Bertram and Schultze, Martin and Rinke, Karsten and Shatwell, Tom}}, booktitle = {{Water research : a journal of the International Water Association}}, issn = {{1879-2448}}, keywords = {{Winter diatom bloom, High frequency monitoring, Lake modeling, Light limitation, Temperature}}, publisher = {{Elsevier BV}}, title = {{{Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling}}}, doi = {{10.1016/j.watres.2020.116681}}, volume = {{190}}, year = {{2020}}, } @misc{12233, abstract = {{The thermal structure in reservoirs affects the development of aquatic ecosystems, and can be substantially influenced by climate change and management strategies. We applied a two-dimensional hydrodynamic model to explore the response of the thermal structure in Germany's largest drinking water reservoir, Rappbode Reservoir, to future climate projections and different water withdrawal strategies. We used projections for representative concentration pathways (RCP) 2.6, 6.0 and 8.5 from an ensemble of 4 different global climate models. Simulation results showed that epilimnetic water temperatures in the reservoir strongly increased under all three climate scenarios. Hypolimnetic temperatures remained rather constant under RCP 2.6 and RCP 6.0 but increased markedly under RCP 8.5. Under the intense warming in RCP 8.5, hypolimnion temperatures were projected to rise from 5 °C to 8 °C by the end of the century. Stratification in the reservoir was projected to be more stable under RCP 6.0 and RCP 8.5, but did not show significant changes under RCP 2.6. Similar results were found with respect to the light intensity within the mixed-layer. Moreover, the results suggested that surface withdrawal can be an effective adaptation strategy under strong climate warming (RCP 8.5) to reduce surface warming and avoid hypolimnetic warming. This study documents how global scale climate projections can be translated into site-specific climate impacts to derive adaptation strategies for reservoir operation. Moreover, our results illustrate that the most intense warming scenario, i.e. RCP 8.5, demands far-reaching climate adaptation while the mitigation scenario (RCP 2.6) does not require adaptation of reservoir management before 2100.}}, author = {{Mi, Chenxi and Shatwell, Tom and Ma, Jun and Xu, Yaqian and Su, Fangli and Rinke, Karsten}}, booktitle = {{The science of the total environment : an international journal for scientific research into the environment and its relationship with man}}, issn = {{1879-1026}}, keywords = {{Rappbode Reservoir, Thermal structure, Climate change, CE-QUAL-W2, Selective water withdrawal}}, number = {{12}}, publisher = {{Elsevier BV}}, title = {{{Ensemble warming projections in Germany's largest drinking water reservoir and potential adaptation strategies}}}, doi = {{10.1016/j.scitotenv.2020.141366}}, volume = {{748}}, year = {{2020}}, } @misc{12234, author = {{Kyba, Christopher C. M. and Conrad, Jeff and Shatwell, Tom}}, booktitle = {{Nature ecology & evolution}}, issn = {{2397-334X}}, number = {{3}}, pages = {{318--319}}, publisher = {{Nature Publishing Group }}, title = {{{Lunar illuminated fraction is a poor proxy for moonlight exposure}}}, doi = {{10.1038/s41559-020-1096-7}}, volume = {{4}}, year = {{2020}}, } @misc{12235, abstract = {{Metalimnetic oxygen minima are observed in many lakes and reservoirs, but the mechanisms behind this phenomena are not well understood. Thus, we simulated the metalimnetic oxygen minimum (MOM) in the Rappbode Reservoir with a well-established two-dimensional water quality model (CE-QUAL-W2) to systematically quantify the chain of events leading to its formation. We used high-resolution measured data to calibrate the model, which accurately reproduced the physical (e.g. water level and water temperature), biogeochemical (e.g. nutrient and oxygen dynamics) and ecological (e.g. algal community dynamics) features of the reservoir, particularly the spatial and temporal extent of the MOM. The results indicated that around 60% of the total oxygen consumption rate in the MOM layer originated from benthic processes whereas the remainder originated from pelagic processes. The occurrence of the cyanobacterium Planktothrix rubescens in the metalimnion delayed and slightly weakened the MOM through photosynthesis, although its decaying biomass ultimately induced the MOM. Our research also confirmed the decisive role of water temperature in the formation of the MOM since the water temperatures, and thus benthic and pelagic oxygen consumption rates, were higher in the metalimnion than in the hypolimnion. Our model is not only providing novel conclusions about the drivers of MOM development and their quantitative contributions, it is also a new tool for understanding and predicting ecological and biogeochemical water quality dynamics.}}, author = {{Mi, Chenxi and Shatwell, Tom and Ma, Jun and Wentzky, Valerie Carolin and Boehrer, Bertram and Xu, Yaqian and Rinke, Karsten}}, booktitle = {{Water research : a journal of the International Water Association}}, issn = {{1879-2448}}, keywords = {{Rappbode reservoir, CE-QUAL-W2, Planktothrix rubescens, Metalimnion, Oxygen consumption, Benthic processes}}, number = {{5}}, publisher = {{Elsevier BV}}, title = {{{The formation of a metalimnetic oxygen minimum exemplifies how ecosystem dynamics shape biogeochemical processes: A modelling study}}}, doi = {{10.1016/j.watres.2020.115701}}, volume = {{175}}, year = {{2020}}, } @techreport{2184, abstract = {{Material flows and energy flows can be correlated with sufficient data, e.g. on production energies, annual production quantities and degrees of dissipation with temperature increases in the atmosphere, volumes of molten ice or sea level increases, as well as with probability statements, information densities and management recommendations. All these quantities can be described by the comprehensive term entropy. In order to consider the efficiency of material and energy flows, the difficulty to understand the concept of entropy with its different definitions can be summarized simply and easily in a model related to ice cubes. The quality of a model containing percentage probability statements, statements on dissipation in material flow models in connection with statements on information density and its description by the ice cube model is still to be determined in practice in suitable material flow models. Such projects should show the types of mathematical correlations between dissipation degrees, entropy increase, increase of molten ice and sea level rise. }}, author = {{Sietz, Manfred and Wrenger, Burkhard}}, keywords = {{Entropy, Ice Cube, Sustainability, Sea Level Rise, Information Density, Probability Statements, Material Flow Model, Dissipation}}, title = {{{Entropie eines Eiswürfels, Wahrscheinlichkeitsaussagen und Meeresspiegelerhöhung}}}, doi = {{10.25644/76E5-PC61}}, year = {{2020}}, } @misc{8324, author = {{Rubart, Jessica and Lietzau, Benjamin and Söhlke, Patrick}}, booktitle = {{14th International Conference on Semantic Computing, International Workshop on Semantic Data Integration (SDI’20)}}, location = {{San Diego, CA, USA}}, pages = {{434--438}}, publisher = {{IEEE Press}}, title = {{{Analyzing Manufacturing Data in a Digital Control Room Making Use of Semantic Annotations}}}, doi = {{https://doi.org/10.1109/ICSC.2020.00084}}, year = {{2020}}, } @misc{8387, author = {{Atzenbeck, Claus and Rubart, Jessica}}, booktitle = {{ Proceedings of the 31st ACM Conference on Hypertext and Social Media (HT'20)}}, editor = {{ Salter, Anastasia and Barber, John F. }}, location = {{Virtual}}, pages = {{307--308}}, publisher = {{ACM Press}}, title = {{{3rd Workshop on Human Factors in Hypertext (HUMAN'20)}}}, doi = {{/10.1145/3372923.3405431}}, year = {{2020}}, } @inbook{8388, author = {{Faupel, Christian and Rubart, Jessica}}, booktitle = {{Qualität packt Lehre. Miszellen von der Technischen Hochschule Ostwestfalen-Lippe}}, editor = {{Schäffer, Dennis and Mersch, André}}, isbn = {{978-3-7639-6232-7}}, pages = {{69--72}}, publisher = {{wbv media}}, title = {{{„Das solltest Du doch machen?!“- Projekte digital managen mit EDU}}}, doi = {{10.3278/6004802w}}, year = {{2020}}, } @inbook{8389, author = {{Rubart, Jessica}}, booktitle = {{The Future of Text}}, editor = {{Hegland, Frode A.}}, pages = {{218}}, publisher = {{Future Text Publishing}}, title = {{{The Future of Text}}}, doi = {{10.48197/fot2020a}}, year = {{2020}}, } @proceedings{10629, editor = {{Atzenbeck, Claus and Rubart, Jessica}}, isbn = {{978-1-4503-8058-4}}, location = {{Virtual}}, publisher = {{Association for Computing Machinery (ACM)}}, title = {{{Proceedings of the 3rd Workshop on Human Factors in Hypertext (HUMAN'20)}}}, doi = {{10.1145/3406853}}, year = {{2020}}, } @book{4894, abstract = {{Das vorliegende Buch vermittelt wichtige Grundlagen der Elektrochemie. Hierzu zählen - die Entstehung von Ladungsträgern- die Mechanismen des Ladungstransports- die Grundlagen der Elektrolyse- Elektrochemische Untersuchungsmethoden- Elektrochemische Spannungsquellen - industrielle AnwendungenDie Zusammenhänge werden anhand zahlreicher einführender Experimente erläutert. Neben einer kurzen Einführung in die jeweiligen theoretischen Vorstellungen werden experimentelle Aufbauten beschrieben, Ergebnisse mitgeteilt und interpretiert. Besondere Kenntnisse in den Fächern Chemie, Physik oder Elektronik werden nicht vorausgesetzt.Die ZielgruppenDas Buch wendet sich an Studierende der Fachrichtungen Maschinenbau, Verfahrenstechnik, Versorgungstechnik, Energietechnik und Umwelttechnik an Fachhochschulen und Universitäten. Zudem wendet es sich an Ingenieure dieser Bereiche, die Grundkenntnisse der Elektrochemie erwerben möchten. Das Buch wendet sich ferner an Studierende des Lehramts im Fach Chemie sowie an Chemielehrer der Sekundarstufe II.}}, author = {{Dohmann, Joachim}}, isbn = {{978-3-662-59762-0}}, pages = {{557}}, publisher = {{Vieweg Springer}}, title = {{{Experimentelle Einführung in die Elektrochemie: Grundlagen - Konzepte - Theorie}}}, doi = {{10.1007/978-3-662-59763-7}}, year = {{2020}}, } @inproceedings{5060, author = {{Fettig, Joachim and Pilar von Pilchau, Katharina}}, location = {{Harbin, P.R. China}}, pages = {{11--14}}, title = {{{Water Supply in Cold Climates – Challenges and Solutions}}}, year = {{2020}}, } @misc{7926, author = {{Oldenburg, Martin and Rohde, Raphael and Wuttke, Maika and Kuck, Wolfgang}}, pages = {{37}}, publisher = {{Technische Hochschule Ostwestfalen-Lippe }}, title = {{{Handbuch Unterdruckentwässerung - Ein Leitfaden für die Installation in Gebäuden }}}, year = {{2019}}, } @misc{12236, abstract = {{The physical response of lakes to climate warming is regionally variable and highly dependent on individual lake characteristics, making generalizations about their development difficult. To qualify the role of individual lake characteristics in their response to regionally homogeneous warming, we simulated temperature, ice cover, and mixing in four intensively studied German lakes of varying morphology and mixing regime with a one-dimensional lake model. We forced the model with an ensemble of 12 climate projections (RCP4.5) up to 2100. The lakes were projected to warm at 0.10–0.11 ∘C decade−1, which is 75 %–90 % of the projected air temperature trend. In simulations, surface temperatures increased strongly in winter and spring, but little or not at all in summer and autumn. Mean bottom temperatures were projected to increase in all lakes, with steeper trends in winter and in shallower lakes. Modelled ice thaw and summer stratification advanced by 1.5–2.2 and 1.4–1.8 days decade−1 respectively, whereas autumn turnover and winter freeze timing was less sensitive. The projected summer mixed-layer depth was unaffected by warming but sensitive to changes in water transparency. By mid-century, the frequency of ice and stratification-free winters was projected to increase by about 20 %, making ice cover rare and shifting the two deeper dimictic lakes to a predominantly monomictic regime. The polymictic lake was unlikely to become dimictic by the end of the century. A sensitivity analysis predicted that decreasing transparency would dampen the effect of warming on mean temperature but amplify its effect on stratification. However, this interaction was only predicted to occur in clear lakes, and not in the study lakes at their historical transparency. Not only lake morphology, but also mixing regime determines how heat is stored and ultimately how lakes respond to climate warming. Seasonal differences in climate warming rates are thus important and require more attention.}}, author = {{Shatwell, Tom and Thiery, Wim and Kirillin, Georgiy}}, booktitle = {{Hydrology and earth system sciences : HESS }}, issn = {{1607-7938}}, number = {{3}}, pages = {{1533--1551}}, publisher = {{Copernicus GmbH}}, title = {{{Future projections of temperature and mixing regime of European temperate lakes}}}, doi = {{10.5194/hess-23-1533-2019}}, volume = {{23}}, year = {{2019}}, } @article{1722, abstract = {{Granular activated carbon (GAC) adsorption, as well as ozonation in combination with biodegradation was investigated in order to remove refractory organics from biologically pre-treated process waters (PW) produced by the hydrothermal carbonization (HTC) of spent grains and fine mulch. Kinetic tests revealed that the organics in spent grains PW had much lower molecular weights than organics in fine mulch PW. Moreover, isotherms showed that they were more strongly adsorbable. This was confirmed in GAC column experiments, where the breakthrough curves could be predicted fairly well by a dynamic adsorption model. On the other hand, ozonation had a stronger effect on fine mulch PW with respect to an enhancement of the aerobic degradability. Thus, the type of input material determines the properties of soluble reaction products from the carbonization process that must be accounted for when selecting the most suitable post-treatment method for HTC PW. However, adsorption on granular activated carbon should always be the final stage.}}, author = {{Fettig, Joachim Hans Otto and Austermann-Haun, Ute and Meier, Jan-Felix and Busch, Anna and Gilbert, Eva}}, issn = {{2073-4441}}, journal = {{Water}}, keywords = {{HTC process water, post-treatment, refractory organics, activated carbon adsorption, ozonation}}, number = {{4}}, publisher = {{MDPI}}, title = {{{Options for Removing Refractory Organic Substances in Pre-Treated Process Water from Hydrothermal Carbonization}}}, doi = {{10.3390/w11040730}}, volume = {{11}}, year = {{2019}}, } @inbook{8392, author = {{Gabriel, Maria Alejandra and Althaus, Christoph and Rubart, Jessica and To, Kieu-Anh}}, booktitle = {{Hochschullehre als reflektierte Praxis}}, editor = {{Schmohl, Tobias and To, Kieu-Anh}}, isbn = {{978-3-7639-6111-5}}, pages = {{111--118}}, publisher = {{wbv}}, title = {{{Interaktives und kooperatives Lernen mit Multitouch-Anwendungen}}}, doi = {{10.3278/6004751w}}, volume = {{1}}, year = {{2019}}, } @misc{8394, author = {{Rubart, Jessica}}, booktitle = {{Proceedings of the 2nd Workshop on Human Factors in Hypertext}}, editor = {{Rubart, Jessica and Atzenbeck, Claus}}, location = {{Hof}}, pages = {{13--18}}, publisher = {{ACM Press}}, title = {{{On Managing Spatial Hypermedia with Document Stores}}}, doi = {{10.1145/3345509.3349278}}, year = {{2019}}, } @proceedings{10630, editor = {{Rubart, Jessica and Atzenbeck, Claus}}, isbn = {{978-1-4503-6899-5}}, publisher = {{Association for Computing Machinery (ACM)}}, title = {{{Proceedings of the 2nd International Workshop on Human Factors in Hypertext (HUMAN'19)}}}, doi = {{10.1145/3345509}}, year = {{2019}}, } @proceedings{10633, editor = {{Atzenbeck, Claus and Rubart, Jessica and Millard, David E.}}, isbn = {{978-1-4503-6885-8}}, location = {{Hof, Germany}}, publisher = {{Association for Computing Machinery (ACM)}}, title = {{{Proceedings of the 30th ACM Conference on Hypertext and Social Media (HT'19)}}}, doi = {{10.1145/3342220}}, year = {{2019}}, } @inbook{5059, author = {{Fettig, Joachim and Oldenburg, Martin}}, booktitle = {{Physical and Cyber Safety in Critical Water Infrastructure}}, editor = {{Ratnaweera, H. and Pivovarov, O.}}, pages = {{82--90}}, publisher = {{IOS Press}}, title = {{{Overview: Preparedness in the Water Supply and the Sanitation and Sewerage Sectors in Germany and Europe}}}, volume = {{56}}, year = {{2019}}, } @misc{12237, abstract = {{The effectiveness of controlling nitrogen (N) to manage lake eutrophication is debated. Long-term, whole-lake case studies are required to determine whether diazotrophic cyanobacteria can fix sufficient N to offset a reduction of N-inputs. We document the recovery of shallow, productive Lake Müggelsee (Germany) over 37 yr (sampling interval 1–2 weeks) during a decrease of N and phosphorus (P) loading of 79% and 69%, respectively. Nitrogen concentrations in the lake responded immediately to loading reduction whereas P concentrations remained elevated for about 20 yr. Total nitrogen (TN) in the lake was always lower than TN in the inflow. Accordingly, estimated denitrification and N-burial rates substantially exceeded N2 fixation rates in the long term. Phosphorus was growth limiting in spring whereas N was clearly limiting in summer due to high sediment P-release. TN : TP ratios, normalized to phytoplankton biovolume by regression, were 25.5 (weight) in spring and 3.3 in summer. During the study period, dissolved inorganic N (DIN) concentrations in summer decreased and the duration of low DIN concentrations increased by ca. 100 d. The biovolume of cyanobacteria and total phytoplankton decreased by 89% and 76%, respectively. The proportion of N2-fixing cyanobacteria during summer decreased from 36% to 14% of the total phytoplankton biovolume. The total concentration of heterocysts and estimated total N2 fixation did not change over time. In the long term, decreasing N-inputs effectively controlled summer cyanobacteria including N2-fixing taxa, which did not compensate for the N-deficit. A P-only control strategy would not have been as successful.}}, author = {{Shatwell, Tom and Köhler, Jan}}, booktitle = {{Limnology and Oceanography}}, issn = {{1939-5590}}, number = {{S1}}, publisher = {{Wiley}}, title = {{{Decreased nitrogen loading controls summer cyanobacterial blooms without promoting nitrogen‐fixing taxa: Long‐term response of a shallow lake}}}, doi = {{10.1002/lno.11002}}, volume = {{64}}, year = {{2018}}, } @misc{12239, abstract = {{The modelling community has identified challenges for the integration and assessment of lake models due to the diversity of modelling approaches and lakes. In this study, we develop and assess a one-dimensional lake model and apply it to 32 lakes from a global observatory network. The data set included lakes over broad ranges in latitude, climatic zones, size, residence time, mixing regime and trophic level. Model performance was evaluated using several error assessment metrics, and a sensitivity analysis was conducted for nine parameters that governed the surface heat exchange and mixing efficiency. There was low correlation between input data uncertainty and model performance and predictions of temperature were less sensitive to model parameters than prediction of thermocline depth and Schmidt stability. The study provides guidance to where the general model approach and associated assumptions work, and cases where adjustments to model parameterisations and/or structure are required.}}, author = {{Bruce, Louise C. and Frassl, Marieke A. and Arhonditsis, George B. and Gal, Gideon and Hamilton, David P. and Hanson, Paul C. and Hetherington, Amy L. and Melack, John M. and Read, Jordan S. and Rinke, Karsten and Rigosi, Anna and Trolle, Dennis and Winslow, Luke and Adrian, Rita and Ayala, Ana I. and Bocaniov, Serghei A. and Boehrer, Bertram and Boon, Casper and Brookes, Justin D. and Bueche, Thomas and Busch, Brendan D. and Copetti, Diego and Cortés, Alicia and de Eyto, Elvira and Elliott, J. Alex and Gallina, Nicole and Gilboa, Yael and Guyennon, Nicolas and Huang, Lei and Kerimoglu, Onur and Lenters, John D. and MacIntyre, Sally and Makler-Pick, Vardit and McBride, Chris G. and Moreira, Santiago and Özkundakci, Deniz and Pilotti, Marco and Rueda, Francisco J. and Rusak, James A. and Samal, Nihar R. and Schmid, Martin and Shatwell, Tom and Snorthheim, Craig and Soulignac, Frédéric and Valerio, Giulia and van der Linden, Leon and Vetter, Mark and Vinçon-Leite, Brigitte and Wang, Junbo and Weber, Michael and Wickramaratne, Chaturangi and Woolway, R. Iestyn and Yao, Huaxia and Hipsey, Matthew R.}}, booktitle = {{Environmental modelling & software with environment data news }}, issn = {{1873-6726}}, keywords = {{Lake model, Stratification, GLM, Model assessment, Global observatory data, Network science}}, number = {{4}}, pages = {{274--291}}, publisher = {{Elsevier Science}}, title = {{{A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network}}}, doi = {{10.1016/j.envsoft.2017.11.016}}, volume = {{102}}, year = {{2018}}, } @article{3085, author = {{Fettig, Joachim and Austermann-Haun, Ute and Liebe, H. and Meier, J. F. and Busch, A. and Gilbert, E.}}, journal = {{gwf - Wasser + Abwasser}}, number = {{September}}, pages = {{65 -- 79}}, title = {{{Möglichkeiten und Grenzen der Behandlung von Prozesswässern aus der Hydrothermalen Carbonisierung}}}, year = {{2018}}, } @proceedings{10631, editor = {{Atzenbeck, Claus and Rubart, Jessica}}, isbn = {{978-1-4503-5658-9}}, location = {{Baltimore, Towson University, USA}}, publisher = {{Association for Computing Machinery (ACM)}}, title = {{{Proceedings of the 1st Workshop on Human Factors in Hypertext (HUMAN'18)}}}, doi = {{10.1145/3215611}}, year = {{2018}}, } @inbook{5056, author = {{Fettig, Joachim and Austermann-Haun, Ute and Liebe, H. and Meier, J.F. and Busch, A. and Gilbert, E.}}, booktitle = {{Abwassertechnik und Kläranlagen 2018/2019}}, editor = {{Runge, Hella}}, pages = {{53--67}}, publisher = {{Vulkan-Verlag}}, title = {{{Möglichkeiten und Grenzen der Behandlung von Prozesswässern aus der Hydrothermalen Carbonisierung}}}, year = {{2018}}, } @article{5058, author = {{Le, Thi Thu Huyen and Fettig, Joachim and Meon, Günter}}, issn = {{1642-3593}}, journal = {{Ecohydrology & Hydrobiology}}, number = {{19}}, pages = {{54--65}}, title = {{{Kinetics and simulation of nitrification at various pH values of a polluted river in the tropics}}}, doi = {{10.1016/j.ecohyd.2018.06.006}}, year = {{2018}}, } @inbook{9924, author = {{Maas, Klaus and Wrenger, Burkhard}}, booktitle = {{25 Jahre Forschungsschwerpunkt Kulturlandschaft}}, editor = {{Riedl, Ulrich and Herber, Katrin and Lohr, Mathias and Eller-Studzinsky, Bettina}}, pages = {{60--63}}, title = {{{Fernerkundung und Drohnen als Analyse-Werkzeuge in der Kulturlandschaft}}}, year = {{2018}}, } @misc{12856, abstract = {{Multimodal interfaces provide users with a number of different ways of interacting with a system. This paper proposes the integration of an explicit interaction model as an extension of the well-known MVC architectural pattern. It builds upon previous extensions regarding explicit structure, user interface (UI), and environmental models. In addition, this paper proposes an explicit UI layer in a service-oriented hypermedia infrastructure to address requirements from multimodal interfaces.}}, author = {{Rubart, Jessica}}, booktitle = {{Proceedings of the 1st Workshop on Human Factors in Hypertext}}, editor = {{Atzenbeck, Claus}}, isbn = {{978-1-4503-5658-9}}, keywords = {{Multimodal interaction, hypermedia structures, hypertext infrastructure, structure model, interaction model, MVC, digital boardroom}}, location = {{Baltimore, MD}}, pages = {{17--21}}, publisher = {{ACM}}, title = {{{Multimodal Interaction with Hypermedia Structures}}}, doi = {{10.1145/3215611.3215613}}, year = {{2018}}, } @inproceedings{682, abstract = {{Well-designed interactive visualizations help users gaining insights into an organization's data and, finally, making decisions. In the Business Intelligence (BI) context, the most popular visualization approach is dashboards, which combine multiple visual components, such as charts, on a single view. Well-founded decisions require the collaboration of several analysts, such as domain experts, line-of-business managers, or key suppliers. For face-to-face collaboration settings, multi-display environments and smart meeting rooms have improved. In the BI context, support for boardrooms is being discussed for this setting. In this paper, we propose annotation dashboards, based on a multitouch and multiuser interaction approach, which are integrated in a multi-display environment constituting a BI digital boardroom. In addition, means of semantic navigation help business users to easily get insights into business context information.}}, author = {{Rubart, Jessica and Lietzau, Benjamin and Soehlke, Patrick and Alex, Bastian and Becker, Stephan and Wienboeker, Tim}}, booktitle = {{2017 IEEE 11th International Conference on Semantic Computing (ICSC)}}, isbn = {{978-1-5090-4285-2 }}, keywords = {{Semantics, Data visualization, Navigation, Collaboration, Context, Business intelligence, Digital Boardroom, Multitouch and Multiuser Interaction}}, location = {{San Diego, CA, USA}}, publisher = {{IEEE}}, title = {{{Semantic Navigation and Discussion in a Digital Boardroom}}}, doi = {{10.1109/icsc.2017.39}}, year = {{2017}}, } @inbook{7921, author = {{Londong, Jörg and Giese, Thomas and Oldenburg, Martin}}, booktitle = {{Wasserinfrastrukturen für die zukunftsfähige Stadt, Beiträge aus der INIS-Forschung}}, editor = {{Libbe, Jens and Bock, Stephanie and Nickel, Darla and Langer, Margarethe and Wilhelm, Christian}}, pages = {{104 -- 107}}, publisher = {{Difu}}, title = {{{Stoffliche und energetische Nutzung der Teilströme in KREIS und ihre Umsetzung im Stadtquartier Jenfelder Au}}}, year = {{2017}}, } @inbook{7922, author = {{Winker, Martina and Giese, Thomas and Libbe, Jörg and Oldenburg, Martin and Schramm, Engelbert}}, booktitle = {{Wasserinfrastrukturen für die zukunftsfähige Stadt, Beiträge aus der INIS-Forschung}}, editor = {{Libbe, Jens and Bock, Stephanie and Nickel, Darla and Langer, Margarethe and Wilhelm, Christian}}, pages = {{134 -- 139}}, publisher = {{Difu}}, title = {{{Probleme und Stolpersteine beim Umsetzen neuartiger Wasserinfrastrukturen: Diskrepanzen zwischen Theorie und Praxis }}}, year = {{2017}}, } @misc{7923, author = {{Oldenburg, Martin}}, booktitle = {{Korrespondenz Abwasser}}, issn = {{1866-0010}}, number = {{12}}, pages = {{1074 -- 1082}}, publisher = {{DWA - Deutsche Vereinigung für Wasserwirtschaft, Abwasser und Abfall e. V.}}, title = {{{Neuartige Sanitärsysteme (NASS) - Eine Bilanzierung von Nährstoffen, Energieverbrauch und CO2-Emissionen }}}, volume = {{64}}, year = {{2017}}, } @misc{12238, abstract = {{Phytoplankton growth depends not only on mean intensity but also on the dynamics of the light supply. In surface mixed layers, phytoplankton may rapidly move between strong light and almost darkness. The nonlinear light‐dependency of growth may differ between constant and fluctuating light because of the different frequency distribution of light and/or acclimation processes. The present study compares for the first time light‐dependency of photosynthesis and growth of phytoplankton communities in situ under defined mixing conditions and at fixed depths. Maximum growth rates per day were not significantly different, but the growth efficiency was much higher under constant light than under fluctuating light of sub‐saturating daily irradiance. Phytoplankton incubated under fluctuating light needed about three times higher mean daily irradiances to balance photosynthesis and losses than under constant light. The difference in growth efficiency was mostly caused by the different frequency distribution of underwater light, as was estimated by a photosynthesis model of sufficient temporal resolution. The present study indicates a considerable overestimation of phytoplankton growth at sub‐saturating light in well‐mixed water layers by the common growth measurements under constant light. This implies an underestimation of the compensation light intensities and respective overestimations of the critical mixing depths.}}, author = {{Köhler, Jan and Wang, Lan and Guislain, Alexis and Shatwell, Tom}}, booktitle = {{Limnology and Oceanography}}, issn = {{1939-5590}}, number = {{3}}, pages = {{1156--1167}}, publisher = {{Wiley}}, title = {{{Influence of vertical mixing on light‐dependency of phytoplankton growth}}}, doi = {{10.1002/lno.10761}}, volume = {{63}}, year = {{2017}}, } @misc{12240, abstract = {{The hydrology of the lake-rich Tibetan Plateau is important for the global climate, yet little is known about the thermal regime of Tibetan lakes due to scant data. We (i) investigated the characteristic seasonal temperature patterns and recent trends in the thermal and stratification regimes of lakes on the Tibetan Plateau and (ii) tested the performance of the one-dimensional lake parameterization scheme FLake for the Tibetan lake system. For this purpose, we combined 3 years of in situ lake temperature measurements, several decades of satellite observations, and the global reanalysis data. We chose the two largest freshwater Tibetan lakes, Ngoring and Gyaring, as study sites. The lake model FLake faithfully reproduced the specific features of the high-altitude lakes and was subsequently applied to reconstruct the vertically resolved heat transport in both lakes during the last 4 decades. The model suggested that Ngoring and Gyaring were ice-covered for about 6 months and stratified in summer for about 4 months per year with a short spring overturn and a longer autumn overturn. In summer the surface mixed boundary layer extended to 6–8 m of depth and was about 20 % shallower in the more turbid Gyaring. The thermal regime of the transparent Ngoring responded more strongly to atmospheric forcing than Gyaring, where the higher turbidity damped the response. According to the reanalysis data, air temperatures and humidity have increased, whereas solar radiation has decreased, since the 1970s. Surprisingly, the modeled mean lake temperatures did not change, nor did the phenology of the ice cover or stratification. Lake surface temperatures in summer increased only marginally. The reason is that the increase in air temperature was offset by the decrease in radiation, probably due to increasing humidity. This study demonstrates that air temperature trends are not directly coupled to lake temperatures and underscores the importance of shortwave radiation for the thermal regime of high-altitude lakes.}}, author = {{Kirillin, Georgiy and Wen, Lijuan and Shatwell, Tom}}, booktitle = {{Hydrology and earth system sciences : HESS }}, issn = {{1607-7938}}, number = {{4}}, pages = {{1895--1909}}, publisher = {{Copernicus GmbH}}, title = {{{Seasonal thermal regime and climatic trends in lakes of the Tibetan highlands}}}, doi = {{10.5194/hess-21-1895-2017}}, volume = {{21}}, year = {{2017}}, } @misc{12241, abstract = {{Climate forecasts project a global increase in extreme weather events, but information on the consequences for ecosystems is scarce. Of particular significance for lakes are severe storms that can influence biogeochemical processes and biological communities by disrupting the vertical thermal structure during periods of stratification. An exceptional storm passing over northern Germany in July 2011 provided an opportunity to assess the consequences and underlying mechanisms of such extreme events on the interplay between the physics and ecological characteristics of a deep, nutrient-poor lake. Wind speeds were among the most extreme on record. A suite of variables measured throughout the event consistently indicates that a cascade of processes pushed the clear-water lake into an exceptionally turbid state. Specifically, thermocline deepening by the storm-entrained cyanobacteria of a deep chlorophyll maximum located at about 8 m depth into the surface mixed layer. Released from light limitation, intense photosynthesis of the cyanobacteria boosted primary production, increased algal biomass, raised the pH and thus induced massive calcite precipitation to a level never observed within three decades of lake monitoring. As a consequence, water transparency dropped from 6.5 to 2.1 m, the minimum on record for 40 years, and the euphotic zone shrank by about 8 m for several weeks. These results show that cyanobacterial blooms not only are promoted by climate warming, but can also be triggered by extreme storms. Clear-water lakes developing a deep chlorophyll maximum appear to be particularly at risk in the future, if such events become more intense or frequent.}}, author = {{Kasprzak, Peter and Shatwell, Tom and Gessner, Mark O. and Gonsiorczyk, Thomas and Kirillin, Georgiy and Selmeczy, Géza and Padisák, Judit and Engelhardt, Christof}}, booktitle = {{Ecosystems}}, issn = {{1435-0629}}, number = {{8}}, pages = {{1407--1420}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-water Lake}}}, doi = {{10.1007/s10021-017-0121-4}}, volume = {{20}}, year = {{2017}}, } @article{3057, author = {{Meier, J. F. and Austermann-Haun, Ute and Fettig, Joachim and Liebe, H. and Wichern, M.}}, journal = {{Water Science & Technology}}, number = {{8}}, pages = {{2065 -- 2074}}, title = {{{Operation of anaerobic filter compared with an anaerobic moving bed bioreactor for the treatment of waste water from hydrothermal carbonization of fine mulch}}}, volume = {{76}}, year = {{2017}}, } @misc{3741, author = {{Fettig, Joachim and Liebe, H. and Busch, A. and Austermann-Haun, Ute and Meier, J. F.}}, publisher = {{Deutsche Bundesstiftung Umwelt}}, title = {{{Entwicklung eines technischen Verwertungs- und Entsorgungskonzeptes für HTC-Prozesswasser}}}, year = {{2017}}, } @proceedings{10634, editor = {{Rubart, Jessica and Yesilada, Yeliz}}, location = {{Prague, Czech Republic}}, publisher = {{CEUR-WS.org}}, title = {{{Hypertext 2017 Extended Proceedings}}}, year = {{2017}}, } @article{5054, author = {{Fettig, Joachim and Pick, Volker and Liebe, H.}}, journal = {{Wat. Sci. Tech.}}, number = {{9}}, pages = {{2056--2063}}, title = {{{Particle separation from road runoff by a decentralised lamella system – laboratory tests and experiences in the field}}}, volume = {{75 }}, year = {{2017}}, } @article{5055, author = {{Meon, G. and Fettig, Joachim and Phuoc, N.V.}}, journal = {{Hydrologie und Wasserbewirtschaftung }}, number = {{6}}, pages = {{368--369}}, title = {{{Forschungskooperation mit Vietnam – das BMBF-Verbundvorhaben EWATEC-COAST}}}, volume = {{61}}, year = {{2017}}, } @misc{7920, author = {{Londong, Jörg and Giese, Thomas and Oldenburg, Martin}}, booktitle = {{Korrespondenz Abwasser}}, issn = {{1866-0010}}, number = {{11}}, pages = {{968 -- 974}}, publisher = {{DWA - Deutsche Vereinigung für Wasserwirtschaft, Abwasser und Abfall e. V.}}, title = {{{KREIS - Ergebnisse für die Übertragbarkeit in die Praxis }}}, year = {{2016}}, } @misc{7924, author = {{Oldenburg, Martin and To, Kieu-Anh}}, booktitle = {{Workshop "Entwicklung von Lernmaterialien für Studierende"}}, location = {{TH Georg Simon Ohm, Nürnberg}}, title = {{{Von Fehlern anderer Lernen }}}, year = {{2016}}, } @misc{12242, abstract = {{Hutchinson and Löffler's (1956) classification of lakes based on the seasonal thermal mixing regime has become a cornerstone of any analysis of lakes as elements of the earth surface. Until now however the lake classification has lacked a physically sound quantitative criterion distinguishing between two fundamental lake types: thermally stratified during a large portion of the year (mono- and dimictic) and predominantly mixed to the bottom (polymictic). Using the mechanistic balance between potential and kinetic energy we review the different formulations of the Richardson number to derive a generalized scaling for seasonal stratification in a closed lake basin. The scaling parameter is the critical mean basin depth, Hcrit, that delineates lakes that mix regularly from those that stratify seasonally based on lake water transparency, lake length, and an annual mean estimate for the Monin-Obukhov length. We validate the scaling on available data of lakes worldwide using logistic regression. The scaling criterion consistently described the mixing regime significantly better than either the conventional unbounded basin scaling or a simple depth threshold. Thus, the generalized scaling is universal for freshwater lakes and allows the seasonal mixing regime to be estimated without numerically solving the heat transport equations.}}, author = {{Kirillin, G. and Shatwell, Tom}}, booktitle = {{Earth-Science Reviews}}, issn = {{0012-8252}}, keywords = {{Richardson number, Lake classification, Seasonal stratification, Dimixis, Polymixis, Water transparency, Lake databases, Lake modeling, Secchi depth}}, pages = {{179--190}}, publisher = {{Elsevier BV}}, title = {{{Generalized scaling of seasonal thermal stratification in lakes}}}, doi = {{10.1016/j.earscirev.2016.08.008}}, volume = {{161}}, year = {{2016}}, } @misc{12243, abstract = {{Water transparency affects the thermal structure of lakes and within certain lake depth ranges, it can determine whether a lake mixes regularly (polymictic regime) or stratifies continuously (dimictic regime) from spring through summer. Phytoplankton biomass can influence transparency but the effect of its seasonal pattern on stratification is unknown. Therefore we analysed long term field data from two lakes of similar depth, transparency and climate but one polymictic and one dimictic and simulated a conceptual lake with a hydrodynamic model. Transparency in the study lakes was typically low during spring and summer blooms and high in between during the clear water phase (CWP), caused when zooplankton graze the spring bloom. The effect of variability of transparency on thermal structure was stronger at intermediate transparency and stronger during a critical window in spring when the rate of lake warming is highest. Whereas the spring bloom strengthened stratification in spring, the CWP weakened it in summer. The presence or absence of the CWP influenced stratification duration and under some conditions determined the mixing regime. Therefore seasonal plankton dynamics, including biotic interactions that suppress the CWP, can influence lake temperatures, stratification duration and potentially also the mixing regime.}}, author = {{Shatwell, Tom and Adrian, Rita and Kirillin, Georgiy}}, booktitle = {{Scientific Reports}}, issn = {{2045-2322}}, number = {{1}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Planktonic events may cause polymictic-dimictic regime shifts in temperate lakes}}}, doi = {{10.1038/srep24361}}, volume = {{6}}, year = {{2016}}, } @book{3762, abstract = {{Das vorliegende Buch vermittelt die Grundlagen zur Berechnung von Kälteanlagen und Wärmepumpen. Hierzu zählen - die Bemessung von Kühllasten, - die Auswahl von Verfahren und Kältemitteln und - die Berechnung der erforderlichen Komponenten. Zusammenhänge werden verständlich hergeleitet und anhand eingehender Praxisbeispiele erörtert. Die Gliederung des Buches folgt einer klaren didaktischen Linie. Aus dem Abkühlverhalten verschiedener Stoffe wird auf Kälteverfahren unterschiedlicher Komplexität und schließlich auf das Thema Wärmeübertragung übergeleitet. Der Schwierigkeitsgrad der basierenden thermodynamischen Konzepte wird dabei stufenweise gesteigert. Das Buch eignet sich daher auch zum Selbststudium.}}, author = {{Dohmann, Joachim}}, isbn = {{978-3-662-49109-6}}, keywords = {{Kühllast, Atmungswärme, Phasenumwandlung, Kaltgasprozess, Stirling, Kaltdampfprozess, Kälteanlagen, Kaskadenschaltung, Wärmepumpen, Verdampfer, Verflüssiger, Kältekompressor, Kälteträger, Wärmeübertrager, Wärmequellen, Kältetransport, Kälte, Dimensionierung von Anlagen, Projektierung von Anlagen, Spezifizierung von Apparaten}}, pages = {{264}}, publisher = {{Springer Vieweg}}, title = {{{ Thermodynamik der Kälteanlagen und Wärmepumpen : Grundlagen und Anwendungen der Kältetechnik}}}, doi = {{10.1007/978-3-662-49110-2}}, year = {{2016}}, } @proceedings{10635, editor = {{Blustein, Jamie and Herder, Eelco and Rubart, Jessica and Ashman, Helen}}, isbn = {{978-1-4503-4247-6}}, location = {{Halifax, Canada}}, publisher = {{Association for Computing Machinery (ACM)}}, title = {{{Proceedings of the 27th ACM Conference on Hypertext and Social Media (HT'16)}}}, doi = {{10.1145/2914586}}, year = {{2016}}, } @article{5053, abstract = {{Treatment of wastewater from a tannery in Greater Ho Chi Minh City (Vietnam) was investigated on a pilot scale. After pre-treatment by the tannery that included batch-coagulation and sedimentation, the wastewater was treated by dissolved air flotation, a membrane bioreactor (MBR) and granular activated carbon (GAC) for polishing the MBR effluent. The average removal efficiency for organic substances in the MBR was 81% while total nitrogen could only be removed by 36%. The performance of the GAC column could be successfully predicted using adsorption parameters determined in laboratory experiments. A larger proportion of the organics in the MBR effluent was only weakly adsorbable, therefore the usable carbon capacity was limited as confirmed by the modelling approach. The results were used to outline the size of a technical plant with a volumetric loading rate of 3 kg COD/(m3*d) for the MBR and a specific carbon demand of about 1.8 kg/m3.}}, author = {{Fettig, Joachim and Pick, V. and Oldenburg, Martin and Phuoc, N. V.}}, issn = {{2220-1319}}, journal = {{Journal of Water Reuse and Desalination}}, number = {{4}}, pages = {{420--428}}, title = {{{Treatment of tannery wastewater for reuse by physico-chemical processes and a membrane bioreactor}}}, doi = {{10.2166/wrd.2016.036}}, volume = {{7}}, year = {{2016}}, } @misc{12244, abstract = {{In this paper the concept of resilience is discussed on the base of 13 case studies from the German branch of the International Long-Term Ecological Research Program. In the introduction the resilience approach is presented as one possibility to describe ecosystem dynamics. The relations with the concepts of adaptability and ecological integrity are discussed and the research questions are formulated. The focal research objectives are related to the conditions of resilient behaviour of ecosystems, the role of spatio-temporal scales, the differences between short- or long-term dynamics, the basic methodological requirements to exactly define resilience, the role of the reference state and indicators and the suitability of resilience as a management concept. The main part of the paper consists of 13 small case study descriptions, which demonstrate phase transitions and resilient dynamics of several terrestrial and aquatic ecosystems at different time scales. In the discussion, some problems arising from the interpretation of the time series are highlighted and discussed. The topics of discussion are the conceptual challenges of the resilience approach, methodological problems, the role of indicator selection, the complex interactions between different disturbances, the significance of time scales and a comparison of the case studies. The article ends with a conclusion which focuses on the demand to link resilience with adaptability, in order to support the long-term dynamics of ecosystem development.}}, author = {{Müller, F. and Bergmann, M. and Dannowski, R. and Dippner, J.W. and Gnauck, A. and Haase, P. and Jochimsen, Marc C. and Kasprzak, P. and Kröncke, I. and Kümmerlin, R. and Küster, M. and Lischeid, G. and Meesenburg, H. and Merz, C. and Millat, G. and Müller, J. and Padisák, J. and Schimming, C.G. and Schubert, H. and Schult, M. and Selmeczy, G. and Shatwell, Tom and Stoll, S. and Schwabe, M. and Soltwedel, T. and Straile, D. and Theuerkauf, M.}}, booktitle = {{ Ecological indicators : integrating monitoring, assessment and management}}, issn = {{1872-7034}}, keywords = {{Long-term ecological research, LTER, Ecosystem resilience and adaptability, Spatio-temporal scales, Indicator selection}}, number = {{6}}, pages = {{10--43}}, publisher = {{Elsevier BV}}, title = {{{Assessing resilience in long-term ecological data sets}}}, doi = {{10.1016/j.ecolind.2015.10.066}}, volume = {{65}}, year = {{2015}}, } @misc{12245, abstract = {{Rewetting of long-term drained fens often results in the formation of eutrophic shallow lakes with an average water depth of less than 1 m. This is accompanied by a fast vegetation shift from cultivated grasses via submerged hydrophytes to helophytes. As a result of rapid plant dying and decomposition, these systems are highly dynamic wetlands characterised by a high mobilisation of nutrients and elevated emissions of CO2 and CH4. However, the impact of specific plant species on these phenomena is not clear. Therefore we investigated the CO2 and CH4 production due to the subaqueous decomposition of shoot biomass of five selected plant species which represent different rewetting stages (Phalaris arundinacea, Ceratophyllum demersum, Typha latifolia, Phragmites australis and Carex riparia) during a 154 day mesocosm study. Beside continuous gas flux measurements, we performed bulk chemical analysis of plant tissue, including carbon, nitrogen, phosphorus and plant polymer dynamics. Plant-specific mass losses after 154 days ranged from 25% (P. australis) to 64% (C. demersum). Substantial differences were found for the CH4 production with highest values from decomposing C. demersum (0.4 g CH4 kg−1 dry mass day) that were about 70 times higher than CH4 production from C. riparia. Thus, we found a strong divergence between mass loss of the litter and methane production during decomposition. If C. demersum as a hydrophyte is included in the statistical analysis solely nutrient contents (nitrogen and phosphorus) explain varying greenhouse gas production of the different plant species while lignin and polyphenols demonstrate no significant impact at all. Taking data of annual biomass production as important carbon source for methanogens into account, high CH4 emissions can be expected to last several decades as long as inundated and nutrient-rich conditions prevail. Different restoration measures like water level control, biomass extraction and top soil removal are discussed in the context of mitigation of CH4 emissions from rewetted fens.}}, author = {{Zak, D. and Reuter, H. and Augustin, J. and Shatwell, Tom and Barth, M. and Gelbrecht, J. and McInnes, R. J.}}, booktitle = {{Biogeosciences}}, issn = {{1726-4189}}, number = {{8}}, pages = {{2455--2468}}, publisher = {{Copernicus GmbH}}, title = {{{Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts }}}, doi = {{10.5194/bg-12-2455-2015}}, volume = {{12}}, year = {{2015}}, } @article{3094, author = {{Fettig, Joachim and Austermann-Haun, Ute and Liebe, H. and Meier, J. F. and Wichern, M.}}, journal = {{KA Korrespondenz Abwasser Abfall}}, number = {{6}}, pages = {{529 -- 536}}, title = {{{Ein Konzept zur Behandlung von Prozesswässern aus der Hydrothermalen Carbonisierung }}}, volume = {{62}}, year = {{2015}}, } @article{5052, author = {{Fettig, Joachim and Liebe, H.}}, journal = {{Wat. Sci. Tech. }}, number = {{1}}, pages = {{77--83}}, title = {{{Modelling GAC adsorption of biologically pre-treated process water from hydrothermal carbonization}}}, volume = {{72}}, year = {{2015}}, } @misc{12246, abstract = {{In lakes, trophic change and climate change shift the relationship between nutrients and physical factors, like temperature and photoperiod, and interactions between these factors should affect the growth of phytoplankton species differently. We therefore determined the relationship between P-limited specific growth rates and P-quota (biovolume basis) of Stephanodiscus minutulus and Nitzschia acicularis (diatoms) at or near light saturation in axenic, semi-continuous culture at 10, 15 and 20 °C and at 6, 9 and 12 h d−1 photoperiod. Photoperiod treatments were performed at constant daily light exposure to allow comparison. Under these conditions, we also performed competition experiments and estimated relative P-uptake rates of the species. Temperature strongly affected P-limited growth rates and relative P uptake rates, whereas photoperiod only affected maximum growth rates. S. minutulus used internal P more efficiently than N. acicularis. N. acicularis was the superior competitor for P due to a higher relative uptake rate and its superiority increased with increasing temperature and photoperiod. S. minutulus conformed to the Droop relationship but N. acicularis did not. A model with a temperature-dependent normalised half-saturation coefficient adequately described the factor interactions of both species. The temperature dependence of the quota model reflected each species’ specific adaptation to its ecological niche. The results demonstrate that increases in temperature or photoperiod can partially compensate for a decrease in P-quota under moderately limiting conditions, like during spring in temperate lakes. Thus warming may counteract de-eutrophication to some degree and a relative shift in growth factors can influence the phytoplankton species composition.}}, author = {{Shatwell, Tom and Köhler, Jan and Nicklisch, Andreas}}, booktitle = {{PLoS ONE}}, issn = {{1932-6203}}, number = {{7}}, publisher = {{Public Library of Science (PLoS)}}, title = {{{Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms}}}, doi = {{10.1371/journal.pone.0102367}}, volume = {{9}}, year = {{2014}}, } @article{5038, author = {{Büdicker, K. and Deister, U. and Fettig, Joachim and Glinka, U. and Götz, M. and Rudolph, B.}}, journal = {{VDI UmweltMagazin }}, pages = {{3}}, title = {{{10 Jahre Treffen der Umwelttechnikstudiengänge}}}, volume = {{44}}, year = {{2014}}, } @inbook{5061, author = {{Fettig, Joachim and Pick, Volker}}, booktitle = {{Contributions by EWATEC-COAST to 4th International Conference for Environment and National Resources, ICENR 2014}}, editor = {{Meon, G.}}, pages = {{194--203}}, publisher = {{Cuvillier}}, title = {{{Treatment of Tannery Wastewater by Enhanced Biological Processes – Preliminary Results}}}, year = {{2014}}, } @misc{12247, abstract = {{When severely degraded fens are rewetted, they often become shallow lakes with an average water depth of less than 1 m. The additional high nutrient availability in highly decomposed peat soils of these newly formed ecosystems favours the fast establishment of a small number of helophytes while the return of lost target species like low sedges and brown mosses could be delayed for decades. We hypothesise that the phosphorus (P) uptake of the newly developed vegetation substantially influences the P cycle in rewetted fens. Therefore, we investigated how much of the P released in upper degraded peat soils is pumped across the redox-interface between the soil and surface water (=‘P barrier’) during the growing season (∼150 days) by six helophytes (Phragmites australis, Typha latifolia, Glyceria maxima, Carex acutiformis, Carex riparia, and Phalaris arundinacea) in five rewetted fens. We then assessed how this would affect the different plant-available P fractions in the rooted degraded peat layers. The highest P uptake during the growing season (duration 150 days from May to September) was recorded for T. latifolia and G. maxima (3.0 and 2.8 g m−2, respectively). Overall, the P uptake was in the range of the P mobilisation rates we measured in highly decomposed peat soils (range: 0.8–15.6 g P m−2, n = 30), but four to 10-fold higher than diffusive net P fluxes at the interface between soil and surface water. Accordingly, helophytes are able to compensate for the high P mobilisation in degraded peat soils during the growing season, by incorporating this P into biomass. On the other hand a large part of the plant-P stock is released after die back through leaching and mineralisation, which increases the P load of these newly formed shallow lakes and possibly also of adjacent water courses. We estimated that it would still take 20–50 years to exhaust the large pool of plant-available P in highly decomposed peat soils if aboveground biomass was removed. Without any further management apart from fen rewetting it is unlikely that the fens will return to low nutrient levels within a human life time.}}, author = {{Zak, Dominik and Gelbrecht, Jörg and Zerbe, Stefan and Shatwell, Tom and Barth, Martin and Cabezas, Alvaro and Steffenhagen, Peggy}}, booktitle = {{Ecological Engineering}}, issn = {{0925-8574}}, keywords = {{Leaching, Phosphorus retention, Phragmites australis, Top soil removal, Redox interface, Rewetting}}, number = {{5}}, pages = {{82--90}}, publisher = {{Elsevier BV}}, title = {{{How helophytes influence the phosphorus cycle in degraded inundated peat soils – Implications for fen restoration}}}, doi = {{10.1016/j.ecoleng.2013.10.003}}, volume = {{66}}, year = {{2013}}, } @misc{12248, abstract = {{Diatoms often dominate temperate lakes and rivers in spring, when increasing temperature and daylength coincide with decreasing silicate concentrations. Since interactions between these factors may be important, we cultivated Stephanodiscus minutulus and Nitzschia acicularis (freshwater diatoms) under silicon limitation at different temperatures and photoperiods in continuous and batch culture. The Monod parameters of Si-limited growth indicated that S. minutulus should be superior under Si limitation. The type of interaction between silicate, temperature and photoperiod differed between species and indicated that the advantage of S. minutulus increases under low temperatures and photoperiods. Competition experiments in semicontinuous culture confirmed these predictions and were described accurately with a model of factor interactions. Multiple regression analysis of field data from a shallow eutrophic lake showed that dissolved silicate (DSi), temperature, photoperiod and total phosphorus (TP) were the most important predictors of spring centric diatom biovolume, where lower temperatures and photoperiods favour this group and higher biovolumes coincide with DSi depletion and higher TP. Pennate diatoms depended more on light, winter population size and grazer abundance. Conditions in situ suggested that factor interactions play a role during spring under strong Si limitation. We propose that the type of interaction reflects specific niche adaptation. Understanding interactions between physical factors and nutrients will increase our understanding of phytoplankton diversity and predictive accuracy of phytoplankton dynamics including combined effects of climate and trophic change.}}, author = {{Shatwell, Tom and Köhler, Jan and Nicklisch, Andreas}}, booktitle = {{Journal of Plankton Research}}, issn = {{1464-3774}}, number = {{5}}, pages = {{957--971}}, publisher = {{Oxford University Press (OUP)}}, title = {{{Temperature and photoperiod interactions with silicon-limited growth and competition of two diatoms}}}, doi = {{10.1093/plankt/fbt058}}, volume = {{35}}, year = {{2013}}, } @misc{12249, abstract = {{We investigated the combined effects of thermal pollution from a nuclear power plant (NPP) and regional climate warming on the thermal regime of a lake. For this purpose, we used the lake model FLake and analyzed 50 years of temperature data from Lake Stechlin, Germany, which served as the cooling water reservoir for the Rheinsberg NPP from 1966 until 1990. Both modeling and statistical data analysis revealed a strong influence of the NPP cooling water discharge on the lake water temperatures and the vertical stability of the water column. A remarkable effect of thermal pollution consisted of strong vertical mixing in winter produced by the discharge of warm water into the lake when ambient water temperatures were below 4 °C. This effect caused a significant increase in the deep hypolimnion temperatures and a corresponding decrease of the vertical stability in the summer. In turn, climate warming had the opposite effect on the summer stability by increasing lake surface temperatures. Both the thermal pollution and climate change increased the duration of the summer stratification period. Our results suggest that industrial thermal pollution in temperate lakes during winter is stored in the deep water column until the next winter, whereas heat added in the summer dissipates relatively rapidly into the atmosphere. Accordingly, the winter thermal pollution could have a long-lasting effect on the lake ecology by affecting benthic biogeochemical processes.}}, author = {{Kirillin, Georgiy and Shatwell, Tom and Kasprzak, Peter}}, booktitle = {{Journal of Hydrology}}, issn = {{1879-2707}}, keywords = {{Industrial thermal pollution, Global warming, Lake stratification, FLake model}}, number = {{7}}, pages = {{47--56}}, publisher = {{Elsevier BV}}, title = {{{Consequences of thermal pollution from a nuclear plant on lake temperature and mixing regime}}}, doi = {{10.1016/j.jhydrol.2013.05.023}}, volume = {{496}}, year = {{2013}}, } @article{3059, author = {{Fettig, Joachim and Pick, Volker and Austermann-Haun, Ute and Blumberg, M. and Phuoc, N. V.}}, journal = {{Water Science & Technology}}, number = {{6}}, pages = {{1264 -- 1270}}, title = {{{Treatment of tapioca starch wastewater by a novel combination of physical and biological processes}}}, volume = {{68}}, year = {{2013}}, } @inproceedings{3103, author = {{Austermann-Haun, Ute and Meier, J. F. and Wichern, M. and Fettig, Joachim Hans Otto and Liebe, H.}}, booktitle = {{IndustrieTage – Wassertechnik - Tagungsband}}, location = {{Fulda}}, pages = {{37 -- 47}}, title = {{{Anaerobe Behandlung von Prozesswässern aus der Hydrothermalen Carbonisierung}}}, year = {{2013}}, } @misc{3745, author = {{Fettig, Joachim and Liebe, H. and Austermann-Haun, Ute and Meier, J. F.}}, publisher = {{Deutsche Bundesstiftung Umwelt}}, title = {{{Verwertung des Prozesswassers aus der hydrothermalen Carbonisierung von organischen Abfällen}}}, year = {{2013}}, } @inbook{5036, author = {{Fettig, Joachim and Liebe, H.}}, booktitle = {{Initiativen zum Umweltschutz}}, editor = {{Grimm, C.}}, pages = {{115--130}}, publisher = {{Erich-Schmidt-Verlag}}, title = {{{Analytik und physikalisch-chemische Behandlung von Prozesswässern aus der hydrothermalen Carbonisierung von organischen Abfällen – erste Ergebnisse}}}, volume = {{87}}, year = {{2013}}, } @inproceedings{5037, author = {{Meon, G. and Le, T.T.H. and Fettig, Joachim and Nguyen, P.}}, location = {{Ho Chi Minh City}}, title = {{{Water pollution management in the vicinity of the Lower Mekong Basin: German-Vietnamese research projects “TAPIOCA” and “EWATEC-Coast” }}}, year = {{2013}}, } @misc{12250, abstract = {{We measured specific growth rates of Stephanodiscus minutulus, Nitzschia acicularis (diatoms), and Limnothrix redekei (cyanobacterium) under fluctuating and constant light in semi-continuous culture at 10°C, 15°C, and 20°C and under photoperiods of 6 h d−1 and 12 h d−1. Fluctuating light regimes simulated regular vertical mixing in lakes with a ratio of euphotic to mixed depth (zeu : zmix) of 1 and 0.5 on a cloudless day. Light fluctuations at zeu : zmix = 1 decreased the growth rates of S. minutulus, N. acicularis, and L. redekei by 18%, 33%, and 29%, respectively, compared to constant light at the same daily light supply. Temperature had no effect on this decrease. Halving zeu : zmix (simulating deep mixing) had the same effect on growth as halving the photoperiod, demonstrating that these factors are cumulative. We introduce a simple empirical factor to adjust growth rates measured under constant light to account for fluctuating light. This factor is independent of temperature and photoperiod, applies over a range of zeu : zmix, and accurately describes present and published growth rates of several species. We show how to account for temporal variability of the light supply at different temperatures and photoperiods when predicting growth rates of phytoplankton.}}, author = {{Shatwell, Tom and Nicklisch, Andreas and Köhler, Jan}}, booktitle = {{Limnology and Oceanography}}, issn = {{0024-3590}}, number = {{2}}, pages = {{541--553}}, publisher = {{Wiley}}, title = {{{Temperature and photoperiod effects on phytoplankton growing under simulated mixed layer light fluctuations}}}, doi = {{10.4319/lo.2012.57.2.0541}}, volume = {{57}}, year = {{2012}}, } @article{5035, author = {{Deister, U.K. and Büdicker, K. and Fettig, Joachim and Glinka, U. and Götz, M. and Hass, V.C. and Mennerich, A. and Rudolph, B. and Scheffold, K. and Wolfertz, R.}}, journal = {{Die Neue Hochschule }}, number = {{1}}, pages = {{6--12}}, title = {{{Forschendes Lernen und Lehren in der Umwelttechnik}}}, year = {{2012}}, } @inproceedings{3106, author = {{Pick, V. and Fettig, Joachim and Austermann-Haun, Ute and Fabritius, B. and Stein, A. and Blumberg, M. and van Phunoc, N.}}, booktitle = {{IndustrieTage – Wassertechnik - Tagungsband}}, location = {{Frankfurt}}, pages = {{140 -- 147}}, title = {{{Eine neue Verfahrenskombination zur Reinigung von Stärkeabwasser in Vietnam}}}, year = {{2011}}, } @inbook{5031, author = {{Ramke, Hans-Günter and Blöhse, D. and Lehmann, Hans-Joachim and Fettig, Joachim}}, booktitle = {{Tagungsband, 22. Kasseler Abfall- und Bioenergieforum}}, location = {{Witzenhausen}}, pages = {{141--157}}, title = {{{Hydrothermale Carbonisierung organischer Siedlungsabfälle}}}, year = {{2010}}, } @inbook{5032, author = {{Wehnert, J. and Schulte-Ebbert, U. and Schlett, C. and Willme, U. and Zullei-Seibert, N. and Fettig, Joachim}}, booktitle = {{Tagungsband, Jahrestagung der Wasserchemischen Gesellschaft}}, location = {{Bayreuth}}, pages = {{258--262}}, title = {{{Orientierende Untersuchungen zum Rückhalt von EDTA, Carbamazepin und Amidotrizoesäure an verschiedenen Austauscher-/Adsorbermaterialien}}}, year = {{2010}}, } @article{5033, author = {{Fettig, Joachim}}, journal = {{Int. Rev. Appl. Sci. Eng.}}, number = {{1-2}}, pages = {{51--54}}, title = {{{Drinking Water Quality and Protection of Resources}}}, volume = {{1}}, year = {{2010}}, } @inproceedings{5034, author = {{Lorenz, M. and Le, T.T.H. and Pick, Volker and Meon, G. and Fettig, Joachim}}, location = {{Kiel}}, title = {{{Simulation of non-point pollution and reduction of water pollution in Tay Ninh catchment in Vietnam}}}, year = {{2010}}, } @inproceedings{4186, author = {{Ramke, Hans-Günter and Blöhse, Dennis and Lehmann, Hans-Joachim and Fettig, Joachim}}, booktitle = {{Sardinia 2009: Twelfth International Waste Management and Landfill Symposium}}, editor = {{Cossu, Raffaello and Diaz, Luis F. and Stegmann, Rainer}}, location = {{ S. Margherita di Pula (Cagliari), Sardinia, Italy}}, publisher = {{CISA Publisher}}, title = {{{Hydrothermal Carbonization of Organic Waste}}}, year = {{2009}}, } @misc{12252, abstract = {{Global climate change alters the relationship between temperature and light in aquatic ecosystems, which is expected to affect the success of different phytoplankton species. To examine this, the interactions between temperature, photoperiod and light exposure (LE) (integral daily light supply) on specific growth rates were analysed for Limnothrix redekei, Planktothrix agardhii (cyanobacteria), Nitzschia acicularis and Stephanodiscus minutulus (diatoms). A model of factor interactions was developed based on new (P. agardhii and St. minutulus) and previously published laboratory studies. It describes the measured data with high precision. Temperature and photoperiod affect the parameters of the light-growth response curve differently, but these effects are the same for all species. The link between functions for temperature and photoperiod is more species-specific. Using meteorological data, the model developed here was used to study the interplay of these factors during a spring bloom in Lake Müggelsee (Berlin). It was found that while all three factors influenced phytoplankton growth, temperature and photoperiod were more important than LE. Both the intensities of the factors and the interactions between them influenced each species to a different degree. The results may help improve our understanding and ability to predict shifts in phytoplankton communities caused by weather patterns and climate change.}}, author = {{Nicklisch, Andreas and Shatwell, Tom and Kohler, Jan}}, booktitle = {{Journal of Plankton Research}}, issn = {{1464-3774}}, number = {{1}}, pages = {{75--91}}, publisher = {{Oxford University Press (OUP)}}, title = {{{Analysis and modelling of the interactive effects of temperature and light on phytoplankton growth and relevance for the spring bloom}}}, doi = {{10.1093/plankt/fbm099}}, volume = {{30}}, year = {{2007}}, } @inbook{4185, author = {{Fettig, Joachim and Miethe, Manfred and Pick, Volker}}, booktitle = {{Chemical Water and Wastewater Treatment IX}}, editor = {{Hahn, Hermann H. and Hoffmann, Erhard and Hallvard, Odegard}}, pages = {{103--113}}, publisher = {{IWA Publishing}}, title = {{{Decentralised Treatment of Runoff from Traffic Areas – Principles and Practical Aspects}}}, doi = {{10.2166/9781780402079}}, year = {{2007}}, } @misc{8181, author = {{Niederste-Hollenberg, Jutta and Oldenburg, Martin and Weilbeer, Jutta and Weissmann, Heike}}, booktitle = {{Hamburger Berichte zur Siedlungswasserwirtschaft TU}}, editor = {{Meinzinger, F. and Otterpohl, R.}}, location = {{Lübeck}}, pages = {{139--154}}, publisher = {{TU Hamburg-Harburg}}, title = {{{Die Vorklärung als Kohlenstoffsenke - ein Problem?}}}, year = {{2007}}, } @misc{3753, author = {{Austermann-Haun, Ute and Klaerding, Sebastian and Gniffke, Saskia and Fettig, Joachim and Pick, Volker}}, publisher = {{Ministerium für Umwelt und Naturschutz, Landwirtschaft und Verbraucherschutz des Landes Nordrhein-Westfalen}}, title = {{{„Konzeption der Bewirtschaftungsplanung – Teilbereich Punktquellen – zur Umsetzung der EG-Wasserrahmenrichtlinie am Beispiel des Flussgebiets der Werre“}}}, year = {{2007}}, } @proceedings{10636, abstract = {{Any academic conference requires the efforts of many people, from conference committee members to reviewers to authors to attendees. I would like to thank some of the people who helped organize ACM Hypertext 2006 here. Uffe K. Wiil did an excellent job as General Chair, taking care of the lion's share of the budgeting, planning, and organizing, from the hotel selection to the day-to-day logistics. Jessica Rubart was an extremely able and effective co-Program Chair. Niels Olof Bouvin, the Technical Services Chair, worked hard to set up, customize and maintain our review system. Publicity Chair David Millard ensured that word of the conference reached many people.The reviewers this year did an excellent job. We received 41 full paper submissions, of which 12 were accepted. We also received 29 short paper submissions, of which 10 were accepted. As these acceptance rates indicate, we were unable to accept every paper we would have liked. We were particularly pleased to see a large number of papers that spoke to this year's theme of social networks and networking. This pays tribute to the breadth and flexibility of the community, something that many people note as one of the true strengths of this conference series.ACM Hypertext, as a conference series, is at a crossroads. When Uffe Wiil and I agreed to organize this year's event, we generated a quick preliminary call for papers with the headline "Quo Vadimus?" Looking at the submissions and accepted papers at this year (and, indeed the past several years) conference gives us some idea of how the Hypertext community has changed since the initial workshops of the late 1980's. Understanding this change can help us answer our question about where we are going. I hope we can use this event not only to further our understanding of the research aspects of our community, but also to plot a sustainable course for the future.}}, editor = {{Wiil, Uffe K. and Nürnberg, Peter J. and Rubart, Jessica}}, isbn = {{978-1-59593-417-8}}, location = {{Odense, Denmark}}, publisher = {{Association for Computing Machinery (ACM)}}, title = {{{Proceedings of the seventeenth conference on Hypertext and hypermedia (HT'06)}}}, doi = {{10.1145/1149941}}, year = {{2006}}, } @article{4184, author = {{Fassnacht, Axel and Fettig, Joachim and Lendt, Benno and Mundus, B.}}, issn = {{1436-6134}}, journal = {{DVGW energie | wasser-praxis}}, number = {{4}}, pages = {{38--42}}, publisher = {{Wirtschafts- und Verlagsgesellschaft Gas und Wasser}}, title = {{{Bachelor- und Masterstudiengänge an Fachhochschulen}}}, volume = {{56}}, year = {{2005}}, } @inbook{8107, author = {{Oldenburg, Martin}}, booktitle = {{Betriebs- und Regenwassernutzung - Bestandsaufnahme und Zukunftsvision}}, isbn = {{3-9804111-9-2}}, pages = {{107--118}}, title = {{{Möglichkeiten der Betriebs- und Regenwassernutzung im Rahmen von neuen Sanitärkonzepten}}}, year = {{2005}}, } @article{4175, abstract = {{{The environmental labour market in the Czech Republic, Germany, Italy, Sweden and the Netherlands was evaluated by analysing up to 120 job advertisements in each country. The conditions and requirements were grouped into 11 categories showing clear similarities and differences between the five countries. Further evaluation of the data gives evidence that the private sector plays a significant role for technical environmental professionals in Europe. As a central task, conclusions regarding degree and knowledge requirements, respectively, and the importance of a variety of skills are drawn. Suggestions are made how the findings can be accounted for in environmental curricula. Furthermore the role of networks for the graduates' entry into the labour market is emphazised.}}}, author = {{Fettig, Joachim}}, issn = {{0273-1223}}, journal = {{Water Science and Technology}}, keywords = {{Environmental curricula, knowledge requirements, labour market, professional skills}}, number = {{8}}, pages = {{109--116}}, publisher = {{IWA Publishing}}, title = {{{Some aspects of the environmental labour market in five European countries and conclusions with respect to environmental curricula}}}, doi = {{10.2166/wst.2004.0500}}, volume = {{49}}, year = {{2004}}, } @article{4176, abstract = {{Ingenieurstudium - Die neuen Abschlüsse Bachelor und Master werden in Deutschland auch in den Ingenieurwissenschaften die Diplomabschlüsse ablösen. Zu den Veränderungen in der Hochschulausbildung besteht in der Wirtschaft noch erheblicher Informationsbedarf. }}, author = {{Fettig, Joachim and Lendt, Benno and Merkl, Gerhard and Fassnacht, Axel}}, issn = {{0016-3651}}, journal = {{GWF Wasser, Abwasser}}, keywords = {{Ingenieurstudium, Bachelor-Abschluss, Master-Abschluss, Bologna-Erklärung}}, number = {{10}}, pages = {{696--699}}, publisher = {{Vulkan-Verlag GmbH}}, title = {{{Bachelor und Master in den Ingenieurstudiengängen}}}, volume = {{145}}, year = {{2004}}, } @article{4171, abstract = {{For 11 years, the Division of Applied Science, University of Paderborn, has offered a four‐year undergraduate technical environmental protection course. More than 500 graduates have completed the programme so far. By means of regular surveys, the job situations of the graduates are evaluated, and feedback about the strengths and weaknesses of the education is requested. In addition, the faculty members keep in close contact with potential employers by supervising students during their professional practical training and by joint projects. The results of this exchange of information and ideas with respect to the professional situation and perspective are described.}}, author = {{Fettig, Joachim and Henne, Karl-Heinz and Maßmeyer, Klaus}}, issn = {{1467-6370}}, journal = {{International Journal of Sustainability in Higher Education}}, number = {{1}}, pages = {{67--74}}, publisher = {{MCB UP Ltd }}, title = {{{A technical environmental protection curriculum in Germany: Intentions, acceptance and future improvements}}}, doi = {{10.1108/14676370210414182}}, volume = {{3}}, year = {{2002}}, } @article{5028, author = {{Fettig, Joachim and Pick, Volker and Miethe, Manfred and Strüber, K.}}, journal = {{KA Wasserwirtschaft, Abwasser, Abfall }}, number = {{3}}, pages = {{312--320}}, title = {{{Dezentrale Behandlung des Niederschlagsabflusses von Verkehrsflächen in einer mehrstufigen Schachtfilteranlage}}}, volume = {{49}}, year = {{2002}}, } @article{3352, author = {{Müller, Ulrich and Dohmann, Joachim}}, journal = {{Lebensmitteltechnik}}, number = {{10}}, title = {{{Optimale Temperaturen fahren - Entwicklungen in der Kältetechnik}}}, volume = {{32}}, year = {{2000}}, } @misc{3769, abstract = {{Mit polyhalogenierten aromatischen Kohlenwasserstoffen und flüchtigen anorganischen Stoffen kontaminierte Feststoffe werden unter Sauerstoffmangelbedingungen erhitzt und anschließend gekühlt. Die bei der Erhitzung entstehenden Brüden werden abgesaugt und mit einer kälteren Quenchflüssigkeit in Kontakt gebracht. Ein Teilstrom dieser Quenchflüssigkeit wird aus dem System ausgeschleust.}}, author = {{Dohmann, Joachim}}, title = {{{Verfahren zur Behandlung von kontaminierten Feststoffen }}}, year = {{2000}}, } @article{3770, abstract = {{Die Leistung der Feuerung von Müllverbrennungsanlagen ist abhängig vom verbrennenden Müllmassenstrom, vom Heizwert des eingesetzten Mülls und von der Luftzahl, mit der die Feuerung betrieben wird. Aufgrund der stark inhomogenen Zusammensetzung der eingesetzten Abfallbrennstoffe unterliegt dabei der Heizwert größeren Schwankungen, so dass auch die Feuerleistung bei gleichem Müllmassenstrom schwankt. Aus verschiedenen Gründen ist es sinnvoll, die aktuelle Feuerleistung zu ermitteln, etwa zur Regelung der Feuerung, zur Bewertung des Mülls hinsichtlich seines Heizwertes (zum Beispiel für Abrechnungszwecke) und zur Charakterisierung des Feuers (zum Beispiel zum Erkennen einer verzögerten Verbrennung und damit der Akkumulation von unverbranntem Müll). }}, author = {{Dohmann, Joachim and Starke, Cord}}, issn = {{1863-9763}}, journal = {{ Müll und Abfall }}, number = {{9}}, pages = {{528--531}}, publisher = {{Erich Schmidt Verlag}}, title = {{{Ermittlung der Feuerleistung von Müllverbrennungsanlagen }}}, doi = {{10.37307/j.1863-9763.2000.09.01}}, year = {{2000}}, } @misc{3773, author = {{Dohmann, Joachim and Mian, Iqbal Muhammad}}, title = {{{Reaktor zur Vergärung biogener Stoffe}}}, year = {{2000}}, } @misc{3734, author = {{Dohmann, Joachim and Keldenich, Kai and Mian , Iqbal Muhammad}}, title = {{{Aerosolminderung}}}, year = {{1999}}, } @article{3736, abstract = {{Grenzwerte für gasförmige Emissionen aus Müllverbrennungsanlagen sind in Deutschland durch die 17. BImSchV verbindlich festgelegt. In diesem Regelwerk wird die Beladung des Abgases mit organischem Kohlenstoff in der Absicht begrenzt, einen vollständigen chemischen Umsatz der brennbaren Rauchgasbestandteile in der Feuerung sicherzustellen. Ergänzend dazu wird für die im Spurenbereich auftretende Beladung des Abgases mit polychlorierten Dibenzo-p-dioxinen bzw. -furanen (PCDD/F) auf 0,1 ng TE/m3 (i. N. tr) begrenzt. Weitergehende Anforderungen, etwa in Bezug auf andere organische Stoffklassen, werden nicht definiert. Es bestehen keine Vorschriften, die die Beladungen von Rauchgasen mit anderen, möglicherweise toxischen organischen Verbindungen innerhalb der Rauchgasreinigungsanlagen begrenzen. Die Stoffgruppe der PCDD/F steht somit stellvertretend für weitere umweltrelevante organische Stoffe. An der modernen, nach dem Stand der Technik errichteten Rauchgasreinigungsanlage der Müllverbrennungsanlage Bielefeld wurde ein umfangreiches Untersuchungsprogramm mit dem Ziel durchgeführt, Stoffbilanzen für eine Vielzahl organischer Spurenstoffe aufzustellen. Diese Bilanzen erlauben detaillierte Rückschlüsse auf das Verhalten dieser Stoffe innerhalb der Rauchgasreinigungsanlage. }}, author = {{Dohmann, Joachim and Keldenich, Kai and Mian, Iqbal Muhammad and Böske, Jürgen}}, issn = {{ 1863-9763}}, journal = {{Müll und Abfall}}, number = {{9}}, pages = {{556--562}}, publisher = {{Erich Schmidt Verlag}}, title = {{{Organische Spurenstoffe in Müllverbrennungsanlagen }}}, doi = {{10.37307/j.1863-9763.1999.09.04}}, year = {{1999}}, } @misc{3771, abstract = {{Zum Reinigen von Rauchgas, insbesondere aus Müllverbrennungsanlagen, wird dieses Rauchgas in einem Sprühtrockner gekühlt, anschließend entstaubt und in zwei hintereinander geschalteten Wäschern von Halogenwasserstoffen und Schwefeloxiden befreit. Die Waschflüssigkeit oder die Abflutungen der beiden Wäscher werden mit einem Neutralisationsmittel neutralisiert und dem Sprühtrockner zugeführt. Die Abflutung oder die Waschflüssigkeit des ersten Wäschers wird mit einem trockenen Neutralisationsmittel neutralisiert.}}, author = {{Dohmann, Joachim and Mian, Iqbal Muhammad}}, title = {{{Verfahren zum Reinigen von Rauchgas }}}, year = {{1999}}, } @article{3772, author = {{Dohmann, Joachim and Palitzsch, Sylke and Marzi, Thomas and Beckmann, Ralf and Kümmel, Rolf}}, issn = {{1863-9763}}, journal = {{Müll und Abfall}}, number = {{3}}, pages = {{129 -- 136}}, publisher = {{Erich Schmidt Verlag}}, title = {{{Künstliche Alterung - ein wirtschaftlicher Weg zur Verringerung der Schwermetallfreisetzung aus Müllverbrennungsaschen}}}, doi = {{10.37307/j.1863-9763.1999.03.02}}, volume = {{31}}, year = {{1999}}, } @misc{8327, author = {{Dücker, Marita and Müller, Wolfgang and Rubart, Jessica}}, booktitle = {{Proceedings of Symposium on Visual Languages’98}}, isbn = {{0-8186-8712-6}}, issn = {{1049-2615}}, location = {{ Halifax, NS, Canada}}, publisher = {{IEEE}}, title = {{{ VIPspace – A Visually Programmable Shared Workspace}}}, doi = {{10.1109/VL.1998.706150}}, year = {{1998}}, } @misc{3733, author = {{Dohmann, Joachim and Keldenich, Kai}}, pages = {{3}}, title = {{{Absorber}}}, year = {{1998}}, } @article{3735, abstract = {{Using a basic model of the collision process, the major parameters which dominate the disintegration processes are discussed. The observed and described effect of secondary drop dispersion leads to an improvement of atomization and can be used to improve heat and mass transfer performance of technical equipment.}}, author = {{Dohmann, Joachim}}, journal = {{Chemical Engineering \& Technology}}, number = {{4}}, pages = {{341--345}}, title = {{{Dispersion and Coagulation of Droplets in Intersecting Sprays}}}, doi = {{10.1002/(SICI)1521-4125(199804)21:4<341::AID-CEAT341>3.0.CO;2-4}}, volume = {{21}}, year = {{1998}}, } @inproceedings{6528, author = {{Prick, V. and Fettig, Joachim}}, booktitle = {{Abwässer der metallverarbeitenden Industrie - Tagungsband}}, location = {{Bremen}}, pages = {{B3 -- B20}}, title = {{{Rückgewinnung von Aluminium aus Abwasserteilströmen eines metallverarbeitenden Betriebes}}}, year = {{1996}}, } @inbook{6520, author = {{Fettig, Joachim and Ratnaweera, H. and Ødegaard, H.}}, booktitle = {{Chemical Water and Wastewater Treatment}}, editor = {{Hahn, H. H. and Klute, R.}}, pages = {{221 -- 242}}, publisher = {{Springer}}, title = {{{Simultaneous Phosphate Precipitation and Particle Destabilization Using Aluminium Coagulants of Different Basicity}}}, year = {{1990}}, } @article{6494, author = {{Sontheimer, H. and Cornel, P. and Fettig, Joachim and Rohmann, U.}}, journal = {{gwf - Wasser/Abwasser}}, number = {{11}}, pages = {{521 -- 530}}, title = {{{Grundwasserverunreinigungen - Bedrohung für die öffentliche Wasserversorgung?}}}, volume = {{123}}, year = {{1982}}, }