--- _id: '12226' abstract: - lang: eng text: 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. article_number: '23478' author: - first_name: Andreas full_name: Jechow, Andreas last_name: Jechow - first_name: Günther full_name: Schreck, Günther last_name: Schreck - first_name: Christopher C. M. full_name: Kyba, Christopher C. M. last_name: Kyba - first_name: Stella A. full_name: Berger, Stella A. last_name: Berger - first_name: Lukas Thuile full_name: Bistarelli, Lukas Thuile last_name: Bistarelli - first_name: Matthias full_name: Bodenlos, Matthias last_name: Bodenlos - first_name: Mark O. full_name: Gessner, Mark O. last_name: Gessner - first_name: Hans-Peter full_name: Grossart, Hans-Peter last_name: Grossart - first_name: Franziska full_name: Kupprat, Franziska last_name: Kupprat - first_name: Jens C. full_name: Nejstgaard, Jens C. last_name: Nejstgaard - first_name: Andreas full_name: Pansch, Andreas last_name: Pansch - first_name: Armin full_name: Penske, Armin last_name: Penske - first_name: Michael full_name: Sachtleben, Michael last_name: Sachtleben - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Gabriel A. full_name: Singer, Gabriel A. last_name: Singer - first_name: Susanne full_name: Stephan, Susanne last_name: Stephan - first_name: Tim J. W. full_name: Walles, Tim J. W. last_name: Walles - first_name: Sabine full_name: Wollrab, Sabine last_name: Wollrab - first_name: Karolina M. full_name: Zielinska-Dabkowska, Karolina M. last_name: Zielinska-Dabkowska - first_name: Franz full_name: Hölker, Franz last_name: Hölker citation: ama: Jechow A, Schreck G, Kyba CCM, et al. Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large-scale lake enclosure facility. Scientific Reports. 2021;11(1). doi:10.1038/s41598-021-02772-4 apa: Jechow, A., Schreck, G., Kyba, C. C. M., Berger, S. A., Bistarelli, L. T., Bodenlos, M., Gessner, M. O., Grossart, H.-P., Kupprat, F., Nejstgaard, J. C., Pansch, A., Penske, A., Sachtleben, M., Shatwell, T., Singer, G. A., Stephan, S., Walles, T. J. W., Wollrab, S., Zielinska-Dabkowska, K. M., & Hölker, F. (2021). Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large-scale lake enclosure facility. Scientific Reports, 11(1), Article 23478. https://doi.org/10.1038/s41598-021-02772-4 bjps: Jechow A et al. (2021) Design and Implementation of an Illumination System to Mimic Skyglow at Ecosystem Level in a Large-Scale Lake Enclosure Facility. Scientific Reports 11. chicago: Jechow, Andreas, Günther Schreck, Christopher C. M. Kyba, Stella A. Berger, Lukas Thuile Bistarelli, Matthias Bodenlos, Mark O. Gessner, et al. “Design and Implementation of an Illumination System to Mimic Skyglow at Ecosystem Level in a Large-Scale Lake Enclosure Facility.” Scientific Reports 11, no. 1 (2021). https://doi.org/10.1038/s41598-021-02772-4. chicago-de: Jechow, Andreas, Günther Schreck, Christopher C. M. Kyba, Stella A. Berger, Lukas Thuile Bistarelli, Matthias Bodenlos, Mark O. Gessner, u. a. 2021. Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large-scale lake enclosure facility. Scientific Reports 11, Nr. 1. doi:10.1038/s41598-021-02772-4, . din1505-2-1: 'Jechow, Andreas ; Schreck, Günther ; Kyba, Christopher C. M. ; Berger, Stella A. ; Bistarelli, Lukas Thuile ; Bodenlos, Matthias ; Gessner, Mark O. ; Grossart, Hans-Peter ; u. a.: Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large-scale lake enclosure facility. In: Scientific Reports Bd. 11. London, Springer Nature (2021), Nr. 1' havard: A. Jechow, G. Schreck, C.C.M. Kyba, S.A. Berger, L.T. Bistarelli, M. Bodenlos, M.O. Gessner, H.-P. Grossart, F. Kupprat, J.C. Nejstgaard, A. Pansch, A. Penske, M. Sachtleben, T. Shatwell, G.A. Singer, S. Stephan, T.J.W. Walles, S. Wollrab, K.M. Zielinska-Dabkowska, F. Hölker, Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large-scale lake enclosure facility, Scientific Reports. 11 (2021). ieee: 'A. Jechow et al., “Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large-scale lake enclosure facility,” Scientific Reports, vol. 11, no. 1, Art. no. 23478, 2021, doi: 10.1038/s41598-021-02772-4.' mla: Jechow, Andreas, et al. “Design and Implementation of an Illumination System to Mimic Skyglow at Ecosystem Level in a Large-Scale Lake Enclosure Facility.” Scientific Reports, vol. 11, no. 1, 23478, 2021, https://doi.org/10.1038/s41598-021-02772-4. short: A. Jechow, G. Schreck, C.C.M. Kyba, S.A. Berger, L.T. Bistarelli, M. Bodenlos, M.O. Gessner, H.-P. Grossart, F. Kupprat, J.C. Nejstgaard, A. Pansch, A. Penske, M. Sachtleben, T. Shatwell, G.A. Singer, S. Stephan, T.J.W. Walles, S. Wollrab, K.M. Zielinska-Dabkowska, F. Hölker, Scientific Reports 11 (2021). ufg: 'Jechow, Andreas u. a.: Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large-scale lake enclosure facility, in: Scientific Reports 11 (2021), H. 1.' van: Jechow A, Schreck G, Kyba CCM, Berger SA, Bistarelli LT, Bodenlos M, et al. Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large-scale lake enclosure facility. Scientific Reports. 2021;11(1). date_created: 2024-12-08T19:56:12Z date_updated: 2024-12-11T12:59:58Z department: - _id: DEP8022 doi: 10.1038/s41598-021-02772-4 extern: '1' intvolume: ' 11' issue: '1' language: - iso: eng place: London publication: Scientific Reports publication_identifier: eissn: - 2045-2322 publication_status: published publisher: Springer Nature quality_controlled: '1' status: public title: Design and implementation of an illumination system to mimic skyglow at ecosystem level in a large-scale lake enclosure facility type: scientific_journal_article user_id: '83781' volume: 11 year: '2021' ... --- _id: '12227' abstract: - lang: eng text: 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: - first_name: R. Iestyn full_name: Woolway, R. Iestyn last_name: Woolway - first_name: Eleanor full_name: Jennings, Eleanor last_name: Jennings - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Malgorzata full_name: Golub, Malgorzata last_name: Golub - first_name: Don C. full_name: Pierson, Don C. last_name: Pierson - first_name: Stephen C. full_name: Maberly, Stephen C. last_name: Maberly citation: ama: 'Woolway RI, Jennings E, Shatwell T, Golub M, Pierson DC, Maberly SC. Lake heatwaves under climate change. Nature : the international journal of science. 2021;589(7842):402-407. doi:10.1038/s41586-020-03119-1' apa: 'Woolway, R. I., Jennings, E., Shatwell, T., Golub, M., Pierson, D. C., & Maberly, S. C. (2021). Lake heatwaves under climate change. Nature : The International Journal of Science, 589(7842), 402–407. https://doi.org/10.1038/s41586-020-03119-1' bjps: 'Woolway RI et al. (2021) Lake Heatwaves under Climate Change. Nature : the international journal of science 589, 402–407.' chicago: 'Woolway, R. Iestyn, Eleanor Jennings, Tom Shatwell, Malgorzata Golub, Don C. Pierson, and Stephen C. Maberly. “Lake Heatwaves under Climate Change.” Nature : The International Journal of Science 589, no. 7842 (2021): 402–7. https://doi.org/10.1038/s41586-020-03119-1.' chicago-de: 'Woolway, R. Iestyn, Eleanor Jennings, Tom Shatwell, Malgorzata Golub, Don C. Pierson und Stephen C. Maberly. 2021. Lake heatwaves under climate change. Nature : the international journal of science 589, Nr. 7842: 402–407. doi:10.1038/s41586-020-03119-1, .' din1505-2-1: 'Woolway, R. Iestyn ; Jennings, Eleanor ; Shatwell, Tom ; Golub, Malgorzata ; Pierson, Don C. ; Maberly, Stephen C.: Lake heatwaves under climate change. In: Nature : the international journal of science Bd. 589. London, Macmillan Publishers Limited, part of Springer Nature (2021), Nr. 7842, S. 402–407' havard: 'R.I. Woolway, E. Jennings, T. Shatwell, M. Golub, D.C. Pierson, S.C. Maberly, Lake heatwaves under climate change, Nature : The International Journal of Science. 589 (2021) 402–407.' ieee: 'R. I. Woolway, E. Jennings, T. Shatwell, M. Golub, D. C. Pierson, and S. C. Maberly, “Lake heatwaves under climate change,” Nature : the international journal of science, vol. 589, no. 7842, pp. 402–407, 2021, doi: 10.1038/s41586-020-03119-1.' mla: 'Woolway, R. Iestyn, et al. “Lake Heatwaves under Climate Change.” Nature : The International Journal of Science, vol. 589, no. 7842, 2021, pp. 402–07, https://doi.org/10.1038/s41586-020-03119-1.' short: 'R.I. Woolway, E. Jennings, T. Shatwell, M. Golub, D.C. Pierson, S.C. Maberly, Nature : The International Journal of Science 589 (2021) 402–407.' ufg: 'Woolway, R. Iestyn u. a.: Lake heatwaves under climate change, in: Nature : the international journal of science 589 (2021), H. 7842,  S. 402–407.' van: 'Woolway RI, Jennings E, Shatwell T, Golub M, Pierson DC, Maberly SC. Lake heatwaves under climate change. Nature : the international journal of science. 2021;589(7842):402–7.' date_created: 2024-12-08T19:57:44Z date_updated: 2024-12-11T12:57:18Z department: - _id: DEP8022 doi: 10.1038/s41586-020-03119-1 extern: '1' intvolume: ' 589' issue: '7842' language: - iso: eng main_file_link: - url: https://doi.org/10.1038/s41586-020-03119-1 page: 402-407 place: London publication: 'Nature : the international journal of science' publication_identifier: eissn: - 1476-4687 issn: - 0028-0836 publication_status: published publisher: 'Macmillan Publishers Limited, part of Springer Nature ' quality_controlled: '1' status: public title: Lake heatwaves under climate change type: scientific_journal_article user_id: '83781' volume: 589 year: '2021' ... --- _id: '12228' abstract: - lang: eng text: 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: - first_name: Georgiy B full_name: Kirillin, Georgiy B last_name: Kirillin - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Lijuan full_name: Wen, Lijuan last_name: Wen citation: ama: Kirillin GB, Shatwell T, Wen L. Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors. Geophysical Research Letters. 2021;48(14). doi:10.1029/2021gl093429 apa: Kirillin, G. B., Shatwell, T., & Wen, L. (2021). Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors. Geophysical Research Letters, 48(14). https://doi.org/10.1029/2021gl093429 bjps: Kirillin GB, Shatwell T and Wen L (2021) Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors. Geophysical Research Letters 48. chicago: Kirillin, Georgiy B, Tom Shatwell, and Lijuan Wen. “Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors.” Geophysical Research Letters 48, no. 14 (2021). https://doi.org/10.1029/2021gl093429. chicago-de: Kirillin, Georgiy B, Tom Shatwell und Lijuan Wen. 2021. Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors. Geophysical Research Letters 48, Nr. 14. doi:10.1029/2021gl093429, . din1505-2-1: 'Kirillin, Georgiy B ; Shatwell, Tom ; Wen, Lijuan: Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors. In: Geophysical Research Letters Bd. 48. Hoboken, NJ, Wiley (2021), Nr. 14' havard: G.B. Kirillin, T. Shatwell, L. Wen, Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors, Geophysical Research Letters. 48 (2021). ieee: 'G. B. Kirillin, T. Shatwell, and L. Wen, “Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors,” Geophysical Research Letters, vol. 48, no. 14, 2021, doi: 10.1029/2021gl093429.' mla: Kirillin, Georgiy B., et al. “Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors.” Geophysical Research Letters, vol. 48, no. 14, 2021, https://doi.org/10.1029/2021gl093429. short: G.B. Kirillin, T. Shatwell, L. Wen, Geophysical Research Letters 48 (2021). ufg: 'Kirillin, Georgiy B./Shatwell, Tom/Wen, Lijuan: Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors, in: Geophysical Research Letters 48 (2021), H. 14.' van: Kirillin GB, Shatwell T, Wen L. Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors. Geophysical Research Letters. 2021;48(14). date_created: 2024-12-08T19:59:08Z date_updated: 2024-12-11T08:34:29Z department: - _id: DEP8022 doi: 10.1029/2021gl093429 extern: '1' intvolume: ' 48' issue: '14' keyword: - alpine lakes - extreme environments - ake-atmosphere interaction - lake ice - radiatively driven convection - winter limnology language: - iso: eng place: Hoboken, NJ publication: Geophysical Research Letters publication_identifier: eissn: - 1944-8007 issn: - 0094-8276 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: Ice‐Covered Lakes of Tibetan Plateau as Solar Heat Collectors type: scientific_journal_article user_id: '83781' volume: 48 year: '2021' ... --- _id: '12229' abstract: - lang: eng text: 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. article_number: '2318' author: - first_name: R. Iestyn full_name: Woolway, R. Iestyn last_name: Woolway - first_name: Sapna full_name: Sharma, Sapna last_name: Sharma - first_name: Gesa A. full_name: Weyhenmeyer, Gesa A. last_name: Weyhenmeyer - first_name: Andrey full_name: Debolskiy, Andrey last_name: Debolskiy - first_name: Malgorzata full_name: Golub, Malgorzata last_name: Golub - first_name: Daniel full_name: Mercado-Bettín, Daniel last_name: Mercado-Bettín - first_name: Marjorie full_name: Perroud, Marjorie last_name: Perroud - first_name: Victor full_name: Stepanenko, Victor last_name: Stepanenko - first_name: Zeli full_name: Tan, Zeli last_name: Tan - first_name: Luke full_name: Grant, Luke last_name: Grant - first_name: Robert full_name: Ladwig, Robert last_name: Ladwig - first_name: Jorrit full_name: Mesman, Jorrit last_name: Mesman - first_name: Tadhg N. full_name: Moore, Tadhg N. last_name: Moore - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Inne full_name: Vanderkelen, Inne last_name: Vanderkelen - first_name: Jay A. full_name: Austin, Jay A. last_name: Austin - first_name: Curtis L. full_name: DeGasperi, Curtis L. last_name: DeGasperi - first_name: Martin full_name: Dokulil, Martin last_name: Dokulil - first_name: Sofia full_name: La Fuente, Sofia last_name: La Fuente - first_name: Eleanor B. full_name: Mackay, Eleanor B. last_name: Mackay - first_name: S. Geoffrey full_name: Schladow, S. Geoffrey last_name: Schladow - first_name: Shohei full_name: Watanabe, Shohei last_name: Watanabe - first_name: Rafael full_name: Marcé, Rafael last_name: Marcé - first_name: Don C. full_name: Pierson, Don C. last_name: Pierson - first_name: Wim full_name: Thiery, Wim last_name: Thiery - first_name: Eleanor full_name: Jennings, Eleanor last_name: Jennings citation: ama: Woolway RI, Sharma S, Weyhenmeyer GA, et al. Phenological shifts in lake stratification under climate change. Nature Communications. 2021;12(1). doi:10.1038/s41467-021-22657-4 apa: Woolway, R. I., Sharma, S., Weyhenmeyer, G. A., Debolskiy, A., Golub, M., Mercado-Bettín, D., Perroud, M., Stepanenko, V., Tan, Z., Grant, L., Ladwig, R., Mesman, J., Moore, T. N., Shatwell, T., Vanderkelen, I., Austin, J. A., DeGasperi, C. L., Dokulil, M., La Fuente, S., … Jennings, E. (2021). Phenological shifts in lake stratification under climate change. Nature Communications, 12(1), Article 2318. https://doi.org/10.1038/s41467-021-22657-4 bjps: Woolway RI et al. (2021) Phenological Shifts in Lake Stratification under Climate Change. Nature Communications 12. chicago: Woolway, R. Iestyn, Sapna Sharma, Gesa A. Weyhenmeyer, Andrey Debolskiy, Malgorzata Golub, Daniel Mercado-Bettín, Marjorie Perroud, et al. “Phenological Shifts in Lake Stratification under Climate Change.” Nature Communications 12, no. 1 (2021). https://doi.org/10.1038/s41467-021-22657-4. chicago-de: Woolway, R. Iestyn, Sapna Sharma, Gesa A. Weyhenmeyer, Andrey Debolskiy, Malgorzata Golub, Daniel Mercado-Bettín, Marjorie Perroud, u. a. 2021. Phenological shifts in lake stratification under climate change. Nature Communications 12, Nr. 1. doi:10.1038/s41467-021-22657-4, . din1505-2-1: 'Woolway, R. Iestyn ; Sharma, Sapna ; Weyhenmeyer, Gesa A. ; Debolskiy, Andrey ; Golub, Malgorzata ; Mercado-Bettín, Daniel ; Perroud, Marjorie ; Stepanenko, Victor ; u. a.: Phenological shifts in lake stratification under climate change. In: Nature Communications Bd. 12. London, Springer Nature (2021), Nr. 1' havard: R.I. Woolway, S. Sharma, G.A. Weyhenmeyer, A. Debolskiy, M. Golub, D. Mercado-Bettín, M. Perroud, V. Stepanenko, Z. Tan, L. Grant, R. Ladwig, J. Mesman, T.N. Moore, T. Shatwell, I. Vanderkelen, J.A. Austin, C.L. DeGasperi, M. Dokulil, S. La Fuente, E.B. Mackay, S.G. Schladow, S. Watanabe, R. Marcé, D.C. Pierson, W. Thiery, E. Jennings, Phenological shifts in lake stratification under climate change, Nature Communications. 12 (2021). ieee: 'R. I. Woolway et al., “Phenological shifts in lake stratification under climate change,” Nature Communications, vol. 12, no. 1, Art. no. 2318, 2021, doi: 10.1038/s41467-021-22657-4.' mla: Woolway, R. Iestyn, et al. “Phenological Shifts in Lake Stratification under Climate Change.” Nature Communications, vol. 12, no. 1, 2318, 2021, https://doi.org/10.1038/s41467-021-22657-4. short: R.I. Woolway, S. Sharma, G.A. Weyhenmeyer, A. Debolskiy, M. Golub, D. Mercado-Bettín, M. Perroud, V. Stepanenko, Z. Tan, L. Grant, R. Ladwig, J. Mesman, T.N. Moore, T. Shatwell, I. Vanderkelen, J.A. Austin, C.L. DeGasperi, M. Dokulil, S. La Fuente, E.B. Mackay, S.G. Schladow, S. Watanabe, R. Marcé, D.C. Pierson, W. Thiery, E. Jennings, Nature Communications 12 (2021). ufg: 'Woolway, R. Iestyn u. a.: Phenological shifts in lake stratification under climate change, in: Nature Communications 12 (2021), H. 1.' van: Woolway RI, Sharma S, Weyhenmeyer GA, Debolskiy A, Golub M, Mercado-Bettín D, et al. Phenological shifts in lake stratification under climate change. Nature Communications. 2021;12(1). date_created: 2024-12-08T20:01:43Z date_updated: 2024-12-11T07:56:16Z department: - _id: DEP8022 doi: 10.1038/s41467-021-22657-4 extern: '1' intvolume: ' 12' issue: '1' language: - iso: eng main_file_link: - url: https://doi.org/10.1038/s41467-021-22657-4 place: London publication: Nature Communications publication_identifier: eissn: - 2041-1723 publication_status: published publisher: ' Springer Nature ' quality_controlled: '1' status: public title: Phenological shifts in lake stratification under climate change type: scientific_journal_article user_id: '83778' volume: 12 year: '2021' ... --- _id: '12230' abstract: - lang: eng text: 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. article_number: '105101' author: - first_name: Tadhg N. full_name: Moore, Tadhg N. last_name: Moore - first_name: Jorrit P. full_name: Mesman, Jorrit P. last_name: Mesman - first_name: Robert full_name: Ladwig, Robert last_name: Ladwig - first_name: Johannes full_name: Feldbauer, Johannes last_name: Feldbauer - first_name: Freya full_name: Olsson, Freya last_name: Olsson - first_name: Rachel M. full_name: Pilla, Rachel M. last_name: Pilla - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Jason J. full_name: Venkiteswaran, Jason J. last_name: Venkiteswaran - first_name: Austin D. full_name: Delany, Austin D. last_name: Delany - first_name: Hilary full_name: Dugan, Hilary last_name: Dugan - first_name: Kevin C. full_name: Rose, Kevin C. last_name: Rose - first_name: Jordan S. full_name: Read, Jordan S. last_name: Read citation: ama: 'Moore TN, Mesman JP, Ladwig R, et al. LakeEnsemblR: An R package that facilitates ensemble modelling of lakes. Environmental modelling & software with environment data news. 2021;143. doi:10.1016/j.envsoft.2021.105101' apa: 'Moore, T. N., Mesman, J. P., Ladwig, R., Feldbauer, J., Olsson, F., Pilla, R. M., Shatwell, T., Venkiteswaran, J. J., Delany, A. D., Dugan, H., Rose, K. C., & Read, J. S. (2021). LakeEnsemblR: An R package that facilitates ensemble modelling of lakes. Environmental Modelling & Software with Environment Data News, 143, Article 105101. https://doi.org/10.1016/j.envsoft.2021.105101' bjps: 'Moore TN et al. (2021) LakeEnsemblR: An R Package That Facilitates Ensemble Modelling of Lakes. Environmental modelling & software with environment data news 143.' chicago: 'Moore, Tadhg N., Jorrit P. Mesman, Robert Ladwig, Johannes Feldbauer, Freya Olsson, Rachel M. Pilla, Tom Shatwell, et al. “LakeEnsemblR: An R Package That Facilitates Ensemble Modelling of Lakes.” Environmental Modelling & Software with Environment Data News 143 (2021). https://doi.org/10.1016/j.envsoft.2021.105101.' chicago-de: 'Moore, Tadhg N., Jorrit P. Mesman, Robert Ladwig, Johannes Feldbauer, Freya Olsson, Rachel M. Pilla, Tom Shatwell, u. a. 2021. LakeEnsemblR: An R package that facilitates ensemble modelling of lakes. Environmental modelling & software with environment data news 143. doi:10.1016/j.envsoft.2021.105101, .' din1505-2-1: 'Moore, Tadhg N. ; Mesman, Jorrit P. ; Ladwig, Robert ; Feldbauer, Johannes ; Olsson, Freya ; Pilla, Rachel M. ; Shatwell, Tom ; Venkiteswaran, Jason J. ; u. a.: LakeEnsemblR: An R package that facilitates ensemble modelling of lakes. In: Environmental modelling & software with environment data news Bd. 143, Elsevier BV (2021)' havard: 'T.N. Moore, J.P. Mesman, R. Ladwig, J. Feldbauer, F. Olsson, R.M. Pilla, T. Shatwell, J.J. Venkiteswaran, A.D. Delany, H. Dugan, K.C. Rose, J.S. Read, LakeEnsemblR: An R package that facilitates ensemble modelling of lakes, Environmental Modelling & Software with Environment Data News. 143 (2021).' ieee: 'T. N. Moore et al., “LakeEnsemblR: An R package that facilitates ensemble modelling of lakes,” Environmental modelling & software with environment data news, vol. 143, Art. no. 105101, 2021, doi: 10.1016/j.envsoft.2021.105101.' mla: 'Moore, Tadhg N., et al. “LakeEnsemblR: An R Package That Facilitates Ensemble Modelling of Lakes.” Environmental Modelling & Software with Environment Data News, vol. 143, 105101, 2021, https://doi.org/10.1016/j.envsoft.2021.105101.' short: T.N. Moore, J.P. Mesman, R. Ladwig, J. Feldbauer, F. Olsson, R.M. Pilla, T. Shatwell, J.J. Venkiteswaran, A.D. Delany, H. Dugan, K.C. Rose, J.S. Read, Environmental Modelling & Software with Environment Data News 143 (2021). ufg: 'Moore, Tadhg N. u. a.: LakeEnsemblR: An R package that facilitates ensemble modelling of lakes, in: Environmental modelling & software with environment data news 143 (2021).' van: 'Moore TN, Mesman JP, Ladwig R, Feldbauer J, Olsson F, Pilla RM, et al. LakeEnsemblR: An R package that facilitates ensemble modelling of lakes. Environmental modelling & software with environment data news. 2021;143.' date_created: 2024-12-08T20:18:32Z date_updated: 2024-12-09T11:27:54Z department: - _id: DEP8022 doi: 10.1016/j.envsoft.2021.105101 extern: '1' intvolume: ' 143' keyword: - Ensemble modeling - Vertical one-dimensional lake model - R package - Calibration - Thermal structure - Hydrodynamics language: - iso: eng main_file_link: - url: https://doi.org/10.1016/j.envsoft.2021.105101 publication: Environmental modelling & software with environment data news publication_identifier: eissn: - 1873-6726 issn: - 1364-8152 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: 'LakeEnsemblR: An R package that facilitates ensemble modelling of lakes' type: scientific_journal_article user_id: '83781' volume: 143 year: '2021' ... --- _id: '12232' abstract: - lang: eng text: 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: - first_name: Daniel full_name: Graeber, Daniel last_name: Graeber - first_name: Youngdoung full_name: Tenzin, Youngdoung last_name: Tenzin - first_name: Marc full_name: Stutter, Marc last_name: Stutter - first_name: Gabriele full_name: Weigelhofer, Gabriele last_name: Weigelhofer - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Wolf full_name: von Tümpling, Wolf last_name: von Tümpling - first_name: Jörg full_name: Tittel, Jörg last_name: Tittel - first_name: Alexander full_name: Wachholz, Alexander last_name: Wachholz - first_name: Dietrich full_name: Borchardt, Dietrich last_name: Borchardt citation: ama: 'Graeber D, Tenzin Y, Stutter M, et al. Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis. Biogeochemistry : an international journal . 2021;155(1):1-20. doi:10.1007/s10533-021-00809-4' apa: 'Graeber, D., Tenzin, Y., Stutter, M., Weigelhofer, G., Shatwell, T., von Tümpling, W., Tittel, J., Wachholz, A., & Borchardt, D. (2021). Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis. Biogeochemistry : An International Journal , 155(1), 1–20. https://doi.org/10.1007/s10533-021-00809-4' bjps: 'Graeber D et al. (2021) Bioavailable DOC: Reactive Nutrient Ratios Control Heterotrophic Nutrient Assimilation—An Experimental Proof of the Macronutrient-Access Hypothesis. Biogeochemistry : an international journal 155, 1–20.' chicago: 'Graeber, Daniel, Youngdoung Tenzin, Marc Stutter, Gabriele Weigelhofer, Tom Shatwell, Wolf von Tümpling, Jörg Tittel, Alexander Wachholz, and Dietrich Borchardt. “Bioavailable DOC: Reactive Nutrient Ratios Control Heterotrophic Nutrient Assimilation—An Experimental Proof of the Macronutrient-Access Hypothesis.” Biogeochemistry : An International Journal 155, no. 1 (2021): 1–20. https://doi.org/10.1007/s10533-021-00809-4.' chicago-de: 'Graeber, Daniel, Youngdoung Tenzin, Marc Stutter, Gabriele Weigelhofer, Tom Shatwell, Wolf von Tümpling, Jörg Tittel, Alexander Wachholz und Dietrich Borchardt. 2021. Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis. Biogeochemistry : an international journal 155, Nr. 1: 1–20. doi:10.1007/s10533-021-00809-4, .' din1505-2-1: 'Graeber, Daniel ; Tenzin, Youngdoung ; Stutter, Marc ; Weigelhofer, Gabriele ; Shatwell, Tom ; von Tümpling, Wolf ; Tittel, Jörg ; Wachholz, Alexander ; u. a.: Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis. In: Biogeochemistry : an international journal Bd. 155. Cham, Springer (2021), Nr. 1, S. 1–20' havard: 'D. Graeber, Y. Tenzin, M. Stutter, G. Weigelhofer, T. Shatwell, W. von Tümpling, J. Tittel, A. Wachholz, D. Borchardt, Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis, Biogeochemistry : An International Journal . 155 (2021) 1–20.' ieee: 'D. Graeber et al., “Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis,” Biogeochemistry : an international journal , vol. 155, no. 1, pp. 1–20, 2021, doi: 10.1007/s10533-021-00809-4.' mla: 'Graeber, Daniel, et al. “Bioavailable DOC: Reactive Nutrient Ratios Control Heterotrophic Nutrient Assimilation—An Experimental Proof of the Macronutrient-Access Hypothesis.” Biogeochemistry : An International Journal , vol. 155, no. 1, 2021, pp. 1–20, https://doi.org/10.1007/s10533-021-00809-4.' short: 'D. Graeber, Y. Tenzin, M. Stutter, G. Weigelhofer, T. Shatwell, W. von Tümpling, J. Tittel, A. Wachholz, D. Borchardt, Biogeochemistry : An International Journal 155 (2021) 1–20.' ufg: 'Graeber, Daniel u. a.: Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis, in: Biogeochemistry : an international journal 155 (2021), H. 1,  S. 1–20.' van: 'Graeber D, Tenzin Y, Stutter M, Weigelhofer G, Shatwell T, von Tümpling W, et al. Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis. Biogeochemistry : an international journal . 2021;155(1):1–20.' date_created: 2024-12-08T20:21:39Z date_updated: 2024-12-09T11:21:31Z department: - _id: DEP8022 doi: 10.1007/s10533-021-00809-4 extern: '1' intvolume: ' 155' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1007/s10533-021-00809-4 oa: '1' page: 1-20 place: Cham publication: 'Biogeochemistry : an international journal ' publication_identifier: eissn: - 1573-515X issn: - 0168-2563 publication_status: published publisher: 'Springer ' quality_controlled: '1' status: public title: 'Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis' type: scientific_journal_article user_id: '83781' volume: 155 year: '2021' ... --- _id: '12231' abstract: - lang: eng text: 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. article_number: '116681' author: - first_name: Xiangzhen full_name: Kong, Xiangzhen last_name: Kong - first_name: Michael full_name: Seewald, Michael last_name: Seewald - first_name: Tallent full_name: Dadi, Tallent last_name: Dadi - first_name: Kurt full_name: Friese, Kurt last_name: Friese - first_name: Chenxi full_name: Mi, Chenxi last_name: Mi - first_name: Bertram full_name: Boehrer, Bertram last_name: Boehrer - first_name: Martin full_name: Schultze, Martin last_name: Schultze - first_name: Karsten full_name: Rinke, Karsten last_name: Rinke - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 citation: ama: 'Kong X, Seewald M, Dadi T, et al. Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling. Water research : a journal of the International Water Association. 2020;190. doi:10.1016/j.watres.2020.116681' apa: 'Kong, X., Seewald, M., Dadi, T., Friese, K., Mi, C., Boehrer, B., Schultze, M., Rinke, K., & Shatwell, T. (2020). Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling. Water Research : A Journal of the International Water Association, 190, Article 116681. https://doi.org/10.1016/j.watres.2020.116681' bjps: 'Kong X et al. (2020) Unravelling Winter Diatom Blooms in Temperate Lakes Using High Frequency Data and Ecological Modeling. Water research : a journal of the International Water Association 190.' chicago: 'Kong, Xiangzhen, Michael Seewald, Tallent Dadi, Kurt Friese, Chenxi Mi, Bertram Boehrer, Martin Schultze, Karsten Rinke, and Tom Shatwell. “Unravelling Winter Diatom Blooms in Temperate Lakes Using High Frequency Data and Ecological Modeling.” Water Research : A Journal of the International Water Association 190 (2020). https://doi.org/10.1016/j.watres.2020.116681.' chicago-de: 'Kong, Xiangzhen, Michael Seewald, Tallent Dadi, Kurt Friese, Chenxi Mi, Bertram Boehrer, Martin Schultze, Karsten Rinke und Tom Shatwell. 2020. Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling. Water research : a journal of the International Water Association 190. doi:10.1016/j.watres.2020.116681, .' din1505-2-1: 'Kong, Xiangzhen ; Seewald, Michael ; Dadi, Tallent ; Friese, Kurt ; Mi, Chenxi ; Boehrer, Bertram ; Schultze, Martin ; Rinke, Karsten ; u. a.: Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling. In: Water research : a journal of the International Water Association Bd. 190. Amsterdam, Elsevier BV (2020)' havard: 'X. Kong, M. Seewald, T. Dadi, K. Friese, C. Mi, B. Boehrer, M. Schultze, K. Rinke, T. Shatwell, Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling, Water Research : A Journal of the International Water Association. 190 (2020).' ieee: 'X. Kong et al., “Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling,” Water research : a journal of the International Water Association, vol. 190, Art. no. 116681, 2020, doi: 10.1016/j.watres.2020.116681.' mla: 'Kong, Xiangzhen, et al. “Unravelling Winter Diatom Blooms in Temperate Lakes Using High Frequency Data and Ecological Modeling.” Water Research : A Journal of the International Water Association, vol. 190, 116681, 2020, https://doi.org/10.1016/j.watres.2020.116681.' short: 'X. Kong, M. Seewald, T. Dadi, K. Friese, C. Mi, B. Boehrer, M. Schultze, K. Rinke, T. Shatwell, Water Research : A Journal of the International Water Association 190 (2020).' ufg: 'Kong, Xiangzhen u. a.: Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling, in: Water research : a journal of the International Water Association 190 (2020).' van: 'Kong X, Seewald M, Dadi T, Friese K, Mi C, Boehrer B, et al. Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling. Water research : a journal of the International Water Association. 2020;190.' date_created: 2024-12-08T20:19:54Z date_updated: 2024-12-09T11:24:12Z department: - _id: DEP8022 doi: 10.1016/j.watres.2020.116681 extern: '1' intvolume: ' 190' keyword: - Winter diatom bloom - High frequency monitoring - Lake modeling - Light limitation - Temperature language: - iso: eng main_file_link: - url: https://doi.org/10.1016/j.watres.2020.116681 place: Amsterdam publication: 'Water research : a journal of the International Water Association' publication_identifier: eissn: - 1879-2448 issn: - 0043-1354 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling type: scientific_journal_article user_id: '83781' volume: 190 year: '2020' ... --- _id: '12233' abstract: - lang: eng text: 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. article_number: '141366' author: - first_name: Chenxi full_name: Mi, Chenxi last_name: Mi - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Jun full_name: Ma, Jun last_name: Ma - first_name: Yaqian full_name: Xu, Yaqian last_name: Xu - first_name: Fangli full_name: Su, Fangli last_name: Su - first_name: Karsten full_name: Rinke, Karsten last_name: Rinke citation: ama: 'Mi C, Shatwell T, Ma J, Xu Y, Su F, Rinke K. Ensemble warming projections in Germany’s largest drinking water reservoir and potential adaptation strategies. The science of the total environment : an international journal for scientific research into the environment and its relationship with man. 2020;748(12). doi:10.1016/j.scitotenv.2020.141366' apa: 'Mi, C., Shatwell, T., Ma, J., Xu, Y., Su, F., & Rinke, K. (2020). Ensemble warming projections in Germany’s largest drinking water reservoir and potential adaptation strategies. The Science of the Total Environment : An International Journal for Scientific Research into the Environment and Its Relationship with Man, 748(12), Article 141366. https://doi.org/10.1016/j.scitotenv.2020.141366' bjps: 'Mi C et al. (2020) Ensemble Warming Projections in Germany’s Largest Drinking Water Reservoir and Potential Adaptation Strategies. The science of the total environment : an international journal for scientific research into the environment and its relationship with man 748.' chicago: 'Mi, Chenxi, Tom Shatwell, Jun Ma, Yaqian Xu, Fangli Su, and Karsten Rinke. “Ensemble Warming Projections in Germany’s Largest Drinking Water Reservoir and Potential Adaptation Strategies.” The Science of the Total Environment : An International Journal for Scientific Research into the Environment and Its Relationship with Man 748, no. 12 (2020). https://doi.org/10.1016/j.scitotenv.2020.141366.' chicago-de: 'Mi, Chenxi, Tom Shatwell, Jun Ma, Yaqian Xu, Fangli Su und Karsten Rinke. 2020. Ensemble warming projections in Germany’s largest drinking water reservoir and potential adaptation strategies. The science of the total environment : an international journal for scientific research into the environment and its relationship with man 748, Nr. 12. doi:10.1016/j.scitotenv.2020.141366, .' din1505-2-1: 'Mi, Chenxi ; Shatwell, Tom ; Ma, Jun ; Xu, Yaqian ; Su, Fangli ; Rinke, Karsten: Ensemble warming projections in Germany’s largest drinking water reservoir and potential adaptation strategies. In: The science of the total environment : an international journal for scientific research into the environment and its relationship with man Bd. 748. Amsterdam, Elsevier BV (2020), Nr. 12' havard: 'C. Mi, T. Shatwell, J. Ma, Y. Xu, F. Su, K. Rinke, Ensemble warming projections in Germany’s largest drinking water reservoir and potential adaptation strategies, The Science of the Total Environment : An International Journal for Scientific Research into the Environment and Its Relationship with Man. 748 (2020).' ieee: 'C. Mi, T. Shatwell, J. Ma, Y. Xu, F. Su, and K. Rinke, “Ensemble warming projections in Germany’s largest drinking water reservoir and potential adaptation strategies,” The science of the total environment : an international journal for scientific research into the environment and its relationship with man, vol. 748, no. 12, Art. no. 141366, 2020, doi: 10.1016/j.scitotenv.2020.141366.' mla: 'Mi, Chenxi, et al. “Ensemble Warming Projections in Germany’s Largest Drinking Water Reservoir and Potential Adaptation Strategies.” The Science of the Total Environment : An International Journal for Scientific Research into the Environment and Its Relationship with Man, vol. 748, no. 12, 141366, 2020, https://doi.org/10.1016/j.scitotenv.2020.141366.' short: 'C. Mi, T. Shatwell, J. Ma, Y. Xu, F. Su, K. Rinke, The Science of the Total Environment : An International Journal for Scientific Research into the Environment and Its Relationship with Man 748 (2020).' ufg: 'Mi, Chenxi u. a.: Ensemble warming projections in Germany’s largest drinking water reservoir and potential adaptation strategies, in: The science of the total environment : an international journal for scientific research into the environment and its relationship with man 748 (2020), H. 12.' van: 'Mi C, Shatwell T, Ma J, Xu Y, Su F, Rinke K. Ensemble warming projections in Germany’s largest drinking water reservoir and potential adaptation strategies. The science of the total environment : an international journal for scientific research into the environment and its relationship with man. 2020;748(12).' date_created: 2024-12-08T20:23:26Z date_updated: 2024-12-09T11:18:40Z department: - _id: DEP8022 doi: 10.1016/j.scitotenv.2020.141366 extern: '1' intvolume: ' 748' issue: '12' keyword: - Rappbode Reservoir - Thermal structure - Climate change - CE-QUAL-W2 - Selective water withdrawal language: - iso: eng main_file_link: - url: https://doi.org/10.1016/j.scitotenv.2020.141366 place: Amsterdam publication: 'The science of the total environment : an international journal for scientific research into the environment and its relationship with man' publication_identifier: eissn: - 1879-1026 issn: - 0048-9697 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: Ensemble warming projections in Germany's largest drinking water reservoir and potential adaptation strategies type: scientific_journal_article user_id: '83781' volume: 748 year: '2020' ... --- _id: '12234' author: - first_name: Christopher C. M. full_name: Kyba, Christopher C. M. last_name: Kyba - first_name: Jeff full_name: Conrad, Jeff last_name: Conrad - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 citation: ama: Kyba CCM, Conrad J, Shatwell T. Lunar illuminated fraction is a poor proxy for moonlight exposure. Nature ecology & evolution. 2020;4(3):318-319. doi:10.1038/s41559-020-1096-7 apa: Kyba, C. C. M., Conrad, J., & Shatwell, T. (2020). Lunar illuminated fraction is a poor proxy for moonlight exposure. Nature Ecology & Evolution, 4(3), 318–319. https://doi.org/10.1038/s41559-020-1096-7 bjps: Kyba CCM, Conrad J and Shatwell T (2020) Lunar Illuminated Fraction Is a Poor Proxy for Moonlight Exposure. Nature ecology & evolution 4, 318–319. chicago: 'Kyba, Christopher C. M., Jeff Conrad, and Tom Shatwell. “Lunar Illuminated Fraction Is a Poor Proxy for Moonlight Exposure.” Nature Ecology & Evolution 4, no. 3 (2020): 318–19. https://doi.org/10.1038/s41559-020-1096-7.' chicago-de: 'Kyba, Christopher C. M., Jeff Conrad und Tom Shatwell. 2020. Lunar illuminated fraction is a poor proxy for moonlight exposure. Nature ecology & evolution 4, Nr. 3: 318–319. doi:10.1038/s41559-020-1096-7, .' din1505-2-1: 'Kyba, Christopher C. M. ; Conrad, Jeff ; Shatwell, Tom: Lunar illuminated fraction is a poor proxy for moonlight exposure. In: Nature ecology & evolution Bd. 4. London, Nature Publishing Group (2020), Nr. 3, S. 318–319' havard: C.C.M. Kyba, J. Conrad, T. Shatwell, Lunar illuminated fraction is a poor proxy for moonlight exposure, Nature Ecology & Evolution. 4 (2020) 318–319. ieee: 'C. C. M. Kyba, J. Conrad, and T. Shatwell, “Lunar illuminated fraction is a poor proxy for moonlight exposure,” Nature ecology & evolution, vol. 4, no. 3, pp. 318–319, 2020, doi: 10.1038/s41559-020-1096-7.' mla: Kyba, Christopher C. M., et al. “Lunar Illuminated Fraction Is a Poor Proxy for Moonlight Exposure.” Nature Ecology & Evolution, vol. 4, no. 3, 2020, pp. 318–19, https://doi.org/10.1038/s41559-020-1096-7. short: C.C.M. Kyba, J. Conrad, T. Shatwell, Nature Ecology & Evolution 4 (2020) 318–319. ufg: 'Kyba, Christopher C.M./Conrad, Jeff/Shatwell, Tom: Lunar illuminated fraction is a poor proxy for moonlight exposure, in: Nature ecology & evolution 4 (2020), H. 3,  S. 318–319.' van: Kyba CCM, Conrad J, Shatwell T. Lunar illuminated fraction is a poor proxy for moonlight exposure. Nature ecology & evolution. 2020;4(3):318–9. date_created: 2024-12-08T20:24:48Z date_updated: 2024-12-09T10:42:29Z department: - _id: DEP8022 doi: 10.1038/s41559-020-1096-7 extern: '1' intvolume: ' 4' issue: '3' language: - iso: eng main_file_link: - url: https://doi.org/10.1038/s41559-020-1096-7 page: 318-319 place: London publication: Nature ecology & evolution publication_identifier: eissn: - 2397-334X publication_status: published publisher: 'Nature Publishing Group ' quality_controlled: '1' status: public title: Lunar illuminated fraction is a poor proxy for moonlight exposure type: scientific_journal_article user_id: '83781' volume: 4 year: '2020' ... --- _id: '12235' abstract: - lang: eng text: 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. article_number: '115701' author: - first_name: Chenxi full_name: Mi, Chenxi last_name: Mi - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Jun full_name: Ma, Jun last_name: Ma - first_name: Valerie Carolin full_name: Wentzky, Valerie Carolin last_name: Wentzky - first_name: Bertram full_name: Boehrer, Bertram last_name: Boehrer - first_name: Yaqian full_name: Xu, Yaqian last_name: Xu - first_name: Karsten full_name: Rinke, Karsten last_name: Rinke citation: ama: 'Mi C, Shatwell T, Ma J, et al. The formation of a metalimnetic oxygen minimum exemplifies how ecosystem dynamics shape biogeochemical processes: A modelling study. Water research : a journal of the International Water Association. 2020;175(5). doi:10.1016/j.watres.2020.115701' apa: 'Mi, C., Shatwell, T., Ma, J., Wentzky, V. C., Boehrer, B., Xu, Y., & Rinke, K. (2020). The formation of a metalimnetic oxygen minimum exemplifies how ecosystem dynamics shape biogeochemical processes: A modelling study. Water Research : A Journal of the International Water Association, 175(5), Article 115701. https://doi.org/10.1016/j.watres.2020.115701' bjps: 'Mi C et al. (2020) The Formation of a Metalimnetic Oxygen Minimum Exemplifies How Ecosystem Dynamics Shape Biogeochemical Processes: A Modelling Study. Water research : a journal of the International Water Association 175.' chicago: 'Mi, Chenxi, Tom Shatwell, Jun Ma, Valerie Carolin Wentzky, Bertram Boehrer, Yaqian Xu, and Karsten Rinke. “The Formation of a Metalimnetic Oxygen Minimum Exemplifies How Ecosystem Dynamics Shape Biogeochemical Processes: A Modelling Study.” Water Research : A Journal of the International Water Association 175, no. 5 (2020). https://doi.org/10.1016/j.watres.2020.115701.' chicago-de: 'Mi, Chenxi, Tom Shatwell, Jun Ma, Valerie Carolin Wentzky, Bertram Boehrer, Yaqian Xu und Karsten Rinke. 2020. The formation of a metalimnetic oxygen minimum exemplifies how ecosystem dynamics shape biogeochemical processes: A modelling study. Water research : a journal of the International Water Association 175, Nr. 5. doi:10.1016/j.watres.2020.115701, .' din1505-2-1: 'Mi, Chenxi ; Shatwell, Tom ; Ma, Jun ; Wentzky, Valerie Carolin ; Boehrer, Bertram ; Xu, Yaqian ; Rinke, Karsten: The formation of a metalimnetic oxygen minimum exemplifies how ecosystem dynamics shape biogeochemical processes: A modelling study. In: Water research : a journal of the International Water Association Bd. 175. Amsterdam, Elsevier BV (2020), Nr. 5' havard: 'C. Mi, T. Shatwell, J. Ma, V.C. Wentzky, B. Boehrer, Y. Xu, K. Rinke, The formation of a metalimnetic oxygen minimum exemplifies how ecosystem dynamics shape biogeochemical processes: A modelling study, Water Research : A Journal of the International Water Association. 175 (2020).' ieee: 'C. Mi et al., “The formation of a metalimnetic oxygen minimum exemplifies how ecosystem dynamics shape biogeochemical processes: A modelling study,” Water research : a journal of the International Water Association, vol. 175, no. 5, Art. no. 115701, 2020, doi: 10.1016/j.watres.2020.115701.' mla: 'Mi, Chenxi, et al. “The Formation of a Metalimnetic Oxygen Minimum Exemplifies How Ecosystem Dynamics Shape Biogeochemical Processes: A Modelling Study.” Water Research : A Journal of the International Water Association, vol. 175, no. 5, 115701, 2020, https://doi.org/10.1016/j.watres.2020.115701.' short: 'C. Mi, T. Shatwell, J. Ma, V.C. Wentzky, B. Boehrer, Y. Xu, K. Rinke, Water Research : A Journal of the International Water Association 175 (2020).' ufg: 'Mi, Chenxi u. a.: The formation of a metalimnetic oxygen minimum exemplifies how ecosystem dynamics shape biogeochemical processes: A modelling study, in: Water research : a journal of the International Water Association 175 (2020), H. 5.' van: 'Mi C, Shatwell T, Ma J, Wentzky VC, Boehrer B, Xu Y, et al. The formation of a metalimnetic oxygen minimum exemplifies how ecosystem dynamics shape biogeochemical processes: A modelling study. Water research : a journal of the International Water Association. 2020;175(5).' date_created: 2024-12-08T20:26:00Z date_updated: 2024-12-09T10:25:49Z department: - _id: DEP8022 doi: 10.1016/j.watres.2020.115701 extern: '1' intvolume: ' 175' issue: '5' keyword: - Rappbode reservoir - CE-QUAL-W2 - Planktothrix rubescens - Metalimnion - Oxygen consumption - Benthic processes language: - iso: eng main_file_link: - url: https://doi.org/10.1016/j.watres.2020.115701 place: Amsterdam publication: 'Water research : a journal of the International Water Association' publication_identifier: eissn: - 1879-2448 issn: - 0043-1354 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: 'The formation of a metalimnetic oxygen minimum exemplifies how ecosystem dynamics shape biogeochemical processes: A modelling study' type: scientific_journal_article user_id: '83781' volume: 175 year: '2020' ... --- _id: '12236' abstract: - lang: eng text: 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: - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Wim full_name: Thiery, Wim last_name: Thiery - first_name: Georgiy full_name: Kirillin, Georgiy last_name: Kirillin citation: ama: 'Shatwell T, Thiery W, Kirillin G. Future projections of temperature and mixing regime of European temperate lakes. Hydrology and earth system sciences : HESS . 2019;23(3):1533-1551. doi:10.5194/hess-23-1533-2019' apa: 'Shatwell, T., Thiery, W., & Kirillin, G. (2019). Future projections of temperature and mixing regime of European temperate lakes. Hydrology and Earth System Sciences : HESS , 23(3), 1533–1551. https://doi.org/10.5194/hess-23-1533-2019' bjps: 'Shatwell T, Thiery W and Kirillin G (2019) Future Projections of Temperature and Mixing Regime of European Temperate Lakes. Hydrology and earth system sciences : HESS 23, 1533–1551.' chicago: 'Shatwell, Tom, Wim Thiery, and Georgiy Kirillin. “Future Projections of Temperature and Mixing Regime of European Temperate Lakes.” Hydrology and Earth System Sciences : HESS 23, no. 3 (2019): 1533–51. https://doi.org/10.5194/hess-23-1533-2019.' chicago-de: 'Shatwell, Tom, Wim Thiery und Georgiy Kirillin. 2019. Future projections of temperature and mixing regime of European temperate lakes. Hydrology and earth system sciences : HESS 23, Nr. 3: 1533–1551. doi:10.5194/hess-23-1533-2019, .' din1505-2-1: 'Shatwell, Tom ; Thiery, Wim ; Kirillin, Georgiy: Future projections of temperature and mixing regime of European temperate lakes. In: Hydrology and earth system sciences : HESS Bd. 23. Göttingen, Copernicus GmbH (2019), Nr. 3, S. 1533–1551' havard: 'T. Shatwell, W. Thiery, G. Kirillin, Future projections of temperature and mixing regime of European temperate lakes, Hydrology and Earth System Sciences : HESS . 23 (2019) 1533–1551.' ieee: 'T. Shatwell, W. Thiery, and G. Kirillin, “Future projections of temperature and mixing regime of European temperate lakes,” Hydrology and earth system sciences : HESS , vol. 23, no. 3, pp. 1533–1551, 2019, doi: 10.5194/hess-23-1533-2019.' mla: 'Shatwell, Tom, et al. “Future Projections of Temperature and Mixing Regime of European Temperate Lakes.” Hydrology and Earth System Sciences : HESS , vol. 23, no. 3, 2019, pp. 1533–51, https://doi.org/10.5194/hess-23-1533-2019.' short: 'T. Shatwell, W. Thiery, G. Kirillin, Hydrology and Earth System Sciences : HESS 23 (2019) 1533–1551.' ufg: 'Shatwell, Tom/Thiery, Wim/Kirillin, Georgiy: Future projections of temperature and mixing regime of European temperate lakes, in: Hydrology and earth system sciences : HESS 23 (2019), H. 3,  S. 1533–1551.' van: 'Shatwell T, Thiery W, Kirillin G. Future projections of temperature and mixing regime of European temperate lakes. Hydrology and earth system sciences : HESS . 2019;23(3):1533–51.' date_created: 2024-12-08T20:27:48Z date_updated: 2024-12-09T10:20:50Z department: - _id: DEP8022 doi: 10.5194/hess-23-1533-2019 extern: '1' intvolume: ' 23' issue: '3' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.5194/hess-23-1533-2019 oa: '1' page: 1533-1551 place: Göttingen publication: 'Hydrology and earth system sciences : HESS ' publication_identifier: eissn: - 1607-7938 issn: - 1027-5606 publication_status: published publisher: Copernicus GmbH quality_controlled: '1' status: public title: Future projections of temperature and mixing regime of European temperate lakes type: scientific_journal_article user_id: '83781' volume: 23 year: '2019' ... --- _id: '12237' abstract: - lang: eng text: '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: - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Jan full_name: Köhler, Jan last_name: Köhler citation: ama: 'Shatwell T, Köhler J. Decreased nitrogen loading controls summer cyanobacterial blooms without promoting nitrogen‐fixing taxa: Long‐term response of a shallow lake. Limnology and Oceanography. 2018;64(S1). doi:10.1002/lno.11002' apa: 'Shatwell, T., & Köhler, J. (2018). Decreased nitrogen loading controls summer cyanobacterial blooms without promoting nitrogen‐fixing taxa: Long‐term response of a shallow lake. Limnology and Oceanography, 64(S1). https://doi.org/10.1002/lno.11002' bjps: 'Shatwell T and Köhler J (2018) Decreased Nitrogen Loading Controls Summer Cyanobacterial Blooms without Promoting Nitrogen‐fixing Taxa: Long‐term Response of a Shallow Lake. Limnology and Oceanography 64.' chicago: 'Shatwell, Tom, and Jan Köhler. “Decreased Nitrogen Loading Controls Summer Cyanobacterial Blooms without Promoting Nitrogen‐fixing Taxa: Long‐term Response of a Shallow Lake.” Limnology and Oceanography 64, no. S1 (2018). https://doi.org/10.1002/lno.11002.' chicago-de: 'Shatwell, Tom und Jan Köhler. 2018. Decreased nitrogen loading controls summer cyanobacterial blooms without promoting nitrogen‐fixing taxa: Long‐term response of a shallow lake. Limnology and Oceanography 64, Nr. S1. doi:10.1002/lno.11002, .' din1505-2-1: 'Shatwell, Tom ; Köhler, Jan: Decreased nitrogen loading controls summer cyanobacterial blooms without promoting nitrogen‐fixing taxa: Long‐term response of a shallow lake. In: Limnology and Oceanography Bd. 64. Hoboken, NJ, Wiley (2018), Nr. S1' havard: 'T. Shatwell, J. Köhler, Decreased nitrogen loading controls summer cyanobacterial blooms without promoting nitrogen‐fixing taxa: Long‐term response of a shallow lake, Limnology and Oceanography. 64 (2018).' ieee: 'T. Shatwell and J. Köhler, “Decreased nitrogen loading controls summer cyanobacterial blooms without promoting nitrogen‐fixing taxa: Long‐term response of a shallow lake,” Limnology and Oceanography, vol. 64, no. S1, 2018, doi: 10.1002/lno.11002.' mla: 'Shatwell, Tom, and Jan Köhler. “Decreased Nitrogen Loading Controls Summer Cyanobacterial Blooms without Promoting Nitrogen‐fixing Taxa: Long‐term Response of a Shallow Lake.” Limnology and Oceanography, vol. 64, no. S1, 2018, https://doi.org/10.1002/lno.11002.' short: T. Shatwell, J. Köhler, Limnology and Oceanography 64 (2018). ufg: 'Shatwell, Tom/Köhler, Jan: Decreased nitrogen loading controls summer cyanobacterial blooms without promoting nitrogen‐fixing taxa: Long‐term response of a shallow lake, in: Limnology and Oceanography 64 (2018), H. S1.' van: 'Shatwell T, Köhler J. Decreased nitrogen loading controls summer cyanobacterial blooms without promoting nitrogen‐fixing taxa: Long‐term response of a shallow lake. Limnology and Oceanography. 2018;64(S1).' date_created: 2024-12-08T20:29:40Z date_updated: 2024-12-09T10:18:21Z department: - _id: DEP8022 doi: 10.1002/lno.11002 extern: '1' intvolume: ' 64' issue: S1 language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1002/lno.11002 oa: '1' place: Hoboken, NJ publication: Limnology and Oceanography publication_identifier: eissn: - 1939-5590 issn: - 0024-3590 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: 'Decreased nitrogen loading controls summer cyanobacterial blooms without promoting nitrogen‐fixing taxa: Long‐term response of a shallow lake' type: scientific_journal_article user_id: '83781' volume: 64 year: '2018' ... --- _id: '12239' abstract: - lang: eng text: 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: - first_name: Louise C. full_name: Bruce, Louise C. last_name: Bruce - first_name: Marieke A. full_name: Frassl, Marieke A. last_name: Frassl - first_name: George B. full_name: Arhonditsis, George B. last_name: Arhonditsis - first_name: Gideon full_name: Gal, Gideon last_name: Gal - first_name: David P. full_name: Hamilton, David P. last_name: Hamilton - first_name: Paul C. full_name: Hanson, Paul C. last_name: Hanson - first_name: Amy L. full_name: Hetherington, Amy L. last_name: Hetherington - first_name: John M. full_name: Melack, John M. last_name: Melack - first_name: Jordan S. full_name: Read, Jordan S. last_name: Read - first_name: Karsten full_name: Rinke, Karsten last_name: Rinke - first_name: Anna full_name: Rigosi, Anna last_name: Rigosi - first_name: Dennis full_name: Trolle, Dennis last_name: Trolle - first_name: Luke full_name: Winslow, Luke last_name: Winslow - first_name: Rita full_name: Adrian, Rita last_name: Adrian - first_name: Ana I. full_name: Ayala, Ana I. last_name: Ayala - first_name: Serghei A. full_name: Bocaniov, Serghei A. last_name: Bocaniov - first_name: Bertram full_name: Boehrer, Bertram last_name: Boehrer - first_name: Casper full_name: Boon, Casper last_name: Boon - first_name: Justin D. full_name: Brookes, Justin D. last_name: Brookes - first_name: Thomas full_name: Bueche, Thomas last_name: Bueche - first_name: Brendan D. full_name: Busch, Brendan D. last_name: Busch - first_name: Diego full_name: Copetti, Diego last_name: Copetti - first_name: Alicia full_name: Cortés, Alicia last_name: Cortés - first_name: Elvira full_name: de Eyto, Elvira last_name: de Eyto - first_name: J. Alex full_name: Elliott, J. Alex last_name: Elliott - first_name: Nicole full_name: Gallina, Nicole last_name: Gallina - first_name: Yael full_name: Gilboa, Yael last_name: Gilboa - first_name: Nicolas full_name: Guyennon, Nicolas last_name: Guyennon - first_name: Lei full_name: Huang, Lei last_name: Huang - first_name: Onur full_name: Kerimoglu, Onur last_name: Kerimoglu - first_name: John D. full_name: Lenters, John D. last_name: Lenters - first_name: Sally full_name: MacIntyre, Sally last_name: MacIntyre - first_name: Vardit full_name: Makler-Pick, Vardit last_name: Makler-Pick - first_name: Chris G. full_name: McBride, Chris G. last_name: McBride - first_name: Santiago full_name: Moreira, Santiago last_name: Moreira - first_name: Deniz full_name: Özkundakci, Deniz last_name: Özkundakci - first_name: Marco full_name: Pilotti, Marco last_name: Pilotti - first_name: Francisco J. full_name: Rueda, Francisco J. last_name: Rueda - first_name: James A. full_name: Rusak, James A. last_name: Rusak - first_name: Nihar R. full_name: Samal, Nihar R. last_name: Samal - first_name: Martin full_name: Schmid, Martin last_name: Schmid - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Craig full_name: Snorthheim, Craig last_name: Snorthheim - first_name: Frédéric full_name: Soulignac, Frédéric last_name: Soulignac - first_name: Giulia full_name: Valerio, Giulia last_name: Valerio - first_name: Leon full_name: van der Linden, Leon last_name: van der Linden - first_name: Mark full_name: Vetter, Mark last_name: Vetter - first_name: Brigitte full_name: Vinçon-Leite, Brigitte last_name: Vinçon-Leite - first_name: Junbo full_name: Wang, Junbo last_name: Wang - first_name: Michael full_name: Weber, Michael last_name: Weber - first_name: Chaturangi full_name: Wickramaratne, Chaturangi last_name: Wickramaratne - first_name: R. Iestyn full_name: Woolway, R. Iestyn last_name: Woolway - first_name: Huaxia full_name: Yao, Huaxia last_name: Yao - first_name: Matthew R. full_name: Hipsey, Matthew R. last_name: Hipsey citation: ama: 'Bruce LC, Frassl MA, Arhonditsis GB, et al. A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network. Environmental modelling & software with environment data news . 2018;102(4):274-291. doi:10.1016/j.envsoft.2017.11.016' apa: 'Bruce, L. C., Frassl, M. A., Arhonditsis, G. B., Gal, G., Hamilton, D. P., Hanson, P. C., Hetherington, A. L., Melack, J. M., Read, J. S., Rinke, K., Rigosi, A., Trolle, D., Winslow, L., Adrian, R., Ayala, A. I., Bocaniov, S. A., Boehrer, B., Boon, C., Brookes, J. D., … Hipsey, M. R. (2018). A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network. Environmental Modelling & Software with Environment Data News , 102(4), 274–291. https://doi.org/10.1016/j.envsoft.2017.11.016' bjps: 'Bruce LC et al. (2018) A Multi-Lake Comparative Analysis of the General Lake Model (GLM): Stress-Testing across a Global Observatory Network. Environmental modelling & software with environment data news 102, 274–291.' chicago: 'Bruce, Louise C., Marieke A. Frassl, George B. Arhonditsis, Gideon Gal, David P. Hamilton, Paul C. Hanson, Amy L. Hetherington, et al. “A Multi-Lake Comparative Analysis of the General Lake Model (GLM): Stress-Testing across a Global Observatory Network.” Environmental Modelling & Software with Environment Data News 102, no. 4 (2018): 274–91. https://doi.org/10.1016/j.envsoft.2017.11.016.' chicago-de: 'Bruce, Louise C., Marieke A. Frassl, George B. Arhonditsis, Gideon Gal, David P. Hamilton, Paul C. Hanson, Amy L. Hetherington, u. a. 2018. A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network. Environmental modelling & software with environment data news 102, Nr. 4: 274–291. doi:10.1016/j.envsoft.2017.11.016, .' din1505-2-1: 'Bruce, Louise C. ; Frassl, Marieke A. ; Arhonditsis, George B. ; Gal, Gideon ; Hamilton, David P. ; Hanson, Paul C. ; Hetherington, Amy L. ; Melack, John M. ; u. a.: A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network. In: Environmental modelling & software with environment data news Bd. 102. Oxford, Elsevier Science (2018), Nr. 4, S. 274–291' havard: 'L.C. Bruce, M.A. Frassl, G.B. Arhonditsis, G. Gal, D.P. Hamilton, P.C. Hanson, A.L. Hetherington, J.M. Melack, J.S. Read, K. Rinke, A. Rigosi, D. Trolle, L. Winslow, R. Adrian, A.I. Ayala, S.A. Bocaniov, B. Boehrer, C. Boon, J.D. Brookes, T. Bueche, B.D. Busch, D. Copetti, A. Cortés, E. de Eyto, J.A. Elliott, N. Gallina, Y. Gilboa, N. Guyennon, L. Huang, O. Kerimoglu, J.D. Lenters, S. MacIntyre, V. Makler-Pick, C.G. McBride, S. Moreira, D. Özkundakci, M. Pilotti, F.J. Rueda, J.A. Rusak, N.R. Samal, M. Schmid, T. Shatwell, C. Snorthheim, F. Soulignac, G. Valerio, L. van der Linden, M. Vetter, B. Vinçon-Leite, J. Wang, M. Weber, C. Wickramaratne, R.I. Woolway, H. Yao, M.R. Hipsey, A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network, Environmental Modelling & Software with Environment Data News . 102 (2018) 274–291.' ieee: 'L. C. Bruce et al., “A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network,” Environmental modelling & software with environment data news , vol. 102, no. 4, pp. 274–291, 2018, doi: 10.1016/j.envsoft.2017.11.016.' mla: 'Bruce, Louise C., et al. “A Multi-Lake Comparative Analysis of the General Lake Model (GLM): Stress-Testing across a Global Observatory Network.” Environmental Modelling & Software with Environment Data News , vol. 102, no. 4, 2018, pp. 274–91, https://doi.org/10.1016/j.envsoft.2017.11.016.' short: L.C. Bruce, M.A. Frassl, G.B. Arhonditsis, G. Gal, D.P. Hamilton, P.C. Hanson, A.L. Hetherington, J.M. Melack, J.S. Read, K. Rinke, A. Rigosi, D. Trolle, L. Winslow, R. Adrian, A.I. Ayala, S.A. Bocaniov, B. Boehrer, C. Boon, J.D. Brookes, T. Bueche, B.D. Busch, D. Copetti, A. Cortés, E. de Eyto, J.A. Elliott, N. Gallina, Y. Gilboa, N. Guyennon, L. Huang, O. Kerimoglu, J.D. Lenters, S. MacIntyre, V. Makler-Pick, C.G. McBride, S. Moreira, D. Özkundakci, M. Pilotti, F.J. Rueda, J.A. Rusak, N.R. Samal, M. Schmid, T. Shatwell, C. Snorthheim, F. Soulignac, G. Valerio, L. van der Linden, M. Vetter, B. Vinçon-Leite, J. Wang, M. Weber, C. Wickramaratne, R.I. Woolway, H. Yao, M.R. Hipsey, Environmental Modelling & Software with Environment Data News 102 (2018) 274–291. ufg: 'Bruce, Louise C. u. a.: A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network, in: Environmental modelling & software with environment data news 102 (2018), H. 4,  S. 274–291.' van: 'Bruce LC, Frassl MA, Arhonditsis GB, Gal G, Hamilton DP, Hanson PC, et al. A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network. Environmental modelling & software with environment data news . 2018;102(4):274–91.' date_created: 2024-12-08T20:32:07Z date_updated: 2024-12-09T10:13:47Z department: - _id: DEP8022 doi: 10.1016/j.envsoft.2017.11.016 extern: '1' intvolume: ' 102' issue: '4' keyword: - Lake model - Stratification - GLM - Model assessment - Global observatory data - Network science language: - iso: eng main_file_link: - url: https://doi.org/10.1016/j.envsoft.2017.11.016 page: 274-291 place: Oxford publication: 'Environmental modelling & software with environment data news ' publication_identifier: eissn: - 1873-6726 issn: - 1364-8152 publication_status: published publisher: Elsevier Science quality_controlled: '1' status: public title: 'A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network' type: scientific_journal_article user_id: '83781' volume: 102 year: '2018' ... --- _id: '12238' abstract: - lang: eng text: 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: - first_name: Jan full_name: Köhler, Jan last_name: Köhler - first_name: Lan full_name: Wang, Lan last_name: Wang - first_name: Alexis full_name: Guislain, Alexis last_name: Guislain - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 citation: ama: Köhler J, Wang L, Guislain A, Shatwell T. Influence of vertical mixing on light‐dependency of phytoplankton growth. Limnology and Oceanography. 2017;63(3):1156-1167. doi:10.1002/lno.10761 apa: Köhler, J., Wang, L., Guislain, A., & Shatwell, T. (2017). Influence of vertical mixing on light‐dependency of phytoplankton growth. Limnology and Oceanography, 63(3), 1156–1167. https://doi.org/10.1002/lno.10761 bjps: Köhler J et al. (2017) Influence of Vertical Mixing on Light‐dependency of Phytoplankton Growth. Limnology and Oceanography 63, 1156–1167. chicago: 'Köhler, Jan, Lan Wang, Alexis Guislain, and Tom Shatwell. “Influence of Vertical Mixing on Light‐dependency of Phytoplankton Growth.” Limnology and Oceanography 63, no. 3 (2017): 1156–67. https://doi.org/10.1002/lno.10761.' chicago-de: 'Köhler, Jan, Lan Wang, Alexis Guislain und Tom Shatwell. 2017. Influence of vertical mixing on light‐dependency of phytoplankton growth. Limnology and Oceanography 63, Nr. 3: 1156–1167. doi:10.1002/lno.10761, .' din1505-2-1: 'Köhler, Jan ; Wang, Lan ; Guislain, Alexis ; Shatwell, Tom: Influence of vertical mixing on light‐dependency of phytoplankton growth. In: Limnology and Oceanography Bd. 63. Hoboken, NJ , Wiley (2017), Nr. 3, S. 1156–1167' havard: J. Köhler, L. Wang, A. Guislain, T. Shatwell, Influence of vertical mixing on light‐dependency of phytoplankton growth, Limnology and Oceanography. 63 (2017) 1156–1167. ieee: 'J. Köhler, L. Wang, A. Guislain, and T. Shatwell, “Influence of vertical mixing on light‐dependency of phytoplankton growth,” Limnology and Oceanography, vol. 63, no. 3, pp. 1156–1167, 2017, doi: 10.1002/lno.10761.' mla: Köhler, Jan, et al. “Influence of Vertical Mixing on Light‐dependency of Phytoplankton Growth.” Limnology and Oceanography, vol. 63, no. 3, 2017, pp. 1156–67, https://doi.org/10.1002/lno.10761. short: J. Köhler, L. Wang, A. Guislain, T. Shatwell, Limnology and Oceanography 63 (2017) 1156–1167. ufg: 'Köhler, Jan u. a.: Influence of vertical mixing on light‐dependency of phytoplankton growth, in: Limnology and Oceanography 63 (2017), H. 3,  S. 1156–1167.' van: Köhler J, Wang L, Guislain A, Shatwell T. Influence of vertical mixing on light‐dependency of phytoplankton growth. Limnology and Oceanography. 2017;63(3):1156–67. date_created: 2024-12-08T20:31:00Z date_updated: 2024-12-09T10:16:41Z department: - _id: DEP8022 doi: 10.1002/lno.10761 extern: '1' intvolume: ' 63' issue: '3' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1002/lno.10761 oa: '1' page: 1156-1167 place: 'Hoboken, NJ ' publication: Limnology and Oceanography publication_identifier: eissn: - 1939-5590 issn: - 0024-3590 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: Influence of vertical mixing on light‐dependency of phytoplankton growth type: scientific_journal_article user_id: '83781' volume: 63 year: '2017' ... --- _id: '12240' abstract: - lang: eng text: 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: - first_name: Georgiy full_name: Kirillin, Georgiy last_name: Kirillin - first_name: Lijuan full_name: Wen, Lijuan last_name: Wen - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 citation: ama: 'Kirillin G, Wen L, Shatwell T. Seasonal thermal regime and climatic trends in lakes of the Tibetan highlands. Hydrology and earth system sciences : HESS . 2017;21(4):1895-1909. doi:10.5194/hess-21-1895-2017' apa: 'Kirillin, G., Wen, L., & Shatwell, T. (2017). Seasonal thermal regime and climatic trends in lakes of the Tibetan highlands. Hydrology and Earth System Sciences : HESS , 21(4), 1895–1909. https://doi.org/10.5194/hess-21-1895-2017' bjps: 'Kirillin G, Wen L and Shatwell T (2017) Seasonal Thermal Regime and Climatic Trends in Lakes of the Tibetan Highlands. Hydrology and earth system sciences : HESS 21, 1895–1909.' chicago: 'Kirillin, Georgiy, Lijuan Wen, and Tom Shatwell. “Seasonal Thermal Regime and Climatic Trends in Lakes of the Tibetan Highlands.” Hydrology and Earth System Sciences : HESS 21, no. 4 (2017): 1895–1909. https://doi.org/10.5194/hess-21-1895-2017.' chicago-de: 'Kirillin, Georgiy, Lijuan Wen und Tom Shatwell. 2017. Seasonal thermal regime and climatic trends in lakes of the Tibetan highlands. Hydrology and earth system sciences : HESS 21, Nr. 4: 1895–1909. doi:10.5194/hess-21-1895-2017, .' din1505-2-1: 'Kirillin, Georgiy ; Wen, Lijuan ; Shatwell, Tom: Seasonal thermal regime and climatic trends in lakes of the Tibetan highlands. In: Hydrology and earth system sciences : HESS Bd. 21. Göttingen, Copernicus GmbH (2017), Nr. 4, S. 1895–1909' havard: 'G. Kirillin, L. Wen, T. Shatwell, Seasonal thermal regime and climatic trends in lakes of the Tibetan highlands, Hydrology and Earth System Sciences : HESS . 21 (2017) 1895–1909.' ieee: 'G. Kirillin, L. Wen, and T. Shatwell, “Seasonal thermal regime and climatic trends in lakes of the Tibetan highlands,” Hydrology and earth system sciences : HESS , vol. 21, no. 4, pp. 1895–1909, 2017, doi: 10.5194/hess-21-1895-2017.' mla: 'Kirillin, Georgiy, et al. “Seasonal Thermal Regime and Climatic Trends in Lakes of the Tibetan Highlands.” Hydrology and Earth System Sciences : HESS , vol. 21, no. 4, 2017, pp. 1895–909, https://doi.org/10.5194/hess-21-1895-2017.' short: 'G. Kirillin, L. Wen, T. Shatwell, Hydrology and Earth System Sciences : HESS 21 (2017) 1895–1909.' ufg: 'Kirillin, Georgiy/Wen, Lijuan/Shatwell, Tom: Seasonal thermal regime and climatic trends in lakes of the Tibetan highlands, in: Hydrology and earth system sciences : HESS 21 (2017), H. 4,  S. 1895–1909.' van: 'Kirillin G, Wen L, Shatwell T. Seasonal thermal regime and climatic trends in lakes of the Tibetan highlands. Hydrology and earth system sciences : HESS . 2017;21(4):1895–909.' date_created: 2024-12-08T20:33:42Z date_updated: 2024-12-09T10:21:09Z department: - _id: DEP8022 doi: 10.5194/hess-21-1895-2017 extern: '1' intvolume: ' 21' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.5194/hess-21-1895-2017 oa: '1' page: 1895-1909 place: Göttingen publication: 'Hydrology and earth system sciences : HESS ' publication_identifier: eissn: - 1607-7938 issn: - '1027-5606 ' publication_status: published publisher: Copernicus GmbH quality_controlled: '1' status: public title: Seasonal thermal regime and climatic trends in lakes of the Tibetan highlands type: scientific_journal_article user_id: '83781' volume: 21 year: '2017' ... --- _id: '12241' abstract: - lang: eng text: 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: - first_name: Peter full_name: Kasprzak, Peter last_name: Kasprzak - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Mark O. full_name: Gessner, Mark O. last_name: Gessner - first_name: Thomas full_name: Gonsiorczyk, Thomas last_name: Gonsiorczyk - first_name: Georgiy full_name: Kirillin, Georgiy last_name: Kirillin - first_name: Géza full_name: Selmeczy, Géza last_name: Selmeczy - first_name: Judit full_name: Padisák, Judit last_name: Padisák - first_name: Christof full_name: Engelhardt, Christof last_name: Engelhardt citation: ama: Kasprzak P, Shatwell T, Gessner MO, et al. Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-water Lake. Ecosystems. 2017;20(8):1407-1420. doi:10.1007/s10021-017-0121-4 apa: Kasprzak, P., Shatwell, T., Gessner, M. O., Gonsiorczyk, T., Kirillin, G., Selmeczy, G., Padisák, J., & Engelhardt, C. (2017). Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-water Lake. Ecosystems, 20(8), 1407–1420. https://doi.org/10.1007/s10021-017-0121-4 bjps: Kasprzak P et al. (2017) Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-Water Lake. Ecosystems 20, 1407–1420. chicago: 'Kasprzak, Peter, Tom Shatwell, Mark O. Gessner, Thomas Gonsiorczyk, Georgiy Kirillin, Géza Selmeczy, Judit Padisák, and Christof Engelhardt. “Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-Water Lake.” Ecosystems 20, no. 8 (2017): 1407–20. https://doi.org/10.1007/s10021-017-0121-4.' chicago-de: 'Kasprzak, Peter, Tom Shatwell, Mark O. Gessner, Thomas Gonsiorczyk, Georgiy Kirillin, Géza Selmeczy, Judit Padisák und Christof Engelhardt. 2017. Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-water Lake. Ecosystems 20, Nr. 8: 1407–1420. doi:10.1007/s10021-017-0121-4, .' din1505-2-1: 'Kasprzak, Peter ; Shatwell, Tom ; Gessner, Mark O. ; Gonsiorczyk, Thomas ; Kirillin, Georgiy ; Selmeczy, Géza ; Padisák, Judit ; Engelhardt, Christof: Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-water Lake. In: Ecosystems Bd. 20. New York, Springer Science and Business Media LLC (2017), Nr. 8, S. 1407–1420' havard: P. Kasprzak, T. Shatwell, M.O. Gessner, T. Gonsiorczyk, G. Kirillin, G. Selmeczy, J. Padisák, C. Engelhardt, Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-water Lake, Ecosystems. 20 (2017) 1407–1420. ieee: 'P. Kasprzak et al., “Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-water Lake,” Ecosystems, vol. 20, no. 8, pp. 1407–1420, 2017, doi: 10.1007/s10021-017-0121-4.' mla: Kasprzak, Peter, et al. “Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-Water Lake.” Ecosystems, vol. 20, no. 8, 2017, pp. 1407–20, https://doi.org/10.1007/s10021-017-0121-4. short: P. Kasprzak, T. Shatwell, M.O. Gessner, T. Gonsiorczyk, G. Kirillin, G. Selmeczy, J. Padisák, C. Engelhardt, Ecosystems 20 (2017) 1407–1420. ufg: 'Kasprzak, Peter u. a.: Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-water Lake, in: Ecosystems 20 (2017), H. 8,  S. 1407–1420.' van: Kasprzak P, Shatwell T, Gessner MO, Gonsiorczyk T, Kirillin G, Selmeczy G, et al. Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-water Lake. Ecosystems. 2017;20(8):1407–20. date_created: 2024-12-08T20:34:54Z date_updated: 2024-12-09T10:06:47Z department: - _id: DEP8022 doi: 10.1007/s10021-017-0121-4 extern: '1' intvolume: ' 20' issue: '8' language: - iso: eng main_file_link: - url: https://doi.org/10.1007/s10021-017-0121-4 page: 1407-1420 place: New York publication: Ecosystems publication_identifier: eissn: - 1435-0629 issn: - 1432-9840 publication_status: published publisher: Springer Science and Business Media LLC quality_controlled: '1' status: public title: Extreme Weather Event Triggers Cascade Towards Extreme Turbidity in a Clear-water Lake type: scientific_journal_article user_id: '83781' volume: 20 year: '2017' ... --- _id: '12242' abstract: - lang: eng text: '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: - first_name: G. full_name: Kirillin, G. last_name: Kirillin - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 citation: ama: Kirillin G, Shatwell T. Generalized scaling of seasonal thermal stratification in lakes. Earth-Science Reviews. 2016;161:179-190. doi:10.1016/j.earscirev.2016.08.008 apa: Kirillin, G., & Shatwell, T. (2016). Generalized scaling of seasonal thermal stratification in lakes. Earth-Science Reviews, 161, 179–190. https://doi.org/10.1016/j.earscirev.2016.08.008 bjps: Kirillin G and Shatwell T (2016) Generalized Scaling of Seasonal Thermal Stratification in Lakes. Earth-Science Reviews 161, 179–190. chicago: 'Kirillin, G., and Tom Shatwell. “Generalized Scaling of Seasonal Thermal Stratification in Lakes.” Earth-Science Reviews 161 (2016): 179–90. https://doi.org/10.1016/j.earscirev.2016.08.008.' chicago-de: 'Kirillin, G. und Tom Shatwell. 2016. Generalized scaling of seasonal thermal stratification in lakes. Earth-Science Reviews 161: 179–190. doi:10.1016/j.earscirev.2016.08.008, .' din1505-2-1: 'Kirillin, G. ; Shatwell, Tom: Generalized scaling of seasonal thermal stratification in lakes. In: Earth-Science Reviews Bd. 161, Elsevier BV (2016), S. 179–190' havard: G. Kirillin, T. Shatwell, Generalized scaling of seasonal thermal stratification in lakes, Earth-Science Reviews. 161 (2016) 179–190. ieee: 'G. Kirillin and T. Shatwell, “Generalized scaling of seasonal thermal stratification in lakes,” Earth-Science Reviews, vol. 161, pp. 179–190, 2016, doi: 10.1016/j.earscirev.2016.08.008.' mla: Kirillin, G., and Tom Shatwell. “Generalized Scaling of Seasonal Thermal Stratification in Lakes.” Earth-Science Reviews, vol. 161, 2016, pp. 179–90, https://doi.org/10.1016/j.earscirev.2016.08.008. short: G. Kirillin, T. Shatwell, Earth-Science Reviews 161 (2016) 179–190. ufg: 'Kirillin, G./Shatwell, Tom: Generalized scaling of seasonal thermal stratification in lakes, in: Earth-Science Reviews 161 (2016),  S. 179–190.' van: Kirillin G, Shatwell T. Generalized scaling of seasonal thermal stratification in lakes. Earth-Science Reviews. 2016;161:179–90. date_created: 2024-12-08T20:35:50Z date_updated: 2024-12-09T10:04:30Z department: - _id: DEP8022 doi: 10.1016/j.earscirev.2016.08.008 extern: '1' intvolume: ' 161' keyword: - Richardson number - Lake classification - Seasonal stratification - Dimixis - Polymixis - Water transparency - Lake databases - Lake modeling - Secchi depth language: - iso: eng main_file_link: - url: https://doi.org/10.1016/j.earscirev.2016.08.008 page: 179-190 publication: Earth-Science Reviews publication_identifier: issn: - 0012-8252 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: Generalized scaling of seasonal thermal stratification in lakes type: scientific_journal_article user_id: '83781' volume: 161 year: '2016' ... --- _id: '12243' abstract: - lang: eng text: 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. article_number: '24361' author: - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Rita full_name: Adrian, Rita last_name: Adrian - first_name: Georgiy full_name: Kirillin, Georgiy last_name: Kirillin citation: ama: Shatwell T, Adrian R, Kirillin G. Planktonic events may cause polymictic-dimictic regime shifts in temperate lakes. Scientific Reports. 2016;6(1). doi:10.1038/srep24361 apa: Shatwell, T., Adrian, R., & Kirillin, G. (2016). Planktonic events may cause polymictic-dimictic regime shifts in temperate lakes. Scientific Reports, 6(1), Article 24361. https://doi.org/10.1038/srep24361 bjps: Shatwell T, Adrian R and Kirillin G (2016) Planktonic Events May Cause Polymictic-Dimictic Regime Shifts in Temperate Lakes. Scientific Reports 6. chicago: Shatwell, Tom, Rita Adrian, and Georgiy Kirillin. “Planktonic Events May Cause Polymictic-Dimictic Regime Shifts in Temperate Lakes.” Scientific Reports 6, no. 1 (2016). https://doi.org/10.1038/srep24361. chicago-de: Shatwell, Tom, Rita Adrian und Georgiy Kirillin. 2016. Planktonic events may cause polymictic-dimictic regime shifts in temperate lakes. Scientific Reports 6, Nr. 1. doi:10.1038/srep24361, . din1505-2-1: 'Shatwell, Tom ; Adrian, Rita ; Kirillin, Georgiy: Planktonic events may cause polymictic-dimictic regime shifts in temperate lakes. In: Scientific Reports Bd. 6. London, Springer Science and Business Media LLC (2016), Nr. 1' havard: T. Shatwell, R. Adrian, G. Kirillin, Planktonic events may cause polymictic-dimictic regime shifts in temperate lakes, Scientific Reports. 6 (2016). ieee: 'T. Shatwell, R. Adrian, and G. Kirillin, “Planktonic events may cause polymictic-dimictic regime shifts in temperate lakes,” Scientific Reports, vol. 6, no. 1, Art. no. 24361, 2016, doi: 10.1038/srep24361.' mla: Shatwell, Tom, et al. “Planktonic Events May Cause Polymictic-Dimictic Regime Shifts in Temperate Lakes.” Scientific Reports, vol. 6, no. 1, 24361, 2016, https://doi.org/10.1038/srep24361. short: T. Shatwell, R. Adrian, G. Kirillin, Scientific Reports 6 (2016). ufg: 'Shatwell, Tom/Adrian, Rita/Kirillin, Georgiy: Planktonic events may cause polymictic-dimictic regime shifts in temperate lakes, in: Scientific Reports 6 (2016), H. 1.' van: Shatwell T, Adrian R, Kirillin G. Planktonic events may cause polymictic-dimictic regime shifts in temperate lakes. Scientific Reports. 2016;6(1). date_created: 2024-12-08T20:36:58Z date_updated: 2024-12-09T09:42:13Z department: - _id: DEP8022 doi: 10.1038/srep24361 extern: '1' intvolume: ' 6' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1038/srep24361 oa: '1' place: London publication: Scientific Reports publication_identifier: eissn: - 2045-2322 publication_status: published publisher: Springer Science and Business Media LLC quality_controlled: '1' status: public title: Planktonic events may cause polymictic-dimictic regime shifts in temperate lakes type: scientific_journal_article user_id: '83781' volume: 6 year: '2016' ... --- _id: '12244' abstract: - lang: eng text: 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: - first_name: F. full_name: Müller, F. last_name: Müller - first_name: M. full_name: Bergmann, M. last_name: Bergmann - first_name: R. full_name: Dannowski, R. last_name: Dannowski - first_name: J.W. full_name: Dippner, J.W. last_name: Dippner - first_name: A. full_name: Gnauck, A. last_name: Gnauck - first_name: P. full_name: Haase, P. last_name: Haase - first_name: Marc C. full_name: Jochimsen, Marc C. last_name: Jochimsen - first_name: P. full_name: Kasprzak, P. last_name: Kasprzak - first_name: I. full_name: Kröncke, I. last_name: Kröncke - first_name: R. full_name: Kümmerlin, R. last_name: Kümmerlin - first_name: M. full_name: Küster, M. last_name: Küster - first_name: G. full_name: Lischeid, G. last_name: Lischeid - first_name: H. full_name: Meesenburg, H. last_name: Meesenburg - first_name: C. full_name: Merz, C. last_name: Merz - first_name: G. full_name: Millat, G. last_name: Millat - first_name: J. full_name: Müller, J. last_name: Müller - first_name: J. full_name: Padisák, J. last_name: Padisák - first_name: C.G. full_name: Schimming, C.G. last_name: Schimming - first_name: H. full_name: Schubert, H. last_name: Schubert - first_name: M. full_name: Schult, M. last_name: Schult - first_name: G. full_name: Selmeczy, G. last_name: Selmeczy - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: S. full_name: Stoll, S. last_name: Stoll - first_name: M. full_name: Schwabe, M. last_name: Schwabe - first_name: T. full_name: Soltwedel, T. last_name: Soltwedel - first_name: D. full_name: Straile, D. last_name: Straile - first_name: M. full_name: Theuerkauf, M. last_name: Theuerkauf citation: ama: 'Müller F, Bergmann M, Dannowski R, et al. Assessing resilience in long-term ecological data sets.   Ecological indicators : integrating monitoring, assessment and management. 2015;65(6):10-43. doi:10.1016/j.ecolind.2015.10.066' apa: 'Müller, F., Bergmann, M., Dannowski, R., Dippner, J. W., Gnauck, A., Haase, P., Jochimsen, M. C., Kasprzak, P., Kröncke, I., Kümmerlin, R., Küster, M., Lischeid, G., Meesenburg, H., Merz, C., Millat, G., Müller, J., Padisák, J., Schimming, C. G., Schubert, H., … Theuerkauf, M. (2015). Assessing resilience in long-term ecological data sets.   Ecological Indicators : Integrating Monitoring, Assessment and Management, 65(6), 10–43. https://doi.org/10.1016/j.ecolind.2015.10.066' bjps: 'Müller F et al. (2015) Assessing Resilience in Long-Term Ecological Data Sets.   Ecological indicators : integrating monitoring, assessment and management 65, 10–43.' chicago: 'Müller, F., M. Bergmann, R. Dannowski, J.W. Dippner, A. Gnauck, P. Haase, Marc C. Jochimsen, et al. “Assessing Resilience in Long-Term Ecological Data Sets.”   Ecological Indicators : Integrating Monitoring, Assessment and Management 65, no. 6 (2015): 10–43. https://doi.org/10.1016/j.ecolind.2015.10.066.' chicago-de: 'Müller, F., M. Bergmann, R. Dannowski, J.W. Dippner, A. Gnauck, P. Haase, Marc C. Jochimsen, u. a. 2015. Assessing resilience in long-term ecological data sets.   Ecological indicators : integrating monitoring, assessment and management 65, Nr. 6: 10–43. doi:10.1016/j.ecolind.2015.10.066, .' din1505-2-1: 'Müller, F. ; Bergmann, M. ; Dannowski, R. ; Dippner, J.W. ; Gnauck, A. ; Haase, P. ; Jochimsen, Marc C. ; Kasprzak, P. ; u. a.: Assessing resilience in long-term ecological data sets. In:   Ecological indicators : integrating monitoring, assessment and management Bd. 65. Amsterdam, Elsevier BV (2015), Nr. 6, S. 10–43' havard: 'F. Müller, M. Bergmann, R. Dannowski, J.W. Dippner, A. Gnauck, P. Haase, M.C. Jochimsen, P. Kasprzak, I. Kröncke, R. Kümmerlin, M. Küster, G. Lischeid, H. Meesenburg, C. Merz, G. Millat, J. Müller, J. Padisák, C.G. Schimming, H. Schubert, M. Schult, G. Selmeczy, T. Shatwell, S. Stoll, M. Schwabe, T. Soltwedel, D. Straile, M. Theuerkauf, Assessing resilience in long-term ecological data sets,   Ecological Indicators : Integrating Monitoring, Assessment and Management. 65 (2015) 10–43.' ieee: 'F. Müller et al., “Assessing resilience in long-term ecological data sets,”   Ecological indicators : integrating monitoring, assessment and management, vol. 65, no. 6, pp. 10–43, 2015, doi: 10.1016/j.ecolind.2015.10.066.' mla: 'Müller, F., et al. “Assessing Resilience in Long-Term Ecological Data Sets.”   Ecological Indicators : Integrating Monitoring, Assessment and Management, vol. 65, no. 6, 2015, pp. 10–43, https://doi.org/10.1016/j.ecolind.2015.10.066.' short: 'F. Müller, M. Bergmann, R. Dannowski, J.W. Dippner, A. Gnauck, P. Haase, M.C. Jochimsen, P. Kasprzak, I. Kröncke, R. Kümmerlin, M. Küster, G. Lischeid, H. Meesenburg, C. Merz, G. Millat, J. Müller, J. Padisák, C.G. Schimming, H. Schubert, M. Schult, G. Selmeczy, T. Shatwell, S. Stoll, M. Schwabe, T. Soltwedel, D. Straile, M. Theuerkauf,   Ecological Indicators : Integrating Monitoring, Assessment and Management 65 (2015) 10–43.' ufg: 'Müller, F. u. a.: Assessing resilience in long-term ecological data sets, in:   Ecological indicators : integrating monitoring, assessment and management 65 (2015), H. 6,  S. 10–43.' van: 'Müller F, Bergmann M, Dannowski R, Dippner JW, Gnauck A, Haase P, et al. Assessing resilience in long-term ecological data sets.   Ecological indicators : integrating monitoring, assessment and management. 2015;65(6):10–43.' date_created: 2024-12-08T20:38:10Z date_updated: 2024-12-09T09:38:35Z department: - _id: DEP8022 doi: 10.1016/j.ecolind.2015.10.066 extern: '1' intvolume: ' 65' issue: '6' keyword: - Long-term ecological research - LTER - Ecosystem resilience and adaptability - Spatio-temporal scales - Indicator selection language: - iso: eng main_file_link: - url: https://doi.org/10.1016/j.ecolind.2015.10.066 page: 10-43 place: Amsterdam publication: ' Ecological indicators : integrating monitoring, assessment and management' publication_identifier: eissn: - 1872-7034 issn: - 1470-160X publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: Assessing resilience in long-term ecological data sets type: scientific_journal_article user_id: '83781' volume: 65 year: '2015' ... --- _id: '12245' abstract: - lang: eng text: 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: - first_name: D. full_name: Zak, D. last_name: Zak - first_name: H. full_name: Reuter, H. last_name: Reuter - first_name: J. full_name: Augustin, J. last_name: Augustin - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: M. full_name: Barth, M. last_name: Barth - first_name: J. full_name: Gelbrecht, J. last_name: Gelbrecht - first_name: R. J. full_name: McInnes, R. J. last_name: McInnes citation: ama: Zak D, Reuter H, Augustin J, et al. Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts . Biogeosciences. 2015;12(8):2455-2468. doi:10.5194/bg-12-2455-2015 apa: Zak, D., Reuter, H., Augustin, J., Shatwell, T., Barth, M., Gelbrecht, J., & McInnes, R. J. (2015). Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts . Biogeosciences, 12(8), 2455–2468. https://doi.org/10.5194/bg-12-2455-2015 bjps: Zak D et al. (2015) Changes of the CO2 and CH4 Production Potential of Rewetted Fens in the Perspective of Temporal Vegetation Shifts . Biogeosciences 12, 2455–2468. chicago: 'Zak, D., H. Reuter, J. Augustin, Tom Shatwell, M. Barth, J. Gelbrecht, and R. J. McInnes. “Changes of the CO2 and CH4 Production Potential of Rewetted Fens in the Perspective of Temporal Vegetation Shifts .” Biogeosciences 12, no. 8 (2015): 2455–68. https://doi.org/10.5194/bg-12-2455-2015.' chicago-de: 'Zak, D., H. Reuter, J. Augustin, Tom Shatwell, M. Barth, J. Gelbrecht und R. J. McInnes. 2015. Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts . Biogeosciences 12, Nr. 8: 2455–2468. doi:10.5194/bg-12-2455-2015, .' din1505-2-1: 'Zak, D. ; Reuter, H. ; Augustin, J. ; Shatwell, Tom ; Barth, M. ; Gelbrecht, J. ; McInnes, R. J.: Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts . In: Biogeosciences Bd. 12. Göttingen, Copernicus GmbH (2015), Nr. 8, S. 2455–2468' havard: D. Zak, H. Reuter, J. Augustin, T. Shatwell, M. Barth, J. Gelbrecht, R.J. McInnes, Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts , Biogeosciences. 12 (2015) 2455–2468. ieee: 'D. Zak et al., “Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts ,” Biogeosciences, vol. 12, no. 8, pp. 2455–2468, 2015, doi: 10.5194/bg-12-2455-2015.' mla: Zak, D., et al. “Changes of the CO2 and CH4 Production Potential of Rewetted Fens in the Perspective of Temporal Vegetation Shifts .” Biogeosciences, vol. 12, no. 8, 2015, pp. 2455–68, https://doi.org/10.5194/bg-12-2455-2015. short: D. Zak, H. Reuter, J. Augustin, T. Shatwell, M. Barth, J. Gelbrecht, R.J. McInnes, Biogeosciences 12 (2015) 2455–2468. ufg: 'Zak, D. u. a.: Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts , in: Biogeosciences 12 (2015), H. 8,  S. 2455–2468.' van: Zak D, Reuter H, Augustin J, Shatwell T, Barth M, Gelbrecht J, et al. Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts . Biogeosciences. 2015;12(8):2455–68. date_created: 2024-12-08T20:39:32Z date_updated: 2024-12-09T09:14:41Z department: - _id: DEP8022 doi: 10.5194/bg-12-2455-2015 extern: '1' intvolume: ' 12' issue: '8' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.5194/bg-12-2455-2015 oa: '1' page: 2455-2468 place: Göttingen publication: Biogeosciences publication_identifier: eissn: - 1726-4189 issn: - '1726-4170 ' publication_status: published publisher: Copernicus GmbH quality_controlled: '1' status: public title: 'Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts ' type: scientific_journal_article user_id: '83781' volume: 12 year: '2015' ... --- _id: '12246' abstract: - lang: eng text: 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. article_number: e102367 author: - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Jan full_name: Köhler, Jan last_name: Köhler - first_name: Andreas full_name: Nicklisch, Andreas last_name: Nicklisch citation: ama: Shatwell T, Köhler J, Nicklisch A. Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms. PLoS ONE. 2014;9(7). doi:10.1371/journal.pone.0102367 apa: Shatwell, T., Köhler, J., & Nicklisch, A. (2014). Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms. PLoS ONE, 9(7), Article e102367. https://doi.org/10.1371/journal.pone.0102367 bjps: Shatwell T, Köhler J and Nicklisch A (2014) Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms. PLoS ONE 9. chicago: Shatwell, Tom, Jan Köhler, and Andreas Nicklisch. “Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms.” PLoS ONE 9, no. 7 (2014). https://doi.org/10.1371/journal.pone.0102367. chicago-de: Shatwell, Tom, Jan Köhler und Andreas Nicklisch. 2014. Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms. PLoS ONE 9, Nr. 7. doi:10.1371/journal.pone.0102367, . din1505-2-1: 'Shatwell, Tom ; Köhler, Jan ; Nicklisch, Andreas: Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms. In: PLoS ONE Bd. 9. San Francisco, California, US , Public Library of Science (PLoS) (2014), Nr. 7' havard: T. Shatwell, J. Köhler, A. Nicklisch, Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms, PLoS ONE. 9 (2014). ieee: 'T. Shatwell, J. Köhler, and A. Nicklisch, “Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms,” PLoS ONE, vol. 9, no. 7, Art. no. e102367, 2014, doi: 10.1371/journal.pone.0102367.' mla: Shatwell, Tom, et al. “Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms.” PLoS ONE, vol. 9, no. 7, e102367, 2014, https://doi.org/10.1371/journal.pone.0102367. short: T. Shatwell, J. Köhler, A. Nicklisch, PLoS ONE 9 (2014). ufg: 'Shatwell, Tom/Köhler, Jan/Nicklisch, Andreas: Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms, in: PLoS ONE 9 (2014), H. 7.' van: Shatwell T, Köhler J, Nicklisch A. Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms. PLoS ONE. 2014;9(7). date_created: 2024-12-08T20:40:45Z date_updated: 2024-12-09T09:09:08Z department: - _id: DEP8022 doi: 10.1371/journal.pone.0102367 extern: '1' intvolume: ' 9' issue: '7' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1371/journal.pone.0102367 oa: '1' place: 'San Francisco, California, US ' publication: PLoS ONE publication_identifier: eissn: - 1932-6203 publication_status: published publisher: Public Library of Science (PLoS) quality_controlled: '1' status: public title: Temperature and Photoperiod Interactions with Phosphorus-Limited Growth and Competition of Two Diatoms type: scientific_journal_article user_id: '83781' volume: 9 year: '2014' ... --- _id: '12247' abstract: - lang: eng text: '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: - first_name: Dominik full_name: Zak, Dominik last_name: Zak - first_name: Jörg full_name: Gelbrecht, Jörg last_name: Gelbrecht - first_name: Stefan full_name: Zerbe, Stefan last_name: Zerbe - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Martin full_name: Barth, Martin last_name: Barth - first_name: Alvaro full_name: Cabezas, Alvaro last_name: Cabezas - first_name: Peggy full_name: Steffenhagen, Peggy last_name: Steffenhagen citation: ama: Zak D, Gelbrecht J, Zerbe S, et al. How helophytes influence the phosphorus cycle in degraded inundated peat soils – Implications for fen restoration. Ecological Engineering. 2013;66(5):82-90. doi:10.1016/j.ecoleng.2013.10.003 apa: Zak, D., Gelbrecht, J., Zerbe, S., Shatwell, T., Barth, M., Cabezas, A., & Steffenhagen, P. (2013). How helophytes influence the phosphorus cycle in degraded inundated peat soils – Implications for fen restoration. Ecological Engineering, 66(5), 82–90. https://doi.org/10.1016/j.ecoleng.2013.10.003 bjps: Zak D et al. (2013) How Helophytes Influence the Phosphorus Cycle in Degraded Inundated Peat Soils – Implications for Fen Restoration. Ecological Engineering 66, 82–90. chicago: 'Zak, Dominik, Jörg Gelbrecht, Stefan Zerbe, Tom Shatwell, Martin Barth, Alvaro Cabezas, and Peggy Steffenhagen. “How Helophytes Influence the Phosphorus Cycle in Degraded Inundated Peat Soils – Implications for Fen Restoration.” Ecological Engineering 66, no. 5 (2013): 82–90. https://doi.org/10.1016/j.ecoleng.2013.10.003.' chicago-de: 'Zak, Dominik, Jörg Gelbrecht, Stefan Zerbe, Tom Shatwell, Martin Barth, Alvaro Cabezas und Peggy Steffenhagen. 2013. How helophytes influence the phosphorus cycle in degraded inundated peat soils – Implications for fen restoration. Ecological Engineering 66, Nr. 5: 82–90. doi:10.1016/j.ecoleng.2013.10.003, .' din1505-2-1: 'Zak, Dominik ; Gelbrecht, Jörg ; Zerbe, Stefan ; Shatwell, Tom ; Barth, Martin ; Cabezas, Alvaro ; Steffenhagen, Peggy: How helophytes influence the phosphorus cycle in degraded inundated peat soils – Implications for fen restoration. In: Ecological Engineering Bd. 66. Amsterdam, Elsevier BV (2013), Nr. 5, S. 82–90' havard: D. Zak, J. Gelbrecht, S. Zerbe, T. Shatwell, M. Barth, A. Cabezas, P. Steffenhagen, How helophytes influence the phosphorus cycle in degraded inundated peat soils – Implications for fen restoration, Ecological Engineering. 66 (2013) 82–90. ieee: 'D. Zak et al., “How helophytes influence the phosphorus cycle in degraded inundated peat soils – Implications for fen restoration,” Ecological Engineering, vol. 66, no. 5, pp. 82–90, 2013, doi: 10.1016/j.ecoleng.2013.10.003.' mla: Zak, Dominik, et al. “How Helophytes Influence the Phosphorus Cycle in Degraded Inundated Peat Soils – Implications for Fen Restoration.” Ecological Engineering, vol. 66, no. 5, 2013, pp. 82–90, https://doi.org/10.1016/j.ecoleng.2013.10.003. short: D. Zak, J. Gelbrecht, S. Zerbe, T. Shatwell, M. Barth, A. Cabezas, P. Steffenhagen, Ecological Engineering 66 (2013) 82–90. ufg: 'Zak, Dominik u. a.: How helophytes influence the phosphorus cycle in degraded inundated peat soils – Implications for fen restoration, in: Ecological Engineering 66 (2013), H. 5,  S. 82–90.' van: Zak D, Gelbrecht J, Zerbe S, Shatwell T, Barth M, Cabezas A, et al. How helophytes influence the phosphorus cycle in degraded inundated peat soils – Implications for fen restoration. Ecological Engineering. 2013;66(5):82–90. date_created: 2024-12-08T20:42:18Z date_updated: 2024-12-09T09:06:10Z department: - _id: DEP8022 doi: 10.1016/j.ecoleng.2013.10.003 extern: '1' intvolume: ' 66' issue: '5' keyword: - Leaching - Phosphorus retention - Phragmites australis - Top soil removal - Redox interface - Rewetting language: - iso: eng main_file_link: - url: https://doi.org/10.1016/j.ecoleng.2013.10.003 page: 82-90 place: Amsterdam publication: Ecological Engineering publication_identifier: issn: - 0925-8574 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: How helophytes influence the phosphorus cycle in degraded inundated peat soils – Implications for fen restoration type: scientific_journal_article user_id: '83781' volume: 66 year: '2013' ... --- _id: '12248' abstract: - lang: eng text: 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: - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Jan full_name: Köhler, Jan last_name: Köhler - first_name: Andreas full_name: Nicklisch, Andreas last_name: Nicklisch citation: ama: Shatwell T, Köhler J, Nicklisch A. Temperature and photoperiod interactions with silicon-limited growth and competition of two diatoms. Journal of Plankton Research. 2013;35(5):957-971. doi:10.1093/plankt/fbt058 apa: Shatwell, T., Köhler, J., & Nicklisch, A. (2013). Temperature and photoperiod interactions with silicon-limited growth and competition of two diatoms. Journal of Plankton Research, 35(5), 957–971. https://doi.org/10.1093/plankt/fbt058 bjps: Shatwell T, Köhler J and Nicklisch A (2013) Temperature and Photoperiod Interactions with Silicon-Limited Growth and Competition of Two Diatoms. Journal of Plankton Research 35, 957–971. chicago: 'Shatwell, Tom, Jan Köhler, and Andreas Nicklisch. “Temperature and Photoperiod Interactions with Silicon-Limited Growth and Competition of Two Diatoms.” Journal of Plankton Research 35, no. 5 (2013): 957–71. https://doi.org/10.1093/plankt/fbt058.' chicago-de: 'Shatwell, Tom, Jan Köhler und Andreas Nicklisch. 2013. Temperature and photoperiod interactions with silicon-limited growth and competition of two diatoms. Journal of Plankton Research 35, Nr. 5: 957–971. doi:10.1093/plankt/fbt058, .' din1505-2-1: 'Shatwell, Tom ; Köhler, Jan ; Nicklisch, Andreas: Temperature and photoperiod interactions with silicon-limited growth and competition of two diatoms. In: Journal of Plankton Research Bd. 35. Oxford, Oxford University Press (OUP) (2013), Nr. 5, S. 957–971' havard: T. Shatwell, J. Köhler, A. Nicklisch, Temperature and photoperiod interactions with silicon-limited growth and competition of two diatoms, Journal of Plankton Research. 35 (2013) 957–971. ieee: 'T. Shatwell, J. Köhler, and A. Nicklisch, “Temperature and photoperiod interactions with silicon-limited growth and competition of two diatoms,” Journal of Plankton Research, vol. 35, no. 5, pp. 957–971, 2013, doi: 10.1093/plankt/fbt058.' mla: Shatwell, Tom, et al. “Temperature and Photoperiod Interactions with Silicon-Limited Growth and Competition of Two Diatoms.” Journal of Plankton Research, vol. 35, no. 5, 2013, pp. 957–71, https://doi.org/10.1093/plankt/fbt058. short: T. Shatwell, J. Köhler, A. Nicklisch, Journal of Plankton Research 35 (2013) 957–971. ufg: 'Shatwell, Tom/Köhler, Jan/Nicklisch, Andreas: Temperature and photoperiod interactions with silicon-limited growth and competition of two diatoms, in: Journal of Plankton Research 35 (2013), H. 5,  S. 957–971.' van: Shatwell T, Köhler J, Nicklisch A. Temperature and photoperiod interactions with silicon-limited growth and competition of two diatoms. Journal of Plankton Research. 2013;35(5):957–71. date_created: 2024-12-08T20:43:29Z date_updated: 2024-12-09T09:04:06Z department: - _id: DEP8022 doi: 10.1093/plankt/fbt058 extern: '1' intvolume: ' 35' issue: '5' language: - iso: eng main_file_link: - url: https://doi.org/10.1093/plankt/fbt058 page: 957-971 place: Oxford publication: Journal of Plankton Research publication_identifier: eissn: - 1464-3774 issn: - 0142-7873 publication_status: published publisher: Oxford University Press (OUP) quality_controlled: '1' status: public title: Temperature and photoperiod interactions with silicon-limited growth and competition of two diatoms type: scientific_journal_article user_id: '83781' volume: 35 year: '2013' ... --- _id: '12249' abstract: - lang: eng text: 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: - first_name: Georgiy full_name: Kirillin, Georgiy last_name: Kirillin - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Peter full_name: Kasprzak, Peter last_name: Kasprzak citation: ama: Kirillin G, Shatwell T, Kasprzak P. Consequences of thermal pollution from a nuclear plant on lake temperature and mixing regime. Journal of Hydrology. 2013;496(7):47-56. doi:10.1016/j.jhydrol.2013.05.023 apa: Kirillin, G., Shatwell, T., & Kasprzak, P. (2013). Consequences of thermal pollution from a nuclear plant on lake temperature and mixing regime. Journal of Hydrology, 496(7), 47–56. https://doi.org/10.1016/j.jhydrol.2013.05.023 bjps: Kirillin G, Shatwell T and Kasprzak P (2013) Consequences of Thermal Pollution from a Nuclear Plant on Lake Temperature and Mixing Regime. Journal of Hydrology 496, 47–56. chicago: 'Kirillin, Georgiy, Tom Shatwell, and Peter Kasprzak. “Consequences of Thermal Pollution from a Nuclear Plant on Lake Temperature and Mixing Regime.” Journal of Hydrology 496, no. 7 (2013): 47–56. https://doi.org/10.1016/j.jhydrol.2013.05.023.' chicago-de: 'Kirillin, Georgiy, Tom Shatwell und Peter Kasprzak. 2013. Consequences of thermal pollution from a nuclear plant on lake temperature and mixing regime. Journal of Hydrology 496, Nr. 7: 47–56. doi:10.1016/j.jhydrol.2013.05.023, .' din1505-2-1: 'Kirillin, Georgiy ; Shatwell, Tom ; Kasprzak, Peter: Consequences of thermal pollution from a nuclear plant on lake temperature and mixing regime. In: Journal of Hydrology Bd. 496. Amsterdam, Elsevier BV (2013), Nr. 7, S. 47–56' havard: G. Kirillin, T. Shatwell, P. Kasprzak, Consequences of thermal pollution from a nuclear plant on lake temperature and mixing regime, Journal of Hydrology. 496 (2013) 47–56. ieee: 'G. Kirillin, T. Shatwell, and P. Kasprzak, “Consequences of thermal pollution from a nuclear plant on lake temperature and mixing regime,” Journal of Hydrology, vol. 496, no. 7, pp. 47–56, 2013, doi: 10.1016/j.jhydrol.2013.05.023.' mla: Kirillin, Georgiy, et al. “Consequences of Thermal Pollution from a Nuclear Plant on Lake Temperature and Mixing Regime.” Journal of Hydrology, vol. 496, no. 7, 2013, pp. 47–56, https://doi.org/10.1016/j.jhydrol.2013.05.023. short: G. Kirillin, T. Shatwell, P. Kasprzak, Journal of Hydrology 496 (2013) 47–56. ufg: 'Kirillin, Georgiy/Shatwell, Tom/Kasprzak, Peter: Consequences of thermal pollution from a nuclear plant on lake temperature and mixing regime, in: Journal of Hydrology 496 (2013), H. 7,  S. 47–56.' van: Kirillin G, Shatwell T, Kasprzak P. Consequences of thermal pollution from a nuclear plant on lake temperature and mixing regime. Journal of Hydrology. 2013;496(7):47–56. date_created: 2024-12-08T20:44:14Z date_updated: 2024-12-09T09:02:37Z department: - _id: DEP8022 doi: 10.1016/j.jhydrol.2013.05.023 extern: '1' intvolume: ' 496' issue: '7' keyword: - Industrial thermal pollution - Global warming - Lake stratification - FLake model language: - iso: eng main_file_link: - url: https://doi.org/10.1016/j.jhydrol.2013.05.023 page: 47-56 place: Amsterdam publication: Journal of Hydrology publication_identifier: eissn: - 1879-2707 issn: - 0022-1694 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: Consequences of thermal pollution from a nuclear plant on lake temperature and mixing regime type: scientific_journal_article user_id: '83781' volume: 496 year: '2013' ... --- _id: '12250' abstract: - lang: eng text: '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: - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Andreas full_name: Nicklisch, Andreas last_name: Nicklisch - first_name: Jan full_name: Köhler, Jan last_name: Köhler citation: ama: Shatwell T, Nicklisch A, Köhler J. Temperature and photoperiod effects on phytoplankton growing under simulated mixed layer light fluctuations. Limnology and Oceanography. 2012;57(2):541-553. doi:10.4319/lo.2012.57.2.0541 apa: Shatwell, T., Nicklisch, A., & Köhler, J. (2012). Temperature and photoperiod effects on phytoplankton growing under simulated mixed layer light fluctuations. Limnology and Oceanography, 57(2), 541–553. https://doi.org/10.4319/lo.2012.57.2.0541 bjps: Shatwell T, Nicklisch A and Köhler J (2012) Temperature and Photoperiod Effects on Phytoplankton Growing under Simulated Mixed Layer Light Fluctuations. Limnology and Oceanography 57, 541–553. chicago: 'Shatwell, Tom, Andreas Nicklisch, and Jan Köhler. “Temperature and Photoperiod Effects on Phytoplankton Growing under Simulated Mixed Layer Light Fluctuations.” Limnology and Oceanography 57, no. 2 (2012): 541–53. https://doi.org/10.4319/lo.2012.57.2.0541.' chicago-de: 'Shatwell, Tom, Andreas Nicklisch und Jan Köhler. 2012. Temperature and photoperiod effects on phytoplankton growing under simulated mixed layer light fluctuations. Limnology and Oceanography 57, Nr. 2: 541–553. doi:10.4319/lo.2012.57.2.0541, .' din1505-2-1: 'Shatwell, Tom ; Nicklisch, Andreas ; Köhler, Jan: Temperature and photoperiod effects on phytoplankton growing under simulated mixed layer light fluctuations. In: Limnology and Oceanography Bd. 57, Wiley (2012), Nr. 2, S. 541–553' havard: T. Shatwell, A. Nicklisch, J. Köhler, Temperature and photoperiod effects on phytoplankton growing under simulated mixed layer light fluctuations, Limnology and Oceanography. 57 (2012) 541–553. ieee: 'T. Shatwell, A. Nicklisch, and J. Köhler, “Temperature and photoperiod effects on phytoplankton growing under simulated mixed layer light fluctuations,” Limnology and Oceanography, vol. 57, no. 2, pp. 541–553, 2012, doi: 10.4319/lo.2012.57.2.0541.' mla: Shatwell, Tom, et al. “Temperature and Photoperiod Effects on Phytoplankton Growing under Simulated Mixed Layer Light Fluctuations.” Limnology and Oceanography, vol. 57, no. 2, 2012, pp. 541–53, https://doi.org/10.4319/lo.2012.57.2.0541. short: T. Shatwell, A. Nicklisch, J. Köhler, Limnology and Oceanography 57 (2012) 541–553. ufg: 'Shatwell, Tom/Nicklisch, Andreas/Köhler, Jan: Temperature and photoperiod effects on phytoplankton growing under simulated mixed layer light fluctuations, in: Limnology and Oceanography 57 (2012), H. 2,  S. 541–553.' van: Shatwell T, Nicklisch A, Köhler J. Temperature and photoperiod effects on phytoplankton growing under simulated mixed layer light fluctuations. Limnology and Oceanography. 2012;57(2):541–53. date_created: 2024-12-08T20:45:17Z date_updated: 2024-12-09T08:42:06Z department: - _id: DEP8022 doi: 10.4319/lo.2012.57.2.0541 extern: '1' intvolume: ' 57' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.4319/lo.2012.57.2.0541 oa: '1' page: 541-553 publication: Limnology and Oceanography publication_identifier: issn: - 0024-3590 - 1939-5590 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: Temperature and photoperiod effects on phytoplankton growing under simulated mixed layer light fluctuations type: scientific_journal_article user_id: '83781' volume: 57 year: '2012' ... --- _id: '12252' abstract: - lang: eng text: 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: - first_name: Andreas full_name: Nicklisch, Andreas last_name: Nicklisch - first_name: Tom full_name: Shatwell, Tom id: '86424' last_name: Shatwell orcid: 0000-0002-4520-7916 - first_name: Jan full_name: Kohler, Jan last_name: Kohler citation: ama: Nicklisch A, Shatwell T, Kohler J. Analysis and modelling of the interactive effects of temperature and light on phytoplankton growth and relevance for the spring bloom. Journal of Plankton Research. 2007;30(1):75-91. doi:10.1093/plankt/fbm099 apa: Nicklisch, A., Shatwell, T., & Kohler, J. (2007). Analysis and modelling of the interactive effects of temperature and light on phytoplankton growth and relevance for the spring bloom. Journal of Plankton Research, 30(1), 75–91. https://doi.org/10.1093/plankt/fbm099 bjps: Nicklisch A, Shatwell T and Kohler J (2007) Analysis and Modelling of the Interactive Effects of Temperature and Light on Phytoplankton Growth and Relevance for the Spring Bloom. Journal of Plankton Research 30, 75–91. chicago: 'Nicklisch, Andreas, Tom Shatwell, and Jan Kohler. “Analysis and Modelling of the Interactive Effects of Temperature and Light on Phytoplankton Growth and Relevance for the Spring Bloom.” Journal of Plankton Research 30, no. 1 (2007): 75–91. https://doi.org/10.1093/plankt/fbm099.' chicago-de: 'Nicklisch, Andreas, Tom Shatwell und Jan Kohler. 2007. Analysis and modelling of the interactive effects of temperature and light on phytoplankton growth and relevance for the spring bloom. Journal of Plankton Research 30, Nr. 1: 75–91. doi:10.1093/plankt/fbm099, .' din1505-2-1: 'Nicklisch, Andreas ; Shatwell, Tom ; Kohler, Jan: Analysis and modelling of the interactive effects of temperature and light on phytoplankton growth and relevance for the spring bloom. In: Journal of Plankton Research Bd. 30. Oxford, Oxford University Press (OUP) (2007), Nr. 1, S. 75–91' havard: A. Nicklisch, T. Shatwell, J. Kohler, Analysis and modelling of the interactive effects of temperature and light on phytoplankton growth and relevance for the spring bloom, Journal of Plankton Research. 30 (2007) 75–91. ieee: 'A. Nicklisch, T. Shatwell, and J. Kohler, “Analysis and modelling of the interactive effects of temperature and light on phytoplankton growth and relevance for the spring bloom,” Journal of Plankton Research, vol. 30, no. 1, pp. 75–91, 2007, doi: 10.1093/plankt/fbm099.' mla: Nicklisch, Andreas, et al. “Analysis and Modelling of the Interactive Effects of Temperature and Light on Phytoplankton Growth and Relevance for the Spring Bloom.” Journal of Plankton Research, vol. 30, no. 1, 2007, pp. 75–91, https://doi.org/10.1093/plankt/fbm099. short: A. Nicklisch, T. Shatwell, J. Kohler, Journal of Plankton Research 30 (2007) 75–91. ufg: 'Nicklisch, Andreas/Shatwell, Tom/Kohler, Jan: Analysis and modelling of the interactive effects of temperature and light on phytoplankton growth and relevance for the spring bloom, in: Journal of Plankton Research 30 (2007), H. 1,  S. 75–91.' van: Nicklisch A, Shatwell T, Kohler J. Analysis and modelling of the interactive effects of temperature and light on phytoplankton growth and relevance for the spring bloom. Journal of Plankton Research. 2007;30(1):75–91. date_created: 2024-12-08T20:47:30Z date_updated: 2024-12-09T08:23:58Z department: - _id: DEP8022 doi: 10.1093/plankt/fbm099 extern: '1' intvolume: ' 30' issue: '1' language: - iso: eng main_file_link: - url: https://doi.org/10.1093/plankt/fbm099 page: 75-91 place: Oxford publication: Journal of Plankton Research publication_identifier: eissn: - 1464-3774 issn: - 0142-7873 publication_status: published publisher: Oxford University Press (OUP) quality_controlled: '1' status: public title: Analysis and modelling of the interactive effects of temperature and light on phytoplankton growth and relevance for the spring bloom type: scientific_journal_article user_id: '83781' volume: 30 year: '2007' ...