---
_id: '12849'
abstract:
- lang: eng
text: Trophic interactions determine food web structure and influence biodiversity,
community structure, ecosystem functioning, and food web responses to global change.
These interactions are highly flexible, changing on temporal scales from diurnal
to evolutionary times due to phenotypic plasticity, rapid evolution and species
sorting. Small-scale experimental and theoretical studies of plankton interactions
have demonstrated a high relevance of this flexibility for community dynamics
and ecosystem processes in small, simplified communities. However, the extent
to which this flexibility affects larger-scale systems, for example, global ocean
dynamics and their responses to global change, is still poorly understood. Differences
in methodology, focus and terminology between research disciplines limit our ability
to project established effects of flexible trophic interactions onto larger spatial
and temporal scales. We propose to bridge this gap with a general framework for
upscaling knowledge from small-scale research to large-scale models. Building
on examples from plankton communities, we use this framework to show how mechanisms
demonstrated in small-scale studies can be linked to ecosystem functions relevant
at large scales. We argue for incorporating flexibility in large-scale process-based
models to improve their realism and predictive power, and discuss challenges and
ways forward for achieving this. Finally, we suggest several concrete ways for
upscaling small-scale studies to make their findings more relevant for large-scale
research, to close existing knowledge gaps and to improve our understanding of
how flexible trophic interactions affect dynamics and processes across scales.
article_number: '23'
author:
- first_name: Ellen
full_name: van Velzen, Ellen
last_name: van Velzen
- first_name: Sabine
full_name: Wollrab, Sabine
last_name: Wollrab
- first_name: Onur
full_name: Kerimoglu, Onur
last_name: Kerimoglu
- first_name: Ursula
full_name: Gaedke, Ursula
last_name: Gaedke
- first_name: Hans-Peter
full_name: Grossart, Hans-Peter
last_name: Grossart
- first_name: Minoru
full_name: Kasada, Minoru
last_name: Kasada
- first_name: Helena C. L.
full_name: Klip, Helena C. L.
last_name: Klip
- first_name: Stefanie
full_name: Moorthi, Stefanie
last_name: Moorthi
- first_name: Tom
full_name: Shatwell, Tom
id: '86424'
last_name: Shatwell
orcid: 0000-0002-4520-7916
- first_name: Patch
full_name: Thongthaisong, Patch
last_name: Thongthaisong
- first_name: A. E.
full_name: Friederike Prowe, A. E.
last_name: Friederike Prowe
citation:
ama: 'van Velzen E, Wollrab S, Kerimoglu O, et al. Flexibility in Aquatic Food Web
Interactions: Linking Scales and Approaches. Ecosystems. 2025;28(2). doi:10.1007/s10021-025-00968-7'
apa: 'van Velzen, E., Wollrab, S., Kerimoglu, O., Gaedke, U., Grossart, H.-P., Kasada,
M., Klip, H. C. L., Moorthi, S., Shatwell, T., Thongthaisong, P., & Friederike
Prowe, A. E. (2025). Flexibility in Aquatic Food Web Interactions: Linking Scales
and Approaches. Ecosystems, 28(2), Article 23. https://doi.org/10.1007/s10021-025-00968-7'
bjps: 'van Velzen E et al. (2025) Flexibility in Aquatic Food Web
Interactions: Linking Scales and Approaches. Ecosystems 28.'
chicago: 'Velzen, Ellen van, Sabine Wollrab, Onur Kerimoglu, Ursula Gaedke, Hans-Peter
Grossart, Minoru Kasada, Helena C. L. Klip, et al. “Flexibility in Aquatic Food
Web Interactions: Linking Scales and Approaches.” Ecosystems 28, no. 2
(2025). https://doi.org/10.1007/s10021-025-00968-7.'
chicago-de: 'van Velzen, Ellen, Sabine Wollrab, Onur Kerimoglu, Ursula Gaedke, Hans-Peter
Grossart, Minoru Kasada, Helena C. L. Klip, u. a. 2025. Flexibility in Aquatic
Food Web Interactions: Linking Scales and Approaches. Ecosystems 28, Nr.
2. doi:10.1007/s10021-025-00968-7,
.'
din1505-2-1: 'van
Velzen, Ellen ; Wollrab, Sabine
; Kerimoglu, Onur ; Gaedke,
Ursula ; Grossart, Hans-Peter
; Kasada, Minoru ; Klip,
Helena C. L. ; Moorthi, Stefanie
; u. a.: Flexibility in Aquatic Food Web Interactions: Linking Scales and
Approaches. In: Ecosystems Bd. 28. New York, NY, Springer Science and Business
Media LLC (2025), Nr. 2'
havard: 'E. van Velzen, S. Wollrab, O. Kerimoglu, U. Gaedke, H.-P. Grossart, M.
Kasada, H.C.L. Klip, S. Moorthi, T. Shatwell, P. Thongthaisong, A.E. Friederike
Prowe, Flexibility in Aquatic Food Web Interactions: Linking Scales and Approaches,
Ecosystems. 28 (2025).'
ieee: 'E. van Velzen et al., “Flexibility in Aquatic Food Web Interactions:
Linking Scales and Approaches,” Ecosystems, vol. 28, no. 2, Art. no. 23,
2025, doi: 10.1007/s10021-025-00968-7.'
mla: 'van Velzen, Ellen, et al. “Flexibility in Aquatic Food Web Interactions: Linking
Scales and Approaches.” Ecosystems, vol. 28, no. 2, 23, 2025, https://doi.org/10.1007/s10021-025-00968-7.'
short: E. van Velzen, S. Wollrab, O. Kerimoglu, U. Gaedke, H.-P. Grossart, M. Kasada,
H.C.L. Klip, S. Moorthi, T. Shatwell, P. Thongthaisong, A.E. Friederike Prowe,
Ecosystems 28 (2025).
ufg: 'Velzen, Ellen van u. a.: Flexibility in Aquatic Food Web Interactions:
Linking Scales and Approaches, in: Ecosystems 28 (2025), H. 2.'
van: 'van Velzen E, Wollrab S, Kerimoglu O, Gaedke U, Grossart HP, Kasada M, et
al. Flexibility in Aquatic Food Web Interactions: Linking Scales and Approaches.
Ecosystems. 2025;28(2).'
date_created: 2025-04-23T14:32:48Z
date_updated: 2025-06-25T12:39:38Z
department:
- _id: DEP8000
- _id: DEP8022
doi: 10.1007/s10021-025-00968-7
external_id:
isi:
- '001450817700001'
intvolume: ' 28'
isi: '1'
issue: '2'
keyword:
- Functional traits
- Plankton interactions
- Rapid evolution
- Phenotypic plasticity
- Ecosystem functioning
- Global change
- Upscaling
- Adaptation
language:
- iso: eng
place: New York, NY
publication: Ecosystems
publication_identifier:
eissn:
- 1435-0629
issn:
- 1432-9840
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: 'Flexibility in Aquatic Food Web Interactions: Linking Scales and Approaches'
type: scientific_journal_article
user_id: '83781'
volume: 28
year: '2025'
...
---
_id: '12698'
abstract:
- lang: eng
text: 'We explore the determinants affecting the emergence of the “pervaded banking
system” (PBS) – a mixed system encompassing traditional banks and continuously
entering fintech companies – in Austria, Germany, and Switzerland. Drawing on
a sample of 604 fintech companies and 802 banks, we compile an unbalanced panel
dataset between 2015 and 2019 and employ a fixed-effects negative binomial model
to analyze tie formation processes between fintech companies and banks using three
analytical perspectives: (i) geographical colocation, (ii) network embeddedness,
and (iii) combined effects. Our empirical results demonstrate that geographical
factors, network-related drivers, and combined effects positively impact the formation
of ties between banks and fintech companies. This study contributes to the debate
in small business literature by illuminating how small firms affect system emergence.
We make recommendations for bank and fintech managers, as well as political decision-makers,
who need a profound systemic understanding to adapt strategies and set the institutional
framework.'
article_type: original
author:
- first_name: Roland
full_name: von Horn, Roland
last_name: von Horn
- first_name: Muhamed
full_name: Kudic, Muhamed
id: '87331'
last_name: Kudic
citation:
ama: von Horn R, Kudic M. Determinants of system emergence at the nexus of banks
and fintech – insights from the DACH region. Journal of Small Business Management.
2023;62(4):1749-1780. doi:10.1080/00472778.2023.2169704
apa: von Horn, R., & Kudic, M. (2023). Determinants of system emergence at the
nexus of banks and fintech – insights from the DACH region. Journal of Small
Business Management, 62(4), 1749–1780. https://doi.org/10.1080/00472778.2023.2169704
bjps: von Horn R and Kudic M (2023) Determinants of System Emergence at the
Nexus of Banks and Fintech – Insights from the DACH Region. Journal of Small
Business Management 62, 1749–1780.
chicago: 'Horn, Roland von, and Muhamed Kudic. “Determinants of System Emergence
at the Nexus of Banks and Fintech – Insights from the DACH Region.” Journal
of Small Business Management 62, no. 4 (2023): 1749–80. https://doi.org/10.1080/00472778.2023.2169704.'
chicago-de: 'von Horn, Roland und Muhamed Kudic. 2023. Determinants of system emergence
at the nexus of banks and fintech – insights from the DACH region. Journal
of Small Business Management 62, Nr. 4: 1749–1780. doi:10.1080/00472778.2023.2169704,
.'
din1505-2-1: 'von Horn, Roland ; Kudic, Muhamed: Determinants of system
emergence at the nexus of banks and fintech – insights from the DACH region. In:
Journal of Small Business Management Bd. 62. London, Taylor & Francis
(2023), Nr. 4, S. 1749–1780'
havard: R. von Horn, M. Kudic, Determinants of system emergence at the nexus of
banks and fintech – insights from the DACH region, Journal of Small Business Management.
62 (2023) 1749–1780.
ieee: 'R. von Horn and M. Kudic, “Determinants of system emergence at the nexus
of banks and fintech – insights from the DACH region,” Journal of Small Business
Management, vol. 62, no. 4, pp. 1749–1780, 2023, doi: 10.1080/00472778.2023.2169704.'
mla: von Horn, Roland, and Muhamed Kudic. “Determinants of System Emergence at the
Nexus of Banks and Fintech – Insights from the DACH Region.” Journal of Small
Business Management, vol. 62, no. 4, 2023, pp. 1749–80, https://doi.org/10.1080/00472778.2023.2169704.
short: R. von Horn, M. Kudic, Journal of Small Business Management 62 (2023) 1749–1780.
ufg: 'Horn, Roland von/Kudic, Muhamed: Determinants of system emergence at
the nexus of banks and fintech – insights from the DACH region, in: Journal
of Small Business Management 62 (2023), H. 4, S. 1749–1780.'
van: von Horn R, Kudic M. Determinants of system emergence at the nexus of banks
and fintech – insights from the DACH region. Journal of Small Business Management.
2023;62(4):1749–80.
date_created: 2025-03-12T08:09:57Z
date_updated: 2025-03-14T07:54:06Z
department:
- _id: DEP5000
- _id: DEP5032
doi: 10.1080/00472778.2023.2169704
extern: '1'
intvolume: ' 62'
issue: '4'
jel:
- D85
keyword:
- Fintech
- ecosystem
- network emergence
- alliance
language:
- iso: eng
page: 1749-1780
place: London
publication: Journal of Small Business Management
publication_identifier:
eissn:
- 1540-627X
issn:
- 0047-2778
publication_status: published
publisher: Taylor & Francis
quality_controlled: '1'
status: public
title: Determinants of system emergence at the nexus of banks and fintech – insights
from the DACH region
type: scientific_journal_article
user_id: '83781'
volume: 62
year: '2023'
...
---
_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'
...