Effects of temporal abiotic drivers on the dynamics of an allometric trophic network model
Eloranta, A. P., Perälä, T., & Kuparinen, A. (2023). Effects of temporal abiotic drivers on the dynamics of an allometric trophic network model. Ecology and Evolution, 13(3), Article e9928. https://doi.org/10.1002/ece3.9928
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Ecology and EvolutionDate
2023Discipline
Nanoscience CenterResurssiviisausyhteisöAkvaattiset tieteetNanoscience CenterSchool of Resource WisdomAquatic SciencesCopyright
© 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
Current ecological research and ecosystem management call for improved understanding of the abiotic drivers of community dynamics, including temperature effects on species interactions and biomass accumulation. Allometric trophic network (ATN) models, which simulate material (carbon) transfer in trophic networks from producers to consumers based on mass-specific metabolic rates, provide an attractive framework to study consumer–resource interactions from organisms to ecosystems. However, the developed ATN models rarely consider temporal changes in some key abiotic drivers that affect, for example, consumer metabolism and producer growth. Here, we evaluate how temporal changes in carrying capacity and light-dependent growth rate of producers and in temperature-dependent mass-specific metabolic rate of consumers affect ATN model dynamics, namely seasonal biomass accumulation, productivity, and standing stock biomass of different trophic guilds, including age-structured fish communities. Our simulations of the pelagic Lake Constance food web indicated marked effects of temporally changing abiotic parameters on seasonal biomass accumulation of different guild groups, particularly among the lowest trophic levels (primary producers and invertebrates). While the adjustment of average irradiance had minor effect, increasing metabolic rate associated with 1–2°C temperature increase led to a marked decline of larval (0-year age) fish biomass, but to a substantial biomass increase of 2- and 3-year-old fish that were not predated by ≥4-year-old top predator fish, European perch (Perca fluviatilis). However, when averaged across the 100 simulation years, the inclusion of seasonality in abiotic drivers caused only minor changes in standing stock biomasses and productivity of different trophic guilds. Our results demonstrate the potential of introducing seasonality in and adjusting the average values of abiotic ATN model parameters to simulate temporal fluctuations in food-web dynamics, which is an important step in ATN model development aiming to, for example, assess potential future community-level responses to ongoing environmental changes.
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WileyISSN Search the Publication Forum
2045-7758Keywords
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https://converis.jyu.fi/converis/portal/detail/Publication/182273509
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Research Council of Finland; European CommissionFunding program(s)
Academy Project, AoF; ERC Consolidator Grant; Academy Research Fellow, AoF
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about funding
We thank the reviewers and editors for valuable feedback on the previous drafts of our manuscript. The study was funded by the University of Jyväskylä, the Academy of Finland (project grants 340901 to AE and 317495 to AK), and the Natural Sciences and Engineering Research Council of Canada (NSERC; Discovery Grant to AK). In addition, this project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 770884). The present study reflects only the authors' view, and the European Research Council is not responsible for any use that may be made of the information it contains. ...License
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