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Adding realism to foraging arena predictions of trophic flow rates in Ecosim ecosystem models: Shared foraging arenas and bout feeding

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  • Walters, Carl
  • Christensen, Villy

Abstract

We update the Ecopath with Ecosim software for aquatic ecosystem modeling to allow users to represent intensification of inter-specific competition through shared use of space–time restricted foraging arenas, as well as predation occurring in periodic short feeding bouts rather than continuously over time. Our study indicates that assuming shared use of foraging arenas can have pathological impact on the ability of ecosystem models to predict maintenance of biological diversity in complex food webs, in cases where multiple predators have similar diet compositions but in fact avoid direct competition through fine-scale separation of feeding locations or times. We further find that the assumption of bout feeding leads to essentially the same predictions about how predation rates ought to vary with predator abundances as does the more unrealistic assumption of continuous feeding.

Suggested Citation

  • Walters, Carl & Christensen, Villy, 2007. "Adding realism to foraging arena predictions of trophic flow rates in Ecosim ecosystem models: Shared foraging arenas and bout feeding," Ecological Modelling, Elsevier, vol. 209(2), pages 342-350.
  • Handle: RePEc:eee:ecomod:v:209:y:2007:i:2:p:342-350
    DOI: 10.1016/j.ecolmodel.2007.06.025
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    Cited by:

    1. Libralato, Simone & Solidoro, Cosimo, 2009. "Bridging biogeochemical and food web models for an End-to-End representation of marine ecosystem dynamics: The Venice lagoon case study," Ecological Modelling, Elsevier, vol. 220(21), pages 2960-2971.
    2. Walters, Carl & Christensen, Villy, 2019. "Effect of non-additivity in mortality rates on predictions of potential yield of forage fishes," Ecological Modelling, Elsevier, vol. 410(C), pages 1-1.
    3. Wilen, Christopher D. & Wilen, James E., 2012. "Fishing down the food chain revisited: Modeling exploited trophic systems," Ecological Economics, Elsevier, vol. 79(C), pages 80-88.
    4. Ricci, P. & Serpetti, N. & Cascione, D. & Cipriano, G. & D'Onghia, G. & De Padova, D. & Fanizza, C. & Ingrosso, M. & Carlucci, R., 2023. "Investigating fishery and climate change effects on the conservation status of odontocetes in the Northern Ionian Sea (Central Mediterranean Sea)," Ecological Modelling, Elsevier, vol. 485(C).
    5. Bentley, Jacob W. & Serpetti, Natalia & Heymans, Johanna Jacomina, 2017. "Investigating the potential impacts of ocean warming on the Norwegian and Barents Seas ecosystem using a time-dynamic food-web model," Ecological Modelling, Elsevier, vol. 360(C), pages 94-107.
    6. Angelini, Ronaldo & de Morais, Ronny José & Catella, Agostinho Carlos & Resende, Emiko Kawakami & Libralato, Simone, 2013. "Aquatic food webs of the oxbow lakes in the Pantanal: A new site for fisheries guaranteed by alternated control?," Ecological Modelling, Elsevier, vol. 253(C), pages 82-96.
    7. Langseth, Brian J. & Rogers, Mark & Zhang, Hongyan, 2012. "Modeling species invasions in Ecopath with Ecosim: An evaluation using Laurentian Great Lakes models," Ecological Modelling, Elsevier, vol. 247(C), pages 251-261.
    8. Bacalso, Regina Therese M. & Wolff, Matthias & Rosales, Rina Maria & Armada, Nygiel B., 2016. "Effort reallocation of illegal fishing operations: A profitable scenario for the municipal fisheries of Danajon Bank, Central Philippines," Ecological Modelling, Elsevier, vol. 331(C), pages 5-16.
    9. Stäbler, Moritz & Kempf, Alexander & Mackinson, Steven & Poos, Jan Jaap & Garcia, Clement & Temming, Axel, 2016. "Combining efforts to make maximum sustainable yields and good environmental status match in a food-web model of the southern North Sea," Ecological Modelling, Elsevier, vol. 331(C), pages 17-30.
    10. Colléter, Mathieu & Valls, Audrey & Guitton, Jérôme & Gascuel, Didier & Pauly, Daniel & Christensen, Villy, 2015. "Global overview of the applications of the Ecopath with Ecosim modeling approach using the EcoBase models repository," Ecological Modelling, Elsevier, vol. 302(C), pages 42-53.
    11. Overholtz, William & Link, Jason, 2009. "A simulation model to explore the response of the Gulf of Maine food web to large-scale environmental and ecological changes," Ecological Modelling, Elsevier, vol. 220(19), pages 2491-2502.
    12. Heinichen, Margaret & McManus, M. Conor & Lucey, Sean M. & Aydin, Kerim & Humphries, Austin & Innes-Gold, Anne & Collie, Jeremy, 2022. "Incorporating temperature-dependent fish bioenergetics into a Narragansett Bay food web model," Ecological Modelling, Elsevier, vol. 466(C).
    13. Langseth, Brian J. & Jones, Michael L. & Riley, Stephen C., 2014. "The effect of adjusting model inputs to achieve mass balance on time-dynamic simulations in a food-web model of Lake Huron," Ecological Modelling, Elsevier, vol. 273(C), pages 44-54.

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