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Topology of additive pairwise effects in food webs

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  • Móréh, Ágnes
  • Endrédi, Anett
  • Piross, Sándor Imre
  • Jordán, Ferenc

Abstract

Contrasting reductionistic versus holistic views, it is a general question whether adding the parts equals the sum. In the time of multiple drivers of anthropogenic change, it is a crucial issue, and better understanding additivity is critical for strategy and management. More particular research questions ask what are the community effects of the extinction of a single species and whether multiple local effects on different species will generate additive community responses. Here we perform food web simulations and study the community response to perturbing each species, one by one, and perturbing each possible pairwise combination of species. By comparing the two, we quantify additivity and analyze how does it depend on the topological positions of perturbed species pairs. Results increase the predictability of food web research, supporting systems-based conservation management and, possibly, multi-species maximum sustainable yield assessment in fisheries.

Suggested Citation

  • Móréh, Ágnes & Endrédi, Anett & Piross, Sándor Imre & Jordán, Ferenc, 2021. "Topology of additive pairwise effects in food webs," Ecological Modelling, Elsevier, vol. 440(C).
    • Handle: RePEc:eee:ecomod:v:440:y:2021:i:c:s0304380020304737
    DOI: 10.1016/j.ecolmodel.2020.109414
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    References listed on IDEAS

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    1. Legović, Tarzan & Klanjšček, Jasminka & Geček, Sunčana, 2010. "Maximum sustainable yield and species extinction in ecosystems," Ecological Modelling, Elsevier, vol. 221(12), pages 1569-1574.
    2. Jordán, Ferenc & Liu, Wei-chung & Mike, Ágnes, 2009. "Trophic field overlap: A new approach to quantify keystone species," Ecological Modelling, Elsevier, vol. 220(21), pages 2899-2907.
    3. Legović, Tarzan & Geček, Sunčana, 2012. "Impact of maximum sustainable yield on mutualistic communities," Ecological Modelling, Elsevier, vol. 230(C), pages 63-72.
    4. Jordán, Ferenc & Okey, Thomas A. & Bauer, Barbara & Libralato, Simone, 2008. "Identifying important species: Linking structure and function in ecological networks," Ecological Modelling, Elsevier, vol. 216(1), pages 75-80.
    5. Endrédi, Anett & Senánszky, Vera & Libralato, Simone & Jordán, Ferenc, 2018. "Food web dynamics in trophic hierarchies," Ecological Modelling, Elsevier, vol. 368(C), pages 94-103.
    6. Legović, Tarzan & Geček, Sunčana, 2010. "Impact of maximum sustainable yield on independent populations," Ecological Modelling, Elsevier, vol. 221(17), pages 2108-2111.
    7. Anthony R. Ives & Bradley J. Cardinale, 2004. "Food-web interactions govern the resistance of communities after non-random extinctions," Nature, Nature, vol. 429(6988), pages 174-177, May.
    8. Livi, Carmen Maria & Jordán, Ferenc & Lecca, Paola & Okey, Thomas A., 2011. "Identifying key species in ecosystems with stochastic sensitivity analysis," Ecological Modelling, Elsevier, vol. 222(14), pages 2542-2551.
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    Cited by:

    1. Jordán, Ferenc, 2022. "The network perspective: Vertical connections linking organizational levels," Ecological Modelling, Elsevier, vol. 473(C).
    2. Móréh, Ágnes & Jordán, Ferenc & Scheuring, István, 2024. "Effects of joint invasion: How co-invaders affect each other's success in model food webs?," Ecological Modelling, Elsevier, vol. 492(C).

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