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Allometry in an eco-evolutionary network model

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  • Abernethy, Gavin M.

Abstract

An eco-evolutionary food web model is modified to incorporate a body-size trait, enabling a framework for non-uniform mortality and ecological efficiency between species. Evolved communities feature increased connectance, with according benefits to community robustness, and persistent top predators but reduced omnivory and food chain lengths. Body-size maintains a strong positive correlation to trophic level, but does not correlate to an individual species’ contribution to network stability. A spatially-explicit extension of the model assembles large metacommunities with distinct distributions of body-size amongst local food webs.

Suggested Citation

  • Abernethy, Gavin M., 2020. "Allometry in an eco-evolutionary network model," Ecological Modelling, Elsevier, vol. 427(C).
    • Handle: RePEc:eee:ecomod:v:427:y:2020:i:c:s0304380020301629
    DOI: 10.1016/j.ecolmodel.2020.109090
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    References listed on IDEAS

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    1. Abernethy, Gavin M. & McCartney, Mark & Glass, David H., 2019. "The role of migration in a spatial extension of the Webworld eco-evolutionary model," Ecological Modelling, Elsevier, vol. 397(C), pages 122-140.
    2. Richard J. Williams & Neo D. Martinez, 2000. "Simple rules yield complex food webs," Nature, Nature, vol. 404(6774), pages 180-183, March.
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