Stability and complexity in model meta-ecosystems

Dominique Gravel (), François Massol and Mathew A. Leibold
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Dominique Gravel: Université de Sherbrooke
François Massol: CNRS, Université de Lille - Sciences et Technologies, UMR 8198 Evo-Eco-Paleo (EEP), SPICI group
Mathew A. Leibold: University of Texas at Austin

Nature Communications, 2016, vol. 7, issue 1, 1-8

Abstract: Abstract The diversity of life and its organization in networks of interacting species has been a long-standing theoretical puzzle for ecologists. Ever since May’s provocative paper challenging whether ‘large complex systems [are] stable’ various hypotheses have been proposed to explain when stability should be the rule, not the exception. Spatial dynamics may be stabilizing and thus explain high community diversity, yet existing theory on spatial stabilization is limited, preventing comparisons of the role of dispersal relative to species interactions. Here we incorporate dispersal of organisms and material into stability–complexity theory. We find that stability criteria from classic theory are relaxed in direct proportion to the number of ecologically distinct patches in the meta-ecosystem. Further, we find the stabilizing effect of dispersal is maximal at intermediate intensity. Our results highlight how biodiversity can be vulnerable to factors, such as landscape fragmentation and habitat loss, that isolate local communities.

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12457

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DOI: 10.1038/ncomms12457

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