Stability and complexity in model meta-ecosystems.

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.

journal_name

Nat Commun

journal_title

Nature communications

authors

Gravel D,Massol F,Leibold MA

doi

10.1038/ncomms12457

subject

Has Abstract

pub_date

2016-08-24 00:00:00

pages

12457

issn

2041-1723

pii

ncomms12457

journal_volume

7

pub_type

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