Abstract:
:Intraspecific variation is at the core of evolutionary theory, and yet, from an ecological perspective, we have few robust expectations for how this variation should affect the dynamics of large communities. Here, by adapting an approach from evolutionary game theory, we show that the incorporation of phenotypic variability into competitive networks dramatically alters the dynamics across ecological timescales, stabilising the systems and buffering the communities against demographic perturbations. The beneficial effects of phenotypic variability are strongest when there are substantial differences among phenotypes and when phenotypes are inherited with moderately high fidelity; yet even low levels of variation lead to significant increases in diversity, stability, and robustness. By identifying a simple and ubiquitous stabilising force in competitive communities, this work contributes to our core understanding of how biological diversity is maintained in natural systems.
journal_name
Ecol Lettjournal_title
Ecology lettersauthors
Maynard DS,Serván CA,Capitán JA,Allesina Sdoi
10.1111/ele.13356subject
Has Abstractpub_date
2019-11-01 00:00:00pages
1776-1786issue
11eissn
1461-023Xissn
1461-0248journal_volume
22pub_type
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