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Consistent role of weak and strong interactions in high- and low-diversity trophic food webs.

Abstract：

:The growing realization of a looming biodiversity crisis has inspired considerable progress in the quest to link biodiversity, structure and ecosystem function. Here we construct a method that bridges low- and high-diversity approaches to food web theory by elucidating the connection between the stability of the basic building block of food webs and the mean stability properties of large random food web networks. Applying this theoretical framework to common food web models reveals two key findings. First, in almost all cases, high-diversity food web models yield a stability relationship between weak and strong interactions that are compatible in every way to simple low-diversity models. And second, the models that generate the recently discovered phenomena of being purely stabilized by increasing interaction strength correspond to the biologically implausible assumption of perfect interaction strength symmetry.

journal_name

Nat Commun

journal_title

Nature communications

authors

Gellner G,McCann KS

doi

10.1038/ncomms11180

subject

Has Abstract

pub_date

2016-04-12 00:00:00

pages

11180

issn

2041-1723

pii

ncomms11180

journal_volume

7

pub_type

杂志文章

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