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Comment
. 2006 Sep 29;313(5795):1887; author reply 1887.
doi: 10.1126/science.1129547.

Comment on "Asymmetric coevolutionary networks facilitate biodiversity maintenance"

J Nathaniel Holland  1 , Toshinori Okuyama, Donald L DeAngelis
Affiliations
Comment

Comment on "Asymmetric coevolutionary networks facilitate biodiversity maintenance"

J Nathaniel Holland et al. Science. .

Abstract

Bascompte et al. (Reports, 21 April 2006, p. 431) used network asymmetries to explain mathematical conditions necessary for stability in historic models of mutualism. The Lotka-Volterra equations they used artificially created conditions in which some factor, such as asymmetric interaction strengths, is necessary for community coexistence. We show that a more realistic model incorporating nonlinear functional responses requires no such condition and is consistent with their data.

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