General relationships between species diversity and stability in competitive systems

The American Naturalist
Anthony R Ives, Jennifer B Hughes

Abstract

Investigating the effect of biodiversity on the stability of ecological communities is complicated by the numerous ways in which models of community interactions can be formulated. This has led to differences in conclusions and interpretations of how the number of species in a community affects its stability. Here, we derive a simple, general relationship between the coefficient of variation (CV) of combined species densities and the environmentally driven variability in species' per capita population growth rates. For a given level of environmentally driven variability in per capita population growth rates, increasing the number of species in a community decreases the CV of combined species densities, provided that species do not respond to environmental fluctuations in a perfectly correlated way. Thus, a community with more species of competitors will be more stable (have lower CV in combined species densities for a given level of environmental variability) than a species-poor community, provided that the species in both communities show equal variability in per capita population growth rates and provided that species within each community do not show strongly correlated responses to environmental fluctuations. This conclusio...Continue Reading

References

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Feb 17, 1999·Proceedings of the National Academy of Sciences of the United States of America·S Yachi, M Loreau
Apr 25, 2000·The American Naturalist·Jennifer B Hughes, Joan Roughgarden
May 23, 2000·Nature·K S McCann
Sep 25, 2008·The American Naturalist·D TilmanC E Bristow

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Citations

Oct 22, 2003·Proceedings of the National Academy of Sciences of the United States of America·Michel LoreauAndrew Gonzalez
May 1, 2008·Proceedings. Biological Sciences·Lasse Ruokolainen, Mike S Fowler
Dec 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Michel Loreau
Jun 5, 2003·Proceedings of the National Academy of Sciences of the United States of America·Paul R Armsworth, Joan E Roughgarden
Jul 5, 2008·The American Naturalist·Michel Loreau, Claire de Mazancourt
Oct 15, 2005·The American Naturalist·Elisa Thébault, Michel Loreau
Oct 29, 2003·The American Naturalist·Yssa D DeWoodyJacob R Goheen
Feb 19, 2013·Journal of Theoretical Biology·Mike S Fowler, Lasse Ruokolainen
Apr 16, 2008·Ecology·Thomas J Valone, Nicholas A Barber
Aug 25, 2009·Trends in Ecology & Evolution·Lasse RuokolainenMike S Fowler
Aug 19, 2009·Journal of Theoretical Biology·Lasse RuokolainenMike S Fowler
Jan 27, 2009·Journal of Theoretical Biology·Yoshinari Tanaka, Masafumi Yoshino
Jul 15, 2009·The Journal of Animal Ecology·Daniel J Leary, Owen L Petchey
Dec 12, 2007·Ecology Letters·Toshinori Okuyama, J Nathaniel Holland
Jan 26, 2013·Ecology Letters·Michel Loreau, Claire de Mazancourt
Aug 31, 2012·Ecology Letters·Mike S FowlerDavid Post
Feb 27, 2013·Ecology Letters·Claire de MazancourtMichel Loreau
Oct 26, 2012·Ecology Letters·Loïc M Thibaut, Sean R Connolly
Aug 19, 2016·Proceedings. Biological Sciences·Laura E DeeSarah E Lester
Jul 21, 2006·Nature·Neil RooneyJohn C Moore
Dec 6, 2017·Journal of Theoretical Biology·Wenfeng Feng, Richard M Bailey

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