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COEXISTENCE: HOW TO IDENTIFY TROPHIC TRADE-OFFS

2003; Wiley; Volume: 84; Issue: 1 Linguagem: Inglês

10.1890/0012-9658(2003)084[0017

1939-9170

James S. Clark, Jacqueline E. Mohan, Michael C. Dietze, Inés Ibáñez,

Animal Ecology and Behavior Studies

EcologyVolume 84, Issue 1 p. 17-31 Concepts and Synthesis COEXISTENCE: HOW TO IDENTIFY TROPHIC TRADE-OFFS James S. Clark, James S. Clark Department of Biology and Nicholas School of the Environment, Duke University, Durham, North Carolina 27708 USA University Program in Ecology, Duke University, Durham, North Carolina 27708 USASearch for more papers by this authorJacqueline Mohan, Jacqueline Mohan University Program in Ecology, Duke University, Durham, North Carolina 27708 USASearch for more papers by this authorMichael Dietze, Michael Dietze University Program in Ecology, Duke University, Durham, North Carolina 27708 USASearch for more papers by this authorInes Ibanez, Ines Ibanez University Program in Ecology, Duke University, Durham, North Carolina 27708 USASearch for more papers by this author James S. Clark, James S. Clark Department of Biology and Nicholas School of the Environment, Duke University, Durham, North Carolina 27708 USA University Program in Ecology, Duke University, Durham, North Carolina 27708 USASearch for more papers by this authorJacqueline Mohan, Jacqueline Mohan University Program in Ecology, Duke University, Durham, North Carolina 27708 USASearch for more papers by this authorMichael Dietze, Michael Dietze University Program in Ecology, Duke University, Durham, North Carolina 27708 USASearch for more papers by this authorInes Ibanez, Ines Ibanez University Program in Ecology, Duke University, Durham, North Carolina 27708 USASearch for more papers by this author First published: 01 January 2003 https://doi.org/10.1890/0012-9658(2003)084[0017:CHTITT]2.0.CO;2Citations: 86Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Analyses of growth response to resource availability are the basis for interpreting whether trophic trade-offs contribute to diversity. If different species respond most to resources that are limiting at different times, then those differences may trade off with other trophic or life-history traits that, together, help to maintain diversity. The statistical models used to infer trophic differences do not accommodate uncertainty in resources and variability in how individuals use resources. We provide hierarchical models for resource–growth responses that accommodate stochasticity in parameters and in data, despite the fact that causes are typically unknown. A complex joint posterior distribution taken over >102 parameters is readily integrated to provide a comprehensive accounting of uncertainty in the growth response, together with a small number of hyperparameters that summarize the population response. An application involving seedling growth response to light availability shows that large trophic differences among species suggested by traditional models can be an artifact of the assumption that all individuals respond identically. The hierarchical analysis indicates broad trophic overlap, with the implication that slow dynamics play a more important role in preserving diversity than is widely believed. Corresponding Editor: A. M. Ellison. Citing Literature Supporting Information Filename Description https://dx.doi.org/10.6084/m9.figshare.c.3297716 Research data pertaining to this article is located at figshare.com: Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume84, Issue1January 2003Pages 17-31 RelatedInformation