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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/116967
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dc.contributor.authorAmarasekare, Priyanga-
dc.contributor.authorCoutinho, Renato M.-
dc.date.accessioned2015-03-18T15:54:35Z-
dc.date.accessioned2016-10-25T20:28:30Z-
dc.date.available2015-03-18T15:54:35Z-
dc.date.available2016-10-25T20:28:30Z-
dc.date.issued2014-09-01-
dc.identifierhttp://dx.doi.org/10.1086/677386-
dc.identifier.citationAmerican Naturalist. Chicago: Univ Chicago Press, v. 184, n. 3, p. E50-E65, 2014.-
dc.identifier.issn0003-0147-
dc.identifier.urihttp://hdl.handle.net/11449/116967-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/116967-
dc.description.abstractUnderstanding how temperature influences population regulation through its effects on intraspecific competition is an important question for which there is currently little theory or data. Here we develop a theoretical framework for elucidating temperature effects on competition that integrates mechanistic descriptions of life-history trait responses to temperature with population models that realistically capture the variable developmental delays that characterize ectotherm life cycles. This framework yields testable comparative predictions about how intraspecific competition affects reproduction, development, and mortality under alternative hypotheses about the temperature dependence of competition. The key finding is that ectotherm population regulation in seasonal environments depends crucially on the mechanisms by which temperature affects competition. When competition is strongest at temperatures optimal for reproduction, effects of temperature and competition act antagonistically, leading to more complex dynamics than when competition is temperature independent. When the strength of competition increases with temperature past the optimal temperature for reproduction, effects of temperature and competition act synergistically, leading to dynamics qualitatively similar to those when competition is temperature independent. Paradoxically, antagonistic effects yield a higher population floor despite greater fluctuations. These findings have important implications for predicting effects of climate warming on population regulation. Synergistic effects of temperature and competition can predispose populations to stochastic extinction by lowering minimum population sizes, while antagonistic effects can increase the potential for population outbreaks through greater fluctuations in abundance.en
dc.description.sponsorshipJames S. McDonnell Foundation-
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipInternational Centre for Theoretical Physics-South American Institute for Fundamental Research (Sao Paulo)-
dc.format.extentE50-E65-
dc.language.isoeng-
dc.publisherUniv Chicago Press-
dc.sourceWeb of Science-
dc.subjectectothermen
dc.subjectintraspecific competitionen
dc.subjectpopulation dynamicsen
dc.subjectseasonalityen
dc.subjecttemperatureen
dc.subjecttemperature variationen
dc.titleEffects of Temperature on Intraspecific Competition in Ectothermsen
dc.typeoutro-
dc.contributor.institutionUniv Calif Los Angeles-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA 90095 USA-
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil-
dc.identifier.doi10.1086/677386-
dc.identifier.wosWOS:000340844300001-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofAmerican Naturalist-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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