Equilibrium of global amphibian species distributions with climate

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dc.creatorManguía, Mariana
dc.creatorRahbek, Carsten
dc.creatorRangel, Thiago Fernando Lopes do Valle de Britto
dc.creatorDiniz Filho, José Alexandre Felizola
dc.creatorAraújo, Miguel Bastos
dc.date.accessioned2017-04-04T12:38:09Z
dc.date.available2017-04-04T12:38:09Z
dc.date.issued2012-04
dc.description.abstractA common assumption in bioclimatic envelope modeling is that species distributions are in equilibrium with contemporary climate. A number of studies have measured departures from equilibrium in species distributions in particular regions, but such investigations were never carried out for a complete lineage across its entire distribution. We measure departures of equilibrium with contemporary climate for the distributions of the world amphibian species. Specifically, we fitted bioclimatic envelopes for 5544 species using three presence-only models. We then measured the proportion of the modeled envelope that is currently occupied by the species, as a metric of equilibrium of species distributions with climate. The assumption was that the greater the difference between modeled bioclimatic envelope and the occupied distribution, the greater the likelihood that species distribution would not be at equilibrium with contemporary climate. On average, amphibians occupied 30% to 57% of their potential distributions. Although patterns differed across regions, there were no significant differences among lineages. Species in the Neotropic, Afrotropics, Indo-Malay, and Palaearctic occupied a smaller proportion of their potential distributions than species in the Nearctic, Madagascar, and Australasia. We acknowledge that our models underestimate non equilibrium, and discuss potential reasons for the observed patterns. From a modeling perspective our results support the view that at global scale bioclimatic envelope models might perform similarly across lineages but differently across regions.pt_BR
dc.identifier.citationMUNGUÍA, Mariana; RAHBEK, Carsten; RANGEL, Thiago F.; DINIZ FILHO, José Alexandre F.; ARAÚJO, Miguel B. Equilibrium of global amphibian species distributions with climate. PlosOne, San Francisco, v. 7, n. 4, p. e34420, Apr. 2012.pt_BR
dc.identifier.doi10.1371/journal.pone.0034420
dc.identifier.issne- 1932-6203
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/11701
dc.language.isoengpt_BR
dc.publisherPublic Library of Sciencept_BR
dc.publisher.countryEstados unidospt_BR
dc.publisher.departmentInstituto de Ciências Biológicas - ICB (RG)pt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectBioclimates envelopespt_BR
dc.subjectContemporany climatept_BR
dc.subjectAmphibianspt_BR
dc.titleEquilibrium of global amphibian species distributions with climatept_BR
dc.typeArtigopt_BR

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