WATER BALANCE and SPATIAL DISTRIBUTION of AN ANURAN COMMUNITY FROM BRAZIL

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dc.contributor.authorDabes, Lucianne
dc.contributor.authorGomes Bonfim, Vanessa Maria
dc.contributor.authorNapoli, Marcelo Felgueiras
dc.contributor.authorKlein, Wilfried [UNESP]
dc.contributor.institutionUniversidade Federal da Bahia (UFBA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:32:06Z
dc.date.available2014-05-20T15:32:06Z
dc.date.issued2012-12-01
dc.description.abstractTerrestrial amphibians may dehydrate when exposed to low humidity, representing an important factor affecting spatial distribution and community composition. In this study we investigated whether rates of dehydration and rehydration are able to explain the spatial distribution of an anuran community in a Restinga environment at the northern coast of the State of Bahia, Brazil, represented by 11 species distributed in 27 sample units. The environmental data set containing 20 variables was reduced to a few synthetic axes by principal component analysis (PCA). Physiological variables measured were rates of dehydration, rehydration from water, and rehydration from a neutral substrate. Multiple regression analyses were used to test the null hypothesis of no association between the environmental data set (synthetic axes of PCA) and each axis representative of a physiological variable, which was rejected (P < 0.001). of 15 possible partial regressions only rehydration rate from neutral substrate vs. PC1. and PC2, rehydration rate from water vs. PC1, and dehydration rate vs. PC2 were significant. Our analysis was influenced by a gradient between two different groups of sample units: a beach area with high density of bromeliads and an environment without bodies of water with low density of bromeliads. Species of very specific natural history and morphological characters occur in these environments: Phyllodytes melanomystax and Scinax auratus, species frequently occurring in terrestrial bromeliads, and Ischnocnema paulodutrai, common along the northern coast of Bahia and usually found in forest remnants within environments with low number of bodies of water. In dry environments species with lower rates of dehydration were dominant, whereas species showing greater rates of dehydration were found predominantly in microhabitats with greater moisture or abundance of bodies of water.en
dc.description.affiliationUniversidade Federal da Bahia (UFBA), Programa Posgrad Ecol & Biomonitoramento, Inst Biol, BR-40170115 Salvador, BA, Brazil
dc.description.affiliationUniversidade Federal da Bahia (UFBA), Dept Zool, Inst Biol, BR-40170115 Salvador, BA, Brazil
dc.description.affiliationUniversidade Federal da Bahia (UFBA), Museu Zool, Inst Biol, BR-40170115 Salvador, BA, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Nacl Ciência & Tecnol Fisiol Comparada, São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Nacl Ciência & Tecnol Fisiol Comparada, São Paulo, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado da Bahia (FAPESB)
dc.description.sponsorshipIdFAPESB: 302542/2008-6
dc.format.extent443-455
dc.identifierhttp://dx.doi.org/10.1655/HERPETOLOGICA-D-10-00058
dc.identifier.citationHerpetologica. Emporia: Herpetologists League, v. 68, n. 4, p. 443-455, 2012.
dc.identifier.doi10.1655/HERPETOLOGICA-D-10-00058
dc.identifier.issn0018-0831
dc.identifier.urihttp://hdl.handle.net/11449/41096
dc.identifier.wosWOS:000312349200001
dc.language.isoeng
dc.publisherHerpetologists League
dc.relation.ispartofHerpetologica
dc.relation.ispartofjcr1.013
dc.relation.ispartofsjr0,518
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectAmphibiaen
dc.subjectDehydrationen
dc.subjectEvaporative water lossen
dc.subjectHabitaten
dc.subjectRehydrationen
dc.subjectWater absorptionen
dc.subjectWater balanceen
dc.titleWATER BALANCE and SPATIAL DISTRIBUTION of AN ANURAN COMMUNITY FROM BRAZILen
dc.typeArtigo
dcterms.licensehttp://www.bioone.org/page/terms_of_use
dcterms.rightsHolderHerpetologists League
unesp.author.orcid0000-0003-3843-0543[3]
unesp.author.orcid0000-0001-6099-6178[4]

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