Water balance and spatial distribution of an anuran community from Brazil

Detalhes bibliográficos
Autor(a) principal: Dabés, Lucianne
Data de Publicação: 2012
Outros Autores: Bonfim, Vanessa Maria Gomes, Napoli, Marcelo Felgueiras, Klein, Wilfried
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/13819
Resumo: Terrestrial 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.
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spelling Dabés, LucianneBonfim, Vanessa Maria GomesNapoli, Marcelo FelgueirasKlein, WilfriedDabés, LucianneBonfim, Vanessa Maria GomesNapoli, Marcelo FelgueirasKlein, Wilfried2013-11-20T19:23:14Z20120018-0831http://repositorio.ufba.br/ri/handle/ri/13819v. 68, n. 4Terrestrial 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.Submitted by Napoli Marcelo (napoli@ufba.br) on 2013-11-18T11:12:33Z No. of bitstreams: 1 Dabés_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdf: 350308 bytes, checksum: baf33bd7399f57e9a30448465fd440c0 (MD5)Approved for entry into archive by Rodrigo Meirelles (rodrigomei@ufba.br) on 2013-11-20T19:23:14Z (GMT) No. of bitstreams: 1 Dabés_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdf: 350308 bytes, checksum: baf33bd7399f57e9a30448465fd440c0 (MD5)Made available in DSpace on 2013-11-20T19:23:14Z (GMT). No. of bitstreams: 1 Dabés_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdf: 350308 bytes, checksum: baf33bd7399f57e9a30448465fd440c0 (MD5) Previous issue date: 2012The Conselho Nacional de Desenvolvimento Científico e Tecnológico and the Fundação de Ampara à Pesquisa do Estado da Bahia for fellowships to MFN (proc. 302542/2008–6) and LD, respectively.AmphibiaDehydrationEvaporative water lossHabitatRehydrationWater absorptionWater balanceWater balance and spatial distribution of an anuran community from BrazilHerpetologicainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAORIGINALDabés_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdfDabés_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdfapplication/pdf350308https://repositorio.ufba.br/bitstream/ri/13819/1/Dab%c3%a9s_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdfbaf33bd7399f57e9a30448465fd440c0MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/13819/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXTDabés_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdf.txtDabés_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdf.txtExtracted texttext/plain54950https://repositorio.ufba.br/bitstream/ri/13819/3/Dab%c3%a9s_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdf.txt53d3b07fc943c8c9d120b6a54f9367d3MD53ri/138192022-08-08 13:17:50.322oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-08-08T16:17:50Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Water balance and spatial distribution of an anuran community from Brazil
dc.title.alternative.none.fl_str_mv Herpetologica
title Water balance and spatial distribution of an anuran community from Brazil
spellingShingle Water balance and spatial distribution of an anuran community from Brazil
Dabés, Lucianne
Amphibia
Dehydration
Evaporative water loss
Habitat
Rehydration
Water absorption
Water balance
title_short Water balance and spatial distribution of an anuran community from Brazil
title_full Water balance and spatial distribution of an anuran community from Brazil
title_fullStr Water balance and spatial distribution of an anuran community from Brazil
title_full_unstemmed Water balance and spatial distribution of an anuran community from Brazil
title_sort Water balance and spatial distribution of an anuran community from Brazil
author Dabés, Lucianne
author_facet Dabés, Lucianne
Bonfim, Vanessa Maria Gomes
Napoli, Marcelo Felgueiras
Klein, Wilfried
author_role author
author2 Bonfim, Vanessa Maria Gomes
Napoli, Marcelo Felgueiras
Klein, Wilfried
author2_role author
author
author
dc.contributor.author.fl_str_mv Dabés, Lucianne
Bonfim, Vanessa Maria Gomes
Napoli, Marcelo Felgueiras
Klein, Wilfried
Dabés, Lucianne
Bonfim, Vanessa Maria Gomes
Napoli, Marcelo Felgueiras
Klein, Wilfried
dc.subject.por.fl_str_mv Amphibia
Dehydration
Evaporative water loss
Habitat
Rehydration
Water absorption
Water balance
topic Amphibia
Dehydration
Evaporative water loss
Habitat
Rehydration
Water absorption
Water balance
description Terrestrial 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.
publishDate 2012
dc.date.issued.fl_str_mv 2012
dc.date.accessioned.fl_str_mv 2013-11-20T19:23:14Z
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dc.identifier.issn.none.fl_str_mv 0018-0831
dc.identifier.number.pt_BR.fl_str_mv v. 68, n. 4
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