Water balance and spatial distribution of an anuran community from Brazil
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
Outros Autores: | , , |
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. |
id |
UFBA-2_a698133f79cc0813e7ba001fc9741cf2 |
---|---|
oai_identifier_str |
oai:repositorio.ufba.br:ri/13819 |
network_acronym_str |
UFBA-2 |
network_name_str |
Repositório Institucional da UFBA |
repository_id_str |
1932 |
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:ri/13819VGVybW8gZGUgTGljZW7vv71hLCBu77+9byBleGNsdXNpdm8sIHBhcmEgbyBkZXDvv71zaXRvIG5vIFJlcG9zaXTvv71yaW8gSW5zdGl0dWNpb25hbCBkYSBVRkJBLgoKIFBlbG8gcHJvY2Vzc28gZGUgc3VibWlzc++/vW8gZGUgZG9jdW1lbnRvcywgbyBhdXRvciBvdSBzZXUgcmVwcmVzZW50YW50ZSBsZWdhbCwgYW8gYWNlaXRhciAKZXNzZSB0ZXJtbyBkZSBsaWNlbu+/vWEsIGNvbmNlZGUgYW8gUmVwb3NpdO+/vXJpbyBJbnN0aXR1Y2lvbmFsIGRhIFVuaXZlcnNpZGFkZSBGZWRlcmFsIGRhIEJhaGlhIApvIGRpcmVpdG8gZGUgbWFudGVyIHVtYSBj77+9cGlhIGVtIHNldSByZXBvc2l077+9cmlvIGNvbSBhIGZpbmFsaWRhZGUsIHByaW1laXJhLCBkZSBwcmVzZXJ2Ye+/ve+/vW8uIApFc3NlcyB0ZXJtb3MsIG7vv71vIGV4Y2x1c2l2b3MsIG1hbnTvv71tIG9zIGRpcmVpdG9zIGRlIGF1dG9yL2NvcHlyaWdodCwgbWFzIGVudGVuZGUgbyBkb2N1bWVudG8gCmNvbW8gcGFydGUgZG8gYWNlcnZvIGludGVsZWN0dWFsIGRlc3NhIFVuaXZlcnNpZGFkZS4KCiBQYXJhIG9zIGRvY3VtZW50b3MgcHVibGljYWRvcyBjb20gcmVwYXNzZSBkZSBkaXJlaXRvcyBkZSBkaXN0cmlidWnvv73vv71vLCBlc3NlIHRlcm1vIGRlIGxpY2Vu77+9YSAKZW50ZW5kZSBxdWU6CgogTWFudGVuZG8gb3MgZGlyZWl0b3MgYXV0b3JhaXMsIHJlcGFzc2Fkb3MgYSB0ZXJjZWlyb3MsIGVtIGNhc28gZGUgcHVibGljYe+/ve+/vWVzLCBvIHJlcG9zaXTvv71yaW8KcG9kZSByZXN0cmluZ2lyIG8gYWNlc3NvIGFvIHRleHRvIGludGVncmFsLCBtYXMgbGliZXJhIGFzIGluZm9ybWHvv73vv71lcyBzb2JyZSBvIGRvY3VtZW50bwooTWV0YWRhZG9zIGVzY3JpdGl2b3MpLgoKIERlc3RhIGZvcm1hLCBhdGVuZGVuZG8gYW9zIGFuc2Vpb3MgZGVzc2EgdW5pdmVyc2lkYWRlIGVtIG1hbnRlciBzdWEgcHJvZHXvv73vv71vIGNpZW5077+9ZmljYSBjb20gCmFzIHJlc3Ryae+/ve+/vWVzIGltcG9zdGFzIHBlbG9zIGVkaXRvcmVzIGRlIHBlcmnvv71kaWNvcy4KCiBQYXJhIGFzIHB1YmxpY2Hvv73vv71lcyBzZW0gaW5pY2lhdGl2YXMgcXVlIHNlZ3VlbSBhIHBvbO+/vXRpY2EgZGUgQWNlc3NvIEFiZXJ0bywgb3MgZGVw77+9c2l0b3MgCmNvbXB1bHPvv71yaW9zIG5lc3NlIHJlcG9zaXTvv71yaW8gbWFudO+/vW0gb3MgZGlyZWl0b3MgYXV0b3JhaXMsIG1hcyBtYW5077+9bSBhY2Vzc28gaXJyZXN0cml0byAKYW8gbWV0YWRhZG9zIGUgdGV4dG8gY29tcGxldG8uIEFzc2ltLCBhIGFjZWl0Ye+/ve+/vW8gZGVzc2UgdGVybW8gbu+/vW8gbmVjZXNzaXRhIGRlIGNvbnNlbnRpbWVudG8KIHBvciBwYXJ0ZSBkZSBhdXRvcmVzL2RldGVudG9yZXMgZG9zIGRpcmVpdG9zLCBwb3IgZXN0YXJlbSBlbSBpbmljaWF0aXZhcyBkZSBhY2Vzc28gYWJlcnRvLgo=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 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufba.br/ri/handle/ri/13819 |
dc.identifier.issn.none.fl_str_mv |
0018-0831 |
dc.identifier.number.pt_BR.fl_str_mv |
v. 68, n. 4 |
identifier_str_mv |
0018-0831 v. 68, n. 4 |
url |
http://repositorio.ufba.br/ri/handle/ri/13819 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFBA instname:Universidade Federal da Bahia (UFBA) instacron:UFBA |
instname_str |
Universidade Federal da Bahia (UFBA) |
instacron_str |
UFBA |
institution |
UFBA |
reponame_str |
Repositório Institucional da UFBA |
collection |
Repositório Institucional da UFBA |
bitstream.url.fl_str_mv |
https://repositorio.ufba.br/bitstream/ri/13819/1/Dab%c3%a9s_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdf https://repositorio.ufba.br/bitstream/ri/13819/2/license.txt https://repositorio.ufba.br/bitstream/ri/13819/3/Dab%c3%a9s_Bonfim_Napoli_Klein_2012_HERPETOLOGICA.pdf.txt |
bitstream.checksum.fl_str_mv |
baf33bd7399f57e9a30448465fd440c0 ff6eaa8b858ea317fded99f125f5fcd0 53d3b07fc943c8c9d120b6a54f9367d3 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA) |
repository.mail.fl_str_mv |
|
_version_ |
1808459464780546048 |