Fish-assemblage structure of the Corumbatai river basin, São Paulo State, Brazil: characterization and anthropogenic disturbances

Detalhes bibliográficos
Autor(a) principal: Cetra,M.
Data de Publicação: 2006
Outros Autores: Petrete Jr.,M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Biology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842006000300007
Resumo: The Corumbataí river is one of the main tributaries of the right margin of the Piracicaba river, itself a tributary of Tietê river. The Corumbataí is part of the Paraná river basin and is regionally important not only because of its good-quality water but also because the local landscape has unique features. This study aimed to characterize the fish assemblage of the Corumbataí in order to provide background data for evaluating its environmental status. For this purpose, within the Corumbatai river basin 4 of the main rivers were chosen, along which 3 sampling points each were established. Twenty-four samplings were carried out during March-July and September-December 2001. Diversity measures were used to evaluate biotic data. A linear ANCOVA model was used to test the hypothesis of a spatio-temporal variation in the fish assemblage, with species richness as the response variable, river order as the factor, and temperature and the natural logarithm of number of individuals as covariates. This analysis showed a spatio-temporal variation in agreement with various concepts, e.g., the specie-area relationship and the river continuum, which have been exhaustively discussed in the literature. When compared to those of the other rivers, data from the Ribeirão Claro river showed a different pattern, probably due to human interference, and exemplifying aquatic habitat fragmentation that might have led to isolation of local fish populations.
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spelling Fish-assemblage structure of the Corumbatai river basin, São Paulo State, Brazil: characterization and anthropogenic disturbancesParaná river basinCorumbataí riverfish assemblagespecies diversityhabitat fragmentationThe Corumbataí river is one of the main tributaries of the right margin of the Piracicaba river, itself a tributary of Tietê river. The Corumbataí is part of the Paraná river basin and is regionally important not only because of its good-quality water but also because the local landscape has unique features. This study aimed to characterize the fish assemblage of the Corumbataí in order to provide background data for evaluating its environmental status. For this purpose, within the Corumbatai river basin 4 of the main rivers were chosen, along which 3 sampling points each were established. Twenty-four samplings were carried out during March-July and September-December 2001. Diversity measures were used to evaluate biotic data. A linear ANCOVA model was used to test the hypothesis of a spatio-temporal variation in the fish assemblage, with species richness as the response variable, river order as the factor, and temperature and the natural logarithm of number of individuals as covariates. This analysis showed a spatio-temporal variation in agreement with various concepts, e.g., the specie-area relationship and the river continuum, which have been exhaustively discussed in the literature. When compared to those of the other rivers, data from the Ribeirão Claro river showed a different pattern, probably due to human interference, and exemplifying aquatic habitat fragmentation that might have led to isolation of local fish populations.Instituto Internacional de Ecologia2006-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842006000300007Brazilian Journal of Biology v.66 n.2a 2006reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/S1519-69842006000300007info:eu-repo/semantics/openAccessCetra,M.Petrete Jr.,M.eng2006-07-17T00:00:00Zoai:scielo:S1519-69842006000300007Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2006-07-17T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false
dc.title.none.fl_str_mv Fish-assemblage structure of the Corumbatai river basin, São Paulo State, Brazil: characterization and anthropogenic disturbances
title Fish-assemblage structure of the Corumbatai river basin, São Paulo State, Brazil: characterization and anthropogenic disturbances
spellingShingle Fish-assemblage structure of the Corumbatai river basin, São Paulo State, Brazil: characterization and anthropogenic disturbances
Cetra,M.
Paraná river basin
Corumbataí river
fish assemblage
species diversity
habitat fragmentation
title_short Fish-assemblage structure of the Corumbatai river basin, São Paulo State, Brazil: characterization and anthropogenic disturbances
title_full Fish-assemblage structure of the Corumbatai river basin, São Paulo State, Brazil: characterization and anthropogenic disturbances
title_fullStr Fish-assemblage structure of the Corumbatai river basin, São Paulo State, Brazil: characterization and anthropogenic disturbances
title_full_unstemmed Fish-assemblage structure of the Corumbatai river basin, São Paulo State, Brazil: characterization and anthropogenic disturbances
title_sort Fish-assemblage structure of the Corumbatai river basin, São Paulo State, Brazil: characterization and anthropogenic disturbances
author Cetra,M.
author_facet Cetra,M.
Petrete Jr.,M.
author_role author
author2 Petrete Jr.,M.
author2_role author
dc.contributor.author.fl_str_mv Cetra,M.
Petrete Jr.,M.
dc.subject.por.fl_str_mv Paraná river basin
Corumbataí river
fish assemblage
species diversity
habitat fragmentation
topic Paraná river basin
Corumbataí river
fish assemblage
species diversity
habitat fragmentation
description The Corumbataí river is one of the main tributaries of the right margin of the Piracicaba river, itself a tributary of Tietê river. The Corumbataí is part of the Paraná river basin and is regionally important not only because of its good-quality water but also because the local landscape has unique features. This study aimed to characterize the fish assemblage of the Corumbataí in order to provide background data for evaluating its environmental status. For this purpose, within the Corumbatai river basin 4 of the main rivers were chosen, along which 3 sampling points each were established. Twenty-four samplings were carried out during March-July and September-December 2001. Diversity measures were used to evaluate biotic data. A linear ANCOVA model was used to test the hypothesis of a spatio-temporal variation in the fish assemblage, with species richness as the response variable, river order as the factor, and temperature and the natural logarithm of number of individuals as covariates. This analysis showed a spatio-temporal variation in agreement with various concepts, e.g., the specie-area relationship and the river continuum, which have been exhaustively discussed in the literature. When compared to those of the other rivers, data from the Ribeirão Claro river showed a different pattern, probably due to human interference, and exemplifying aquatic habitat fragmentation that might have led to isolation of local fish populations.
publishDate 2006
dc.date.none.fl_str_mv 2006-05-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842006000300007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842006000300007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1519-69842006000300007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto Internacional de Ecologia
publisher.none.fl_str_mv Instituto Internacional de Ecologia
dc.source.none.fl_str_mv Brazilian Journal of Biology v.66 n.2a 2006
reponame:Brazilian Journal of Biology
instname:Instituto Internacional de Ecologia (IIE)
instacron:IIE
instname_str Instituto Internacional de Ecologia (IIE)
instacron_str IIE
institution IIE
reponame_str Brazilian Journal of Biology
collection Brazilian Journal of Biology
repository.name.fl_str_mv Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)
repository.mail.fl_str_mv bjb@bjb.com.br||bjb@bjb.com.br
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