Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazil

Detalhes bibliográficos
Autor(a) principal: Soares-Gomes,A.
Data de Publicação: 2005
Outros Autores: Pires-Vanin,A. M. S.
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=S1519-69842005000400019
Resumo: Soft bottom bivalve mollusc assemblages were sampled along a depth gradient (10 to 100 m) on the northern São Paulo shelf during the austral summer and winter. A one-way analysis of similarity permutation test revealed there was no seasonal difference in the structure of the bivalve assemblages in the area. A clustering analysis indicated 3 groups of stations corresponding to the bathymetric gradient. Both K-dominance curves and Shannon and Pielou indexes showed higher biological diversity and higher evenness for the shallower area. Most of the bivalves found were classified as suspension-feeders, co-occurring with deposit-feeder species, suggesting an absence of negative interactions between these trophic groups. Differences in the frequency of disturbance along the depth gradient caused by wave storms - more common in winter - and also by predation and anthropogenic activities, such as dredging of fishing boats and input of gross sewage, likely explain the higher diversity found on the inner shelf of Ubatuba.
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spelling Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazilsoft bottomsublittoralbiodiversityspatial distributionmacrobenthosSoft bottom bivalve mollusc assemblages were sampled along a depth gradient (10 to 100 m) on the northern São Paulo shelf during the austral summer and winter. A one-way analysis of similarity permutation test revealed there was no seasonal difference in the structure of the bivalve assemblages in the area. A clustering analysis indicated 3 groups of stations corresponding to the bathymetric gradient. Both K-dominance curves and Shannon and Pielou indexes showed higher biological diversity and higher evenness for the shallower area. Most of the bivalves found were classified as suspension-feeders, co-occurring with deposit-feeder species, suggesting an absence of negative interactions between these trophic groups. Differences in the frequency of disturbance along the depth gradient caused by wave storms - more common in winter - and also by predation and anthropogenic activities, such as dredging of fishing boats and input of gross sewage, likely explain the higher diversity found on the inner shelf of Ubatuba.Instituto Internacional de Ecologia2005-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842005000400019Brazilian Journal of Biology v.65 n.4 2005reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/S1519-69842005000400019info:eu-repo/semantics/openAccessSoares-Gomes,A.Pires-Vanin,A. M. S.eng2006-03-06T00:00:00Zoai:scielo:S1519-69842005000400019Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2006-03-06T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false
dc.title.none.fl_str_mv Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazil
title Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazil
spellingShingle Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazil
Soares-Gomes,A.
soft bottom
sublittoral
biodiversity
spatial distribution
macrobenthos
title_short Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazil
title_full Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazil
title_fullStr Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazil
title_full_unstemmed Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazil
title_sort Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazil
author Soares-Gomes,A.
author_facet Soares-Gomes,A.
Pires-Vanin,A. M. S.
author_role author
author2 Pires-Vanin,A. M. S.
author2_role author
dc.contributor.author.fl_str_mv Soares-Gomes,A.
Pires-Vanin,A. M. S.
dc.subject.por.fl_str_mv soft bottom
sublittoral
biodiversity
spatial distribution
macrobenthos
topic soft bottom
sublittoral
biodiversity
spatial distribution
macrobenthos
description Soft bottom bivalve mollusc assemblages were sampled along a depth gradient (10 to 100 m) on the northern São Paulo shelf during the austral summer and winter. A one-way analysis of similarity permutation test revealed there was no seasonal difference in the structure of the bivalve assemblages in the area. A clustering analysis indicated 3 groups of stations corresponding to the bathymetric gradient. Both K-dominance curves and Shannon and Pielou indexes showed higher biological diversity and higher evenness for the shallower area. Most of the bivalves found were classified as suspension-feeders, co-occurring with deposit-feeder species, suggesting an absence of negative interactions between these trophic groups. Differences in the frequency of disturbance along the depth gradient caused by wave storms - more common in winter - and also by predation and anthropogenic activities, such as dredging of fishing boats and input of gross sewage, likely explain the higher diversity found on the inner shelf of Ubatuba.
publishDate 2005
dc.date.none.fl_str_mv 2005-11-01
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=S1519-69842005000400019
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842005000400019
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1519-69842005000400019
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.65 n.4 2005
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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