Bivalve mollusk assemblages on São Paulo's northern continental shelf, southeast Brazil
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | |
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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Brazilian Journal of Biology |
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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 |
_version_ |
1752129875860258816 |