Spatial pattern of benthic macrofauna in a sub-tropical shelf, São Sebastião Channel, southeastern Brazil

Diversity and community organization of the benthic macrofauna were investigated along the São Sebastião Channel, northern coast of São Paulo State, Brazil, and related to sedimentary variables and organic load. These important outstanding soft bottom benthic habitats are characterized by their clos...

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Autores principales:	Pires-Vanin,Ana Maria S, Arasaki,Emilia, Muniz,Pablo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2013
Materias:	diversity macrofauna continental shelf São Sebastião Channel Brazil South Atlantic Ocean
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000100003
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spelling	oai:scielo:S0718-560X20130001000032013-08-01Spatial pattern of benthic macrofauna in a sub-tropical shelf, São Sebastião Channel, southeastern BrazilPires-Vanin,Ana Maria SArasaki,EmiliaMuniz,Pablo diversity macrofauna continental shelf São Sebastião Channel Brazil South Atlantic Ocean Diversity and community organization of the benthic macrofauna were investigated along the São Sebastião Channel, northern coast of São Paulo State, Brazil, and related to sedimentary variables and organic load. These important outstanding soft bottom benthic habitats are characterized by their close proximity to sources of human impact. Sampling was undertaken seasonally, using a Van Veen grab (0.1 m²) in 15 oceanographic stations, from November 1993 to August 1994. A total of 392 species were recorded and polychaetes completed nearly 50% of the fauna. Twenty three species were most numerous and frequent and comprised the baseline pool for the area. Sites were classified with respect to sediments in three site-groupings according to Arasaki et al. (2004). The finest-sediment site-group had significantly fewer species than coarser site-groups. The stations locate at the south opening and in the axis of the channel presented sediments with organic matter predominantly of marine origin, indicating the flow of open sea waters across the channel. These places showed also higher values of diversity and species richness. The site-group located along the insular side and in the channel north mouth, stood out for the significantly higher density. Although its relative small area the channel presented species richness similar to that found in the adjacent inner continental shelf. Comparisons between channel and adjacent shelf habitats are addressed in the light of ecological data.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.41 n.1 20132013-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000100003en103856/vol41-issue1-fulltext-3
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	diversity macrofauna continental shelf São Sebastião Channel Brazil South Atlantic Ocean
spellingShingle	diversity macrofauna continental shelf São Sebastião Channel Brazil South Atlantic Ocean Pires-Vanin,Ana Maria S Arasaki,Emilia Muniz,Pablo Spatial pattern of benthic macrofauna in a sub-tropical shelf, São Sebastião Channel, southeastern Brazil
description	Diversity and community organization of the benthic macrofauna were investigated along the São Sebastião Channel, northern coast of São Paulo State, Brazil, and related to sedimentary variables and organic load. These important outstanding soft bottom benthic habitats are characterized by their close proximity to sources of human impact. Sampling was undertaken seasonally, using a Van Veen grab (0.1 m²) in 15 oceanographic stations, from November 1993 to August 1994. A total of 392 species were recorded and polychaetes completed nearly 50% of the fauna. Twenty three species were most numerous and frequent and comprised the baseline pool for the area. Sites were classified with respect to sediments in three site-groupings according to Arasaki et al. (2004). The finest-sediment site-group had significantly fewer species than coarser site-groups. The stations locate at the south opening and in the axis of the channel presented sediments with organic matter predominantly of marine origin, indicating the flow of open sea waters across the channel. These places showed also higher values of diversity and species richness. The site-group located along the insular side and in the channel north mouth, stood out for the significantly higher density. Although its relative small area the channel presented species richness similar to that found in the adjacent inner continental shelf. Comparisons between channel and adjacent shelf habitats are addressed in the light of ecological data.
author	Pires-Vanin,Ana Maria S Arasaki,Emilia Muniz,Pablo
author_facet	Pires-Vanin,Ana Maria S Arasaki,Emilia Muniz,Pablo
author_sort	Pires-Vanin,Ana Maria S
title	Spatial pattern of benthic macrofauna in a sub-tropical shelf, São Sebastião Channel, southeastern Brazil
title_short	Spatial pattern of benthic macrofauna in a sub-tropical shelf, São Sebastião Channel, southeastern Brazil
title_full	Spatial pattern of benthic macrofauna in a sub-tropical shelf, São Sebastião Channel, southeastern Brazil
title_fullStr	Spatial pattern of benthic macrofauna in a sub-tropical shelf, São Sebastião Channel, southeastern Brazil
title_full_unstemmed	Spatial pattern of benthic macrofauna in a sub-tropical shelf, São Sebastião Channel, southeastern Brazil
title_sort	spatial pattern of benthic macrofauna in a sub-tropical shelf, são sebastião channel, southeastern brazil
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000100003
work_keys_str_mv	AT piresvaninanamarias spatialpatternofbenthicmacrofaunainasubtropicalshelfsaosebastiaochannelsoutheasternbrazil AT arasakiemilia spatialpatternofbenthicmacrofaunainasubtropicalshelfsaosebastiaochannelsoutheasternbrazil AT munizpablo spatialpatternofbenthicmacrofaunainasubtropicalshelfsaosebastiaochannelsoutheasternbrazil
_version_	1714205103467003904

Spatial pattern of benthic macrofauna in a sub-tropical shelf, São Sebastião Channel, southeastern Brazil

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