Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)

The basin off the Bellingshausen Sea, in contrast to other better known areas such as the Antarctic Peninsula and the Ross and Weddell Seas, has been little investigated due to remoteness and the prevalence of ice for most of the year. The present study focuses on an analysis of polychaetes collecte...

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Autores: Parapar, Julio, López-Díaz, Eduardo, Gambi, María Cristina, Núñez, Jorge, Ramos, Ana
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/321527
Acceso en línea:http://hdl.handle.net/10261/321527
Access Level:acceso abierto
Palabra clave:Polychaetes
Centro Oceanográfico de Vigo
Medio Marino
Soft bottoms
Benthos
Box-corer
Distribution
BENTART cruises
Antarctica
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spelling Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)Parapar, JulioLópez-Díaz, EduardoGambi, María CristinaNúñez, JorgeRamos, AnaPolychaetesCentro Oceanográfico de VigoMedio MarinoSoft bottomsBenthosBox-corerDistributionBENTART cruisesAntarcticaThe basin off the Bellingshausen Sea, in contrast to other better known areas such as the Antarctic Peninsula and the Ross and Weddell Seas, has been little investigated due to remoteness and the prevalence of ice for most of the year. The present study focuses on an analysis of polychaetes collected from soft bottoms of this sea and off the west coast of the Antarctic Peninsula (Gerlache Strait) by means of a box-corer (25 × 25 cm) in two intensive surveys carried out during austral summers of 2002–2003 and 2005–2006 (BENTART-03 and BENTART-06). Three different polychaete assemblages were determined from the classification and ordination analyses of sampling stations based on the Bray-Curtis similarity index. One group of stations encompassed the deep stations from the shelf of the Bellingshausen Sea, the second one the shallower stations from the same area and the third one those stations located near the coast of Peter I Island and Gerlache Strait, off the Antarctic Peninsula. The environmental variables involved in segregating these groups were several sedimentary features (redox potential, gravel content) and depth. The present study provides further support to previous ones that considered the shelf of the Bellingshausen Sea as a differentiated region within the Southern Ocean, clearly distinct to the adjacent Weddell and Scott Seas and the Antarctic Peninsula.Sí202320232010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/321527reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Vigohttp://link.springer.com/article/10.1007%2Fs00300-010-0927-4info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3215272026-05-22T06:33:51Z
dc.title.none.fl_str_mv Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)
title Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)
spellingShingle Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)
Parapar, Julio
Polychaetes
Centro Oceanográfico de Vigo
Medio Marino
Soft bottoms
Benthos
Box-corer
Distribution
BENTART cruises
Antarctica
title_short Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)
title_full Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)
title_fullStr Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)
title_full_unstemmed Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)
title_sort Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)
dc.creator.none.fl_str_mv Parapar, Julio
López-Díaz, Eduardo
Gambi, María Cristina
Núñez, Jorge
Ramos, Ana
author Parapar, Julio
author_facet Parapar, Julio
López-Díaz, Eduardo
Gambi, María Cristina
Núñez, Jorge
Ramos, Ana
author_role author
author2 López-Díaz, Eduardo
Gambi, María Cristina
Núñez, Jorge
Ramos, Ana
author2_role author
author
author
author
dc.subject.none.fl_str_mv Polychaetes
Centro Oceanográfico de Vigo
Medio Marino
Soft bottoms
Benthos
Box-corer
Distribution
BENTART cruises
Antarctica
topic Polychaetes
Centro Oceanográfico de Vigo
Medio Marino
Soft bottoms
Benthos
Box-corer
Distribution
BENTART cruises
Antarctica
description The basin off the Bellingshausen Sea, in contrast to other better known areas such as the Antarctic Peninsula and the Ross and Weddell Seas, has been little investigated due to remoteness and the prevalence of ice for most of the year. The present study focuses on an analysis of polychaetes collected from soft bottoms of this sea and off the west coast of the Antarctic Peninsula (Gerlache Strait) by means of a box-corer (25 × 25 cm) in two intensive surveys carried out during austral summers of 2002–2003 and 2005–2006 (BENTART-03 and BENTART-06). Three different polychaete assemblages were determined from the classification and ordination analyses of sampling stations based on the Bray-Curtis similarity index. One group of stations encompassed the deep stations from the shelf of the Bellingshausen Sea, the second one the shallower stations from the same area and the third one those stations located near the coast of Peter I Island and Gerlache Strait, off the Antarctic Peninsula. The environmental variables involved in segregating these groups were several sedimentary features (redox potential, gravel content) and depth. The present study provides further support to previous ones that considered the shelf of the Bellingshausen Sea as a differentiated region within the Southern Ocean, clearly distinct to the adjacent Weddell and Scott Seas and the Antarctic Peninsula.
publishDate 2010
dc.date.none.fl_str_mv 2010
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/321527
url http://hdl.handle.net/10261/321527
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Vigo
http://link.springer.com/article/10.1007%2Fs00300-010-0927-4
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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