Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel)

Autores
Aguirre, Gaston Ezequiel; Capitanio, Fabiana Lia; Lovrich, Gustavo Alejandro; Esnal, Graciela Beatriz
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The aim of this study was to analyse the variability in the species composition and abundance of the metazooplankton community in different coastal areas of the Beagle Channel (southern tip of South America) during a seasonal cycle. Sampling was conducted during November (spring) 2005, March (summer), June (autumn) and September (winter) 2006 at 12 coastal stations. Copepods were the most abundant group throughout the study, and their assemblages were composed of a mixture of species typical of the south-western Atlantic, the south-eastern Pacific and the Southern Ocean. Among them, Oithona similis, Ctenocalanus citer and Drepanopus forcipatus were the dominant species. The copepod Acartia tonsa was the only taxon that displayed a spatial pattern of abundance, showing higher densities in areas with lower salinities. The community structure showed a strong temporal pattern. The metazooplankton community in March and June was mainly composed of copepods, while in November and September the community showed a greater diversity. In these two months high densities of meroplanktonic larvae were found, in coincidence with higher chlorophyll-a concentration. This temporal pattern seems to be more dependent on primary production than on physical factors such as temperature or salinity. The absence of a clear spatial pattern may suggest that the studied area of the Beagle Channel behaves as a semi-enclosed water body.
Fil: Aguirre, Gaston Ezequiel. Alfred Wegener Institute for Polar and Marine Research; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Capitanio, Fabiana Lia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lovrich, Gustavo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Esnal, Graciela Beatriz. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Zooplankton
Community Structure
Beagle Channel
Sub-Antartic
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/12749
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel)Aguirre, Gaston EzequielCapitanio, Fabiana LiaLovrich, Gustavo AlejandroEsnal, Graciela BeatrizZooplanktonCommunity StructureBeagle ChannelSub-Antartichttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The aim of this study was to analyse the variability in the species composition and abundance of the metazooplankton community in different coastal areas of the Beagle Channel (southern tip of South America) during a seasonal cycle. Sampling was conducted during November (spring) 2005, March (summer), June (autumn) and September (winter) 2006 at 12 coastal stations. Copepods were the most abundant group throughout the study, and their assemblages were composed of a mixture of species typical of the south-western Atlantic, the south-eastern Pacific and the Southern Ocean. Among them, Oithona similis, Ctenocalanus citer and Drepanopus forcipatus were the dominant species. The copepod Acartia tonsa was the only taxon that displayed a spatial pattern of abundance, showing higher densities in areas with lower salinities. The community structure showed a strong temporal pattern. The metazooplankton community in March and June was mainly composed of copepods, while in November and September the community showed a greater diversity. In these two months high densities of meroplanktonic larvae were found, in coincidence with higher chlorophyll-a concentration. This temporal pattern seems to be more dependent on primary production than on physical factors such as temperature or salinity. The absence of a clear spatial pattern may suggest that the studied area of the Beagle Channel behaves as a semi-enclosed water body.Fil: Aguirre, Gaston Ezequiel. Alfred Wegener Institute for Polar and Marine Research; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Capitanio, Fabiana Lia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lovrich, Gustavo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Esnal, Graciela Beatriz. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaTaylor & Francis2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/12749Aguirre, Gaston Ezequiel; Capitanio, Fabiana Lia; Lovrich, Gustavo Alejandro; Esnal, Graciela Beatriz; Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel); Taylor & Francis; Marine Biology Research; 8; 4; 5-2012; 341-3531745-1000enginfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/17451000.2011.627922info:eu-repo/semantics/altIdentifier/doi/10.1080/17451000.2011.627922info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:00:22Zoai:ri.conicet.gov.ar:11336/12749instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:00:22.801CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel)
title Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel)
spellingShingle Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel)
Aguirre, Gaston Ezequiel
Zooplankton
Community Structure
Beagle Channel
Sub-Antartic
title_short Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel)
title_full Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel)
title_fullStr Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel)
title_full_unstemmed Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel)
title_sort Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel)
dc.creator.none.fl_str_mv Aguirre, Gaston Ezequiel
Capitanio, Fabiana Lia
Lovrich, Gustavo Alejandro
Esnal, Graciela Beatriz
author Aguirre, Gaston Ezequiel
author_facet Aguirre, Gaston Ezequiel
Capitanio, Fabiana Lia
Lovrich, Gustavo Alejandro
Esnal, Graciela Beatriz
author_role author
author2 Capitanio, Fabiana Lia
Lovrich, Gustavo Alejandro
Esnal, Graciela Beatriz
author2_role author
author
author
dc.subject.none.fl_str_mv Zooplankton
Community Structure
Beagle Channel
Sub-Antartic
topic Zooplankton
Community Structure
Beagle Channel
Sub-Antartic
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The aim of this study was to analyse the variability in the species composition and abundance of the metazooplankton community in different coastal areas of the Beagle Channel (southern tip of South America) during a seasonal cycle. Sampling was conducted during November (spring) 2005, March (summer), June (autumn) and September (winter) 2006 at 12 coastal stations. Copepods were the most abundant group throughout the study, and their assemblages were composed of a mixture of species typical of the south-western Atlantic, the south-eastern Pacific and the Southern Ocean. Among them, Oithona similis, Ctenocalanus citer and Drepanopus forcipatus were the dominant species. The copepod Acartia tonsa was the only taxon that displayed a spatial pattern of abundance, showing higher densities in areas with lower salinities. The community structure showed a strong temporal pattern. The metazooplankton community in March and June was mainly composed of copepods, while in November and September the community showed a greater diversity. In these two months high densities of meroplanktonic larvae were found, in coincidence with higher chlorophyll-a concentration. This temporal pattern seems to be more dependent on primary production than on physical factors such as temperature or salinity. The absence of a clear spatial pattern may suggest that the studied area of the Beagle Channel behaves as a semi-enclosed water body.
Fil: Aguirre, Gaston Ezequiel. Alfred Wegener Institute for Polar and Marine Research; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Capitanio, Fabiana Lia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lovrich, Gustavo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Esnal, Graciela Beatriz. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The aim of this study was to analyse the variability in the species composition and abundance of the metazooplankton community in different coastal areas of the Beagle Channel (southern tip of South America) during a seasonal cycle. Sampling was conducted during November (spring) 2005, March (summer), June (autumn) and September (winter) 2006 at 12 coastal stations. Copepods were the most abundant group throughout the study, and their assemblages were composed of a mixture of species typical of the south-western Atlantic, the south-eastern Pacific and the Southern Ocean. Among them, Oithona similis, Ctenocalanus citer and Drepanopus forcipatus were the dominant species. The copepod Acartia tonsa was the only taxon that displayed a spatial pattern of abundance, showing higher densities in areas with lower salinities. The community structure showed a strong temporal pattern. The metazooplankton community in March and June was mainly composed of copepods, while in November and September the community showed a greater diversity. In these two months high densities of meroplanktonic larvae were found, in coincidence with higher chlorophyll-a concentration. This temporal pattern seems to be more dependent on primary production than on physical factors such as temperature or salinity. The absence of a clear spatial pattern may suggest that the studied area of the Beagle Channel behaves as a semi-enclosed water body.
publishDate 2012
dc.date.none.fl_str_mv 2012-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/12749
Aguirre, Gaston Ezequiel; Capitanio, Fabiana Lia; Lovrich, Gustavo Alejandro; Esnal, Graciela Beatriz; Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel); Taylor & Francis; Marine Biology Research; 8; 4; 5-2012; 341-353
1745-1000
url http://hdl.handle.net/11336/12749
identifier_str_mv Aguirre, Gaston Ezequiel; Capitanio, Fabiana Lia; Lovrich, Gustavo Alejandro; Esnal, Graciela Beatriz; Seasonal variability of metazooplankton in coastal sub-Antarctic waters (Beagle Channel); Taylor & Francis; Marine Biology Research; 8; 4; 5-2012; 341-353
1745-1000
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/17451000.2011.627922
info:eu-repo/semantics/altIdentifier/doi/10.1080/17451000.2011.627922
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269635592847360
score 13.13397

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