Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer

Autores
Thompson, Gustavo Ariel; Dinofrio, Estela O.; Alder, Viviana Andrea
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The relative importance of small forms of copepods has been historically underestimated by the traditional use of 200-300-μm mesh nets. This work quantified the distribution and abundance of copepods, considering two size fractions (<300 μm and >300 μm), in superficial waters (9 m deep) of the Drake Passage and contributed to the knowledge of their interannual fluctuations among three summers. Four types of nauplii and eleven species of copepods at copepodite and adult stages were identified, with abundance values of up to 13 ind L -1 and 28,300 μg C m -3. The <300-μm fraction, composed of Oithona similis, small cyclopoids and nauplii, dominated the copepod communities in the 3 years; it accounted for more than 77% of the total number and for between 40 and 63% of the total biomass. Changes in density and biomass values among the three cruises differed according to copepod size fraction and water mass; the >300-μm fraction showed no changes among the 3 years, both in Antarctic (density and biomass) and in Subantarctic waters (density), whereas the <300-μm fraction showed higher (density and biomass) values in 2001 both in Subantarctic and in Antarctic waters. Sea surface temperature and its anomaly accounted for the largest proportion of variability in copepod density and biomass, particularly for the <300-μm fraction.
Fil: Thompson, Gustavo Ariel. 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: Dinofrio, Estela O.. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Alder, Viviana Andrea. 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
Biomass
Copepods
Density
Drake Passage
Interannual Fluctuations
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/68848
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summerThompson, Gustavo ArielDinofrio, Estela O.Alder, Viviana AndreaBiomassCopepodsDensityDrake PassageInterannual Fluctuationshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The relative importance of small forms of copepods has been historically underestimated by the traditional use of 200-300-μm mesh nets. This work quantified the distribution and abundance of copepods, considering two size fractions (<300 μm and >300 μm), in superficial waters (9 m deep) of the Drake Passage and contributed to the knowledge of their interannual fluctuations among three summers. Four types of nauplii and eleven species of copepods at copepodite and adult stages were identified, with abundance values of up to 13 ind L -1 and 28,300 μg C m -3. The <300-μm fraction, composed of Oithona similis, small cyclopoids and nauplii, dominated the copepod communities in the 3 years; it accounted for more than 77% of the total number and for between 40 and 63% of the total biomass. Changes in density and biomass values among the three cruises differed according to copepod size fraction and water mass; the >300-μm fraction showed no changes among the 3 years, both in Antarctic (density and biomass) and in Subantarctic waters (density), whereas the <300-μm fraction showed higher (density and biomass) values in 2001 both in Subantarctic and in Antarctic waters. Sea surface temperature and its anomaly accounted for the largest proportion of variability in copepod density and biomass, particularly for the <300-μm fraction.Fil: Thompson, Gustavo Ariel. 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: Dinofrio, Estela O.. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Alder, Viviana Andrea. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaBioMed Central2012-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68848Thompson, Gustavo Ariel; Dinofrio, Estela O.; Alder, Viviana Andrea; Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer; BioMed Central; Helgoland Marine Research; 66; 2; 6-2012; 127-1381438-387X1438-3888CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s10152-011-0253-4info:eu-repo/semantics/altIdentifier/url/https://hmr.biomedcentral.com/articles/10.1007/s10152-011-0253-4info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:42:16Zoai:ri.conicet.gov.ar:11336/68848instacron: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:34982025-09-17 11:42:17.112CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer
title Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer
spellingShingle Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer
Thompson, Gustavo Ariel
Biomass
Copepods
Density
Drake Passage
Interannual Fluctuations
title_short Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer
title_full Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer
title_fullStr Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer
title_full_unstemmed Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer
title_sort Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer
dc.creator.none.fl_str_mv Thompson, Gustavo Ariel
Dinofrio, Estela O.
Alder, Viviana Andrea
author Thompson, Gustavo Ariel
author_facet Thompson, Gustavo Ariel
Dinofrio, Estela O.
Alder, Viviana Andrea
author_role author
author2 Dinofrio, Estela O.
Alder, Viviana Andrea
author2_role author
author
dc.subject.none.fl_str_mv Biomass
Copepods
Density
Drake Passage
Interannual Fluctuations
topic Biomass
Copepods
Density
Drake Passage
Interannual Fluctuations
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 relative importance of small forms of copepods has been historically underestimated by the traditional use of 200-300-μm mesh nets. This work quantified the distribution and abundance of copepods, considering two size fractions (<300 μm and >300 μm), in superficial waters (9 m deep) of the Drake Passage and contributed to the knowledge of their interannual fluctuations among three summers. Four types of nauplii and eleven species of copepods at copepodite and adult stages were identified, with abundance values of up to 13 ind L -1 and 28,300 μg C m -3. The <300-μm fraction, composed of Oithona similis, small cyclopoids and nauplii, dominated the copepod communities in the 3 years; it accounted for more than 77% of the total number and for between 40 and 63% of the total biomass. Changes in density and biomass values among the three cruises differed according to copepod size fraction and water mass; the >300-μm fraction showed no changes among the 3 years, both in Antarctic (density and biomass) and in Subantarctic waters (density), whereas the <300-μm fraction showed higher (density and biomass) values in 2001 both in Subantarctic and in Antarctic waters. Sea surface temperature and its anomaly accounted for the largest proportion of variability in copepod density and biomass, particularly for the <300-μm fraction.
Fil: Thompson, Gustavo Ariel. 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: Dinofrio, Estela O.. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Alder, Viviana Andrea. 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 relative importance of small forms of copepods has been historically underestimated by the traditional use of 200-300-μm mesh nets. This work quantified the distribution and abundance of copepods, considering two size fractions (<300 μm and >300 μm), in superficial waters (9 m deep) of the Drake Passage and contributed to the knowledge of their interannual fluctuations among three summers. Four types of nauplii and eleven species of copepods at copepodite and adult stages were identified, with abundance values of up to 13 ind L -1 and 28,300 μg C m -3. The <300-μm fraction, composed of Oithona similis, small cyclopoids and nauplii, dominated the copepod communities in the 3 years; it accounted for more than 77% of the total number and for between 40 and 63% of the total biomass. Changes in density and biomass values among the three cruises differed according to copepod size fraction and water mass; the >300-μm fraction showed no changes among the 3 years, both in Antarctic (density and biomass) and in Subantarctic waters (density), whereas the <300-μm fraction showed higher (density and biomass) values in 2001 both in Subantarctic and in Antarctic waters. Sea surface temperature and its anomaly accounted for the largest proportion of variability in copepod density and biomass, particularly for the <300-μm fraction.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
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/11336/68848
Thompson, Gustavo Ariel; Dinofrio, Estela O.; Alder, Viviana Andrea; Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer; BioMed Central; Helgoland Marine Research; 66; 2; 6-2012; 127-138
1438-387X
1438-3888
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68848
identifier_str_mv Thompson, Gustavo Ariel; Dinofrio, Estela O.; Alder, Viviana Andrea; Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer; BioMed Central; Helgoland Marine Research; 66; 2; 6-2012; 127-138
1438-387X
1438-3888
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s10152-011-0253-4
info:eu-repo/semantics/altIdentifier/url/https://hmr.biomedcentral.com/articles/10.1007/s10152-011-0253-4
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv BioMed Central
publisher.none.fl_str_mv BioMed Central
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
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score 13.000565

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