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dc.contributor.author
Sabatini, Marina Elena
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dc.contributor.author
Ramírez, F
dc.contributor.author
Martos, Patricia
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dc.date.available
2018-03-27T20:17:16Z
dc.date.issued
2000-12
dc.identifier.citation
Sabatini, Marina Elena; Ramírez, F; Martos, Patricia; Distribution pattern and population structure of Calanus australis Brodsky, 1959 over the southern Patagonian Shelf off Argentina in summer; Oxford University Press; ICES Journal of Marine Science; 57; 6; 12-2000; 1856-1866
dc.identifier.issn
1054-3139
dc.identifier.uri
http://hdl.handle.net/11336/40238
dc.description.abstract
In the southwest Atlantic Ocean, Calanus australis is widely distributed in waters of the inner and middle shelf off Argentina. Along the coast of southern Patagonia it is the most abundant large copepod through all seasons, typically occurring at higher densities over the inner shelf < 100 m deep. Its concentration decreases offshore as it is replaced by Calanus simillimus and Neocalanus tonsus. The abundance, vertical distribution, and population structure of Calanus australis off Patagonia were examined during a summer survey (March 1998) in order to study the ecological response of the copepod to hydrographic conditions. Differences in population densities were related to geographical difference in water-column stability. Higher numbers were recorded inshore at 51°S in strongly stratified coastal waters, where a well developed thermocline was present at 50 m. A sharp decline in abundance was evident southwards, coinciding with the occurrence of highly mixed, coastal, isothermal, and isohaline waters. Very low concentrations were also found at the most offshore, thermally stratified stations influenced by transitional waters between shelf and Malvinas waters. The population consisted mainly of stage 5 copepodites and fewer adult females. The scarcity or absence of younger stages cannot be attributed to the mesh size employed (150μm). The population dynamics of Calanus australis are discussed and compared with other Calanus species. © 2000 International Council For the Exploration of the Sea.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Argentine Sea
dc.subject
Calanoid Copepods
dc.subject
Calanus Australis
dc.subject
Population Dynamics
dc.subject.classification
Meteorología y Ciencias Atmosféricas
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Distribution pattern and population structure of Calanus australis Brodsky, 1959 over the southern Patagonian Shelf off Argentina in summer
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-16T14:30:22Z
dc.journal.volume
57
dc.journal.number
6
dc.journal.pagination
1856-1866
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Oxford
dc.description.fil
Fil: Sabatini, Marina Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Subsede Instituto Nacional de Investigación y Desarrollo Pesquero; Argentina
dc.description.fil
Fil: Ramírez, F. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
dc.description.fil
Fil: Martos, Patricia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Marinas; Argentina
dc.journal.title
ICES Journal of Marine Science
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1006/jmsc.2000.0969
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/icesjms/article/57/6/1856/768695
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