El ecosistema de la plataforma patagónica austral, marzo-abril 2000. Composición, abundancia y distribución del zooplancton.

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dc.bibliographicCitation.endpage21
dc.bibliographicCitation.stpage5
dc.bibliographicCitation.titleRevista de Investigación y Desarrollo Pesqueroes
dc.bibliographicCitation.volume19
dc.contributor.authorSabatini, M.
dc.coverage.spatialArgentina
dc.coverage.spatialSanta Cruz
dc.coverage.spatialPatagonia
dc.date.accessioned2014-10-10T15:38:08Z
dc.date.available2014-10-10T15:38:08Z
dc.date.issued2008
dc.description.abstractThe abundance, distribution and structure of the zooplankton community in southern Patagonia (SW Atlantic Ocean) were studied during late summer (March-April 2000) from samples obtained with Nackthai (390 ~km) and Multinet (150 ~km) samplers. Total concentrations of zooplankton biomass, integrated in the water column, ranged between 1.0 and 14.5 g m-2 (dry weight) and reached the highest values in the mid and outer shelf off Bahía Grande (Santa Cruz Prov., Argentina) (51~'S). The < 5 mm size fraction, composed mainly of copepods represented, on average, 45% of the total; amphipods and euphausiids accounted for 20% and 31%, respectively. Amphipods were, almost exclusively, Themisto gaudichaudii and euphausiids most abundant species Euphausia lucens and Thysanoessa gregaria. Drepanopus forcipatus, Calanus australis and Oithona spp. constituted the dominant copepods with high abundance of the first in the whole area that represented, on average, 85% of the total mesozooplankton. The maximum abundances of Drepanopus forcipatus, recorded in outer waters of Bahía Grande, showed a noticeable decrease towards the inner area and to the north of the bay. C. australis and Oithona spp. concentrations, although much lower, distributed more homogeneously within the whole study area. The distribution of the different populations in the water column varied according to the species: D. forcipatus and Oithona spp. concentrated mainly in the upper layers down to ca. 50 m; C. australis was found between that depth and near the bottom. Copepods populations were dominated by late copepodids.
dc.description.statusPublisheden
dc.identifier.citationRevista de Investigación y Desarrollo Pesquero, 19. p. 5-21
dc.identifier.issn0325-6375
dc.identifier.urihttp://hdl.handle.net/inidep/285
dc.identifier.urihttp://hdl.handle.net/inidep/285
dc.identifier.urihttps://marabierto.inidep.edu.ar/handle/inidep/285
dc.language.isoes
dc.publisherMar del Plata : Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
dc.subject.asfaZooplanktonen
dc.subject.asfaBiomassen
dc.subject.asfaPopulation structureen
dc.subject.asfaGeographical distributionen
dc.subject.asfaContinental shelvesen
dc.subject.otherAmphipoda
dc.subject.otherCopepoda
dc.subject.otherEuphausiacea
dc.titleEl ecosistema de la plataforma patagónica austral, marzo-abril 2000. Composición, abundancia y distribución del zooplancton.
dc.title.alternativeThe austral Patagonian shelf ecosystem, March-April 2000. Zooplankton composition, abundance and distribution.
dc.typeJournal Contribution
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Revista de Investigación y Desarrollo Pesquero 2008 Nro 19