Distribución del plancton a mesoescala en un área de reproducción de la anchoíta en la plataforma bonaerense

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dc.bibliographicCitation.endpage91
dc.bibliographicCitation.stpage69
dc.bibliographicCitation.titleRevista de Investigación y Desarrollo Pesqueroes
dc.bibliographicCitation.volume5
dc.contributor.authorAkselman, Rut
dc.contributor.authorCarreto, J.I.
dc.contributor.authorRamirez, F.C.
dc.coverage.spatialArgentina
dc.coverage.spatialBuenos Aires
dc.date.accessioned2014-10-03T17:51:58Z
dc.date.available2014-10-03T17:51:58Z
dc.date.issued1986
dc.description.abstractIn order to determine the distribution patterns of phytoplanktonic and zooplanktonic species that constitute the main food of the argentine anchovy (Engraulis anchoita), a study was made within a coastal spawning area on meso-scaled space (approximately 7 miles between stations). It was observed the predominacne of the copepod Oithona helgolandica and copepodites stages of other small-sized species, thus inferring the preponderance of nauplii stages which constitute the main food of early anchovy larvae. A high spatial heterogeneity was found in the distrtibution of both phytoplanktonic and zooplanktonic communities. Phytoplankton showed a patchiness distribution both in horizontal and vertical directions. Diatoms, dinoflagellates and coccolithophoirids showed their own distribution patterns with biomass nuclei centered at different stations. The spatial distribution of the components within each taxonomic group seems to be of the contagious-type distribution. The positive correlation (r= 0,64*) as observed between immature stages of copepods and coccolithophorids seems to indicate a trophic direction of these consumers, which is also supported by the finding of coccolithophorids in copepods pellets. The phytoplankton crop as measured by population census and chlorophyll a concentrations (0,0-0,91 mg/m3) indicates an area of a low productive capacity.
dc.description.statusPublisheden
dc.identifier.citationRevista de Investigación y Desarrollo Pesquero, 5. p. 69-91
dc.identifier.issn0325-6375
dc.identifier.urihttps://marabierto.inidep.edu.ar/handle/inidep/228
dc.language.isoes
dc.publisherMar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
dc.subject.asfaPhytoplanktonen
dc.subject.asfaZooplanktonen
dc.subject.asfaTrophic relationshipsen
dc.subject.asfaPopulation densityen
dc.subject.asfaHorizontal distributionen
dc.subject.asfaSpecies diversityen
dc.subject.otherClupeiformes
dc.subject.otherEngraulidae
dc.subject.otherEngraulis anchoita
dc.subject.otherCopepoda
dc.subject.otherOithonidae
dc.subject.otherOithona helgolandica
dc.subject.otherzooplancton
dc.subject.otherrelaciones tróficas
dc.subject.otherfitoplancton
dc.subject.otherdistribución horizontal
dc.subject.otherdensidad poblacional
dc.subject.otherdiversidad de especies
dc.titleDistribución del plancton a mesoescala en un área de reproducción de la anchoíta en la plataforma bonaerense
dc.title.alternativePlankton mesoscale distribution in a spawning area of Engraulis anchoita in shelf waters off Buenos Aires Province
dc.typeJournal Contribution
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Revista de Investigación y Desarrollo Pesquero 1986 Nro 5