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dc.contributor.author
Giménez, Eloísa Mariana
dc.contributor.author
Winkler, Glescher
dc.contributor.author
Hoffmeyer, Monica Susana
dc.contributor.author
Ferreyra, Gustavo Adolfo
dc.date.available
2019-10-21T21:59:46Z
dc.date.issued
2018-12
dc.identifier.citation
Giménez, Eloísa Mariana; Winkler, Glescher; Hoffmeyer, Monica Susana; Ferreyra, Gustavo Adolfo; Composition, Spatial Distribution, and Trophic Structure of the Zooplankton Community in San Jorge Gulf, Southwestern Atlantic Ocean; Oceanography Society; Oceanography; 31; 4; 12-2018; 154-163
dc.identifier.issn
1042-8275
dc.identifier.uri
http://hdl.handle.net/11336/86781
dc.description.abstract
The goal of this study was to understand the zooplankton community composition and food web structure in San Jorge Gulf (45°–47°S, 65°30'W), a highly productive marine ecosystem in southern Argentina. A spatial grid of 14 stations was sampled in 2014. The sampled zooplankton community was composed of 30 taxa, with copepods accounting for 83% of the total abundance. Community composition was strongly related to surface temperature and water column stratification. Two distinct zooplankton assemblages were present. The zones designated North and Center were dominated by Ctenocalanus vanus; copepodite stages of C. vanus, Clausocalanus brevipes, and Paracalanus parvus; appendicularians; and Oithona helgolandica. The South zone was dominated by P. parvus, copepodites, Acartia tonsa, and Drepanopus forcipatus. The plankton food webs were increasingly enriched in carbon and nitrogen stable isotopes from the North to the South. Depleted δ 13 C signatures in the North may be explained by terrigenous inputs derived from strong westerly winds. The zooplankton taxa displayed a wide feeding range in the North, whereas the narrow trophic space of the South food web suggested similar feeding strategies among the taxa. Appendicularians were positioned at the base of the food webs, copepods were in the middle, and chaetognaths occupied high trophic positions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oceanography Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
Copepods
dc.subject
Assemblages
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Stable isotope analyses
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Pelagic food web
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Ecología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Composition, Spatial Distribution, and Trophic Structure of the Zooplankton Community in San Jorge Gulf, Southwestern Atlantic Ocean
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-17T14:07:14Z
dc.journal.volume
31
dc.journal.number
4
dc.journal.pagination
154-163
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Rockville
dc.description.fil
Fil: Giménez, Eloísa Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Institut des Sciences de la Mer de Rimouski; Canadá
dc.description.fil
Fil: Winkler, Glescher. Institut des Sciences de la Mer de Rimouski; Canadá. Université du Québec à Rimouski; Canadá
dc.description.fil
Fil: Hoffmeyer, Monica Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
dc.description.fil
Fil: Ferreyra, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Institut des Sciences de la Mer de Rimouski; Canadá. Université du Québec à Rimouski; Canadá
dc.journal.title
Oceanography
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.5670/oceanog.2018.418
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://tos.org/oceanography/article/composition-spatial-distribution-and-trophic-structure-of-the-zooplankton-c
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