Artículo

Campagna, C.; Piola, A.R.; Rosa Marin, M.; Lewis, M.; Fernández, T. "Southern elephant seal trajectories, fronts and eddies in the Brazil/Malvinas Confluence" (2006) Deep-Sea Research Part I: Oceanographic Research Papers. 53(12):1907-1924
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Abstract:

This study describes the association between transient, mesoscale hydrographic features along the axis of the Brazil-Malvinas Confluence, in the SW Atlantic, and the foraging behavior of 2-3-year-old (focal) juvenile southern elephant seals, Mirounga leonina, from Península Valdés, Argentina. Departing from the dominant pattern of foraging on predictable bathymetric fronts on the Patagonian shelf and slope, three females out of 12 satellite-tracked juveniles remained at the edge of young warm-core eddies and near the outer core of cold-core eddies, coinciding with the most productive areas of these temperature fronts. Seal trajectories along high-temperature gradients were always consistent with the speed and direction of surface currents inferred from the temperature distribution and confirmed by surface drifters. Movements of foraging seals were compared with those of surface drifters, coinciding in time and space and yielding independent and consistent data on regional water circulation parameters. The diving pattern recorded for one focal seal yielded shallower dives and a loose diel pattern in the eddy, and a marked diurnal cycle compatible with foraging on vertically migrating prey in the cold waters of the Malvinas Current. Pre-reproductive females that use the mesoscale fronts of the Argentine Basin as an alternative foraging area would benefit from lower competition with more experienced seals and with other top predators that reproduce along the coast of Patagonia. © 2006 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Southern elephant seal trajectories, fronts and eddies in the Brazil/Malvinas Confluence
Autor:Campagna, C.; Piola, A.R.; Rosa Marin, M.; Lewis, M.; Fernández, T.
Filiación:Centro Nacional Patagónico, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), 9120 Puerto Madryn, Chubut, Argentina
Wildlife Conservation Society, 2300 Southern Blvd, Bronx, NY 10460, United States
Departamento Oceanografía, Servicio de Hidrografía Naval, Av. Montes de Oca 2124, 1271 Buenos Aires, Argentina
Departamento de Ciencias de la Atmósfera y los Océanos, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:Eddies (oceanic); Foraging behavior; Mirounga leonina; Oceanic fronts; Telemetry; Temporal distribution; Bathymetry; Coastal zones; Eddy currents; Ocean currents; Seals; Telemetering; Eddies (oceanic); Foraging behavior; Mirounga leonina; Temporal distribution; Seawater; biotelemetry; current direction; diurnal variation; diving behavior; eddy; foraging behavior; hydrography; juvenile; movement; oceanic front; pinniped; temperature gradient; trajectory; Argentina; Argentine Basin; Atlantic islands; Atlantic Ocean; Chubut; Falkland Islands (Malvinas); Patagonian Shelf; South America; Valdes Peninsula; Mirounga leonina
Año:2006
Volumen:53
Número:12
Página de inicio:1907
Página de fin:1924
DOI: http://dx.doi.org/10.1016/j.dsr.2006.08.015
Título revista:Deep-Sea Research Part I: Oceanographic Research Papers
Título revista abreviado:Deep-Sea Res. Part I Oceanogr. Res. Pap.
ISSN:09670637
CODEN:DRORE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09670637_v53_n12_p1907_Campagna

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Citas:

---------- APA ----------
Campagna, C., Piola, A.R., Rosa Marin, M., Lewis, M. & Fernández, T. (2006) . Southern elephant seal trajectories, fronts and eddies in the Brazil/Malvinas Confluence. Deep-Sea Research Part I: Oceanographic Research Papers, 53(12), 1907-1924.
http://dx.doi.org/10.1016/j.dsr.2006.08.015
---------- CHICAGO ----------
Campagna, C., Piola, A.R., Rosa Marin, M., Lewis, M., Fernández, T. "Southern elephant seal trajectories, fronts and eddies in the Brazil/Malvinas Confluence" . Deep-Sea Research Part I: Oceanographic Research Papers 53, no. 12 (2006) : 1907-1924.
http://dx.doi.org/10.1016/j.dsr.2006.08.015
---------- MLA ----------
Campagna, C., Piola, A.R., Rosa Marin, M., Lewis, M., Fernández, T. "Southern elephant seal trajectories, fronts and eddies in the Brazil/Malvinas Confluence" . Deep-Sea Research Part I: Oceanographic Research Papers, vol. 53, no. 12, 2006, pp. 1907-1924.
http://dx.doi.org/10.1016/j.dsr.2006.08.015
---------- VANCOUVER ----------
Campagna, C., Piola, A.R., Rosa Marin, M., Lewis, M., Fernández, T. Southern elephant seal trajectories, fronts and eddies in the Brazil/Malvinas Confluence. Deep-Sea Res. Part I Oceanogr. Res. Pap. 2006;53(12):1907-1924.
http://dx.doi.org/10.1016/j.dsr.2006.08.015