Oceanographic and biological landscapes used by the Southern Giant Petrel during the breeding season at the Patagonian Shelf

• Main Authors: Dogliotti, Ana Ines, Gagliardini, Domingo Antonio, Quintana, Flavio Roberto
• Language: unknown
• Published: 2011
• Subjects: biological production; breeding population; breeding season; habitat conservation; intersexual interaction; movement; radiotelemetry; satellite data; sea surface temperature; seabird; shallow water; shelf break; Atlantic Ocean; Patagonian Shelf; Animalia; Cephalopoda; Macronectes giganteus; Procellariidae; Argentina; Giganteus; Giant Petrel; Giant Petrels
• Online Access: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253162_v158_n6_p1247_Copello; https://hdl.handle.net/20.500.12110/paper_00253162_v158_n6_p1247_Copello

The study of how and why marine animals distribute themselves at sea has important conservation and management implications of the species and their habitats. We characterize the oceanographic and biological landscapes of the marine areas used by breeding Southern Giant Petrels (Macronectes giganteus) at Patagonian colonies and explore inter-sexual and inter-colony differences. The at-sea movements of 16 adults (7 males and 9 females) were studied by means of satellite telemetry techniques during 1999, 2000, 2002, and 2004 breeding seasons. Southern Giant Petrels utilized an oceanographic scenario characterized by high productivity, warm sea surface temperature, and shallow waters. The biological landscape was characterized by a high availability of squid and carrion nearby colonies. Females spent more time in the shelf break and exploited deeper waters than males. In contrast, males spent more time in coastal areas and they showed a higher spatial overlap with areas of high squid density than females. Such a prosperous foraging scenario for both sexes may play a key role in the growth of the breeding population of Southern Giant Petrel Patagonian colonies. © 2011 Springer-Verlag. Fil:Dogliotti, A.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gagliardini, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Quintana, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.