info:eu-repo/semantics/article
Population status and trends of Southern Giant Petrels (Macronectes giganteus) breeding in North Patagonia, Argentina
Registro en:
Quintana, Flavio Roberto; Punta, Gabriel; Copello, Sofía; Yorio, Pablo Martin; Population status and trends of Southern Giant Petrels (Macronectes giganteus) breeding in North Patagonia, Argentina; Springer; Polar Biology; 30; 1; 6-2006; 53-59
0722-4060
CONICET Digital
CONICET
Autor
Quintana, Flavio Roberto
Punta, Gabriel
Copello, Sofía
Yorio, Pablo Martin
Resumen
The actual breeding population of the Southern Giant Petrel from the northern Patagonian colonies of Argentina on Isla Arce and Isla Gran Robredo was estimated to be 2,300 pairs. The available data sets are small, but showed a positive linear trend at Isla Gran Robredo over the last 14 years, but no trend was detected by a linear model at Isla Arce over a 17-year-period. Our study suggests higher population numbers in recent years. The close presence of increasing penguin, elephant seal and sea lion colonies, the low capture rates by longliners at the Patagonian shelf and/or the extensive use of waste from an increasing fleet of trawlers and jiggers as extra food supply might be some of the reasons for such a population increase. Fil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina Fil: Punta, Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina Fil: Copello, Sofía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina Fil: Yorio, Pablo Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina