Use of marine space by Black-browed albatrosses during the non-breeding season in the Southwest Atlantic Ocean

摘要: Abstract Marine birds like albatrosses have shown a profound deterioration of their conservation status in recent years. The Black-browed albatross ( Thalassarche melanophris ) is the most abundant threatened species Southwest Atlantic continental shelf. Declines breeding populations been largely attributed to impact incidental mortality fisheries. Data on at-sea distribution for during abundant, but movements individuals winter are poorly known. Here, we investigate non-breeding seasons 2011 and 2012. Eleven adult were captured equipped with satellite tags. Distribution tracked was mostly restricted waters within shelf Argentina, Uruguay southern Brazil; from 29° 51°S. Two large marine areas, comprising ca. 90% core area (50% utilization distribution) identified; one mouth Rio de la Plata toward E SE reaching shelfbreak, another El Rincon estuary South. Tracked distributed over nine oceanographic regimes SW shelf, spending between 5 34% time at sea fronts high productivity such as Plata, Los Patos lagoon front, shelfbreak mixed front. identified areas could be considered proxy indicators priority implementing measures species. analysis overlapping fisheries Argentinean Continental Shelf will provide further insights about critical where those should more stringent.