Spatio-temporal relationship between southern giant petrels and fisheries at the Patagonian Shelf.

COPELLO, S.; QUINTANA, F.

POLAR BIOLOGY

Año: 2009 vol. 32 p. 1211 - 1220

0722-4060

The interactions between seabirds and Wsheries pose signiWcant threats for the seabird species such as incidental capture. In contrast, several species of seabirds meet part of their energetic requirements through the use of Wsheries discards. Knowledge about the relationship between at-sea distribution of Procellariiformes and Wsheries is a key tool in marine ecosystem management. We analysed the spatio-temporal relationship between the areas used by 16 satellite-tracked breeding adults of the Southern Giant Petrel and Wsheries distribution and catch at the Patagonian Shelf. We also determined the time spent by adults in diVerent marine jurisdictions. Results indicated a marked spatio-temporal association between birds and Wsheries, mainly trawlers. The Southern Giant Petrels concentrated their foraging eVort over Argentinean waters. The use of an abundant and predictable food source provided by theWsheries pose signiWcant threats for the seabird species such as incidental capture. In contrast, several species of seabirds meet part of their energetic requirements through the use of Wsheries discards. Knowledge about the relationship between at-sea distribution of Procellariiformes and Wsheries is a key tool in marine ecosystem management. We analysed the spatio-temporal relationship between the areas used by 16 satellite-tracked breeding adults of the Southern Giant Petrel and Wsheries distribution and catch at the Patagonian Shelf. We also determined the time spent by adults in diVerent marine jurisdictions. Results indicated a marked spatio-temporal association between birds and Wsheries, mainly trawlers. The Southern Giant Petrels concentrated their foraging eVort over Argentinean waters. The use of an abundant and predictable food source provided by theWcant threats for the seabird species such as incidental capture. In contrast, several species of seabirds meet part of their energetic requirements through the use of Wsheries discards. Knowledge about the relationship between at-sea distribution of Procellariiformes and Wsheries is a key tool in marine ecosystem management. We analysed the spatio-temporal relationship between the areas used by 16 satellite-tracked breeding adults of the Southern Giant Petrel and Wsheries distribution and catch at the Patagonian Shelf. We also determined the time spent by adults in diVerent marine jurisdictions. Results indicated a marked spatio-temporal association between birds and Wsheries, mainly trawlers. The Southern Giant Petrels concentrated their foraging eVort over Argentinean waters. The use of an abundant and predictable food source provided by theWsheries discards. Knowledge about the relationship between at-sea distribution of Procellariiformes and Wsheries is a key tool in marine ecosystem management. We analysed the spatio-temporal relationship between the areas used by 16 satellite-tracked breeding adults of the Southern Giant Petrel and Wsheries distribution and catch at the Patagonian Shelf. We also determined the time spent by adults in diVerent marine jurisdictions. Results indicated a marked spatio-temporal association between birds and Wsheries, mainly trawlers. The Southern Giant Petrels concentrated their foraging eVort over Argentinean waters. The use of an abundant and predictable food source provided by theWsheries is a key tool in marine ecosystem management. We analysed the spatio-temporal relationship between the areas used by 16 satellite-tracked breeding adults of the Southern Giant Petrel and Wsheries distribution and catch at the Patagonian Shelf. We also determined the time spent by adults in diVerent marine jurisdictions. Results indicated a marked spatio-temporal association between birds and Wsheries, mainly trawlers. The Southern Giant Petrels concentrated their foraging eVort over Argentinean waters. The use of an abundant and predictable food source provided by theWsheries distribution and catch at the Patagonian Shelf. We also determined the time spent by adults in diVerent marine jurisdictions. Results indicated a marked spatio-temporal association between birds and Wsheries, mainly trawlers. The Southern Giant Petrels concentrated their foraging eVort over Argentinean waters. The use of an abundant and predictable food source provided by theVerent marine jurisdictions. Results indicated a marked spatio-temporal association between birds and Wsheries, mainly trawlers. The Southern Giant Petrels concentrated their foraging eVort over Argentinean waters. The use of an abundant and predictable food source provided by theWsheries, mainly trawlers. The Southern Giant Petrels concentrated their foraging eVort over Argentinean waters. The use of an abundant and predictable food source provided by theVort over Argentinean waters. The use of an abundant and predictable food source provided by the Wsheries discards may be one of the factors aVecting the dynamics of the Southern Giant Petrel populations in Patagonia, Argentina.sheries discards may be one of the factors aVecting the dynamics of the Southern Giant Petrel populations in Patagonia, Argentina.