Spatio-temporal overlap between the at-sea distribution of Southern Giant Petrels and fisheries at the Patagonian Shelf
Spatio-temporal overlap between the at-sea distribution of Southern Giant Petrels and fisheries at the Patagonian Shelf
复制标题
南方巨海燕的海上分布与巴塔哥尼亚大陆架渔业之间的时空重叠
DOI：
10.1007/s00300-009-0620-7
复制
发表时间：
2009
期刊：
影响因子：
1.7
通讯作者：
F. Quintana
中科院分区：
文献类型：
--
作者：
Sofía Copello;F. Quintana
海鸟与渔业之间的相互作用对海鸟物种构成重大威胁，例如附带捕获。相反，有几种海鸟通过利用渔业抛弃物来满足其部分能量需求。了解原头鱼形目海洋分布与渔业之间的关系是海洋生态系统管理的一个关键工具。我们分析了16个卫星跟踪的南方巨型海燕繁殖成年人和渔业分布和渔获量在巴塔哥尼亚大陆架的区域之间的时空关系。我们还确定了成年人在不同海洋司法管辖区所花费的时间。结果表明，鸟类和渔业，主要是拖网渔船之间的显着的时空关联。南方巨海燕集中在阿根廷沃茨觅食。利用丰富和可预测的食物来源提供的渔业丢弃物可能是影响阿根廷巴塔哥尼亚的南方巨海燕种群动态的因素之一。
The interactions between seabirds and fisheries pose significant 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 fisheries discards. Knowledge about the relationship between at-sea distribution of Procellariiformes and fisheries 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 fisheries distribution and catch at the Patagonian Shelf. We also determined the time spent by adults in different marine jurisdictions. Results indicated a marked spatio-temporal association between birds and fisheries, mainly trawlers. The Southern Giant Petrels concentrated their foraging effort over Argentinean waters. The use of an abundant and predictable food source provided by the fisheries discards may be one of the factors affecting the dynamics of the Southern Giant Petrel populations in Patagonia, Argentina.