Seabird mortality on factory trawlers in the Falkland Islands and beyond
Seabird mortality on factory trawlers in the Falkland Islands and beyond
复制标题
福克兰群岛及其他地区工厂拖网渔船上的海鸟死亡率
DOI：
10.1016/j.biocon.2006.02.007
复制
发表时间：
2006
影响因子：
5.9
通讯作者：
L. Bugoni
中科院分区：
文献类型：
--
作者：
B. Sullivan;T. Reid;L. Bugoni
2002/2003年，在福克兰群岛作业的底鳍鱼拖网渔船上安置了专门负责的海鸟观察员，以调查船队造成的海鸟死亡率。观察员的任务是在157天的覆盖范围内记录海鸟在射击、拖网和拖运作业期间的相互作用。据估计，在此期间，大约有1500只海鸟，主要是黑眉信天翁（Thalassarche melanophris），被拖网渔船捕杀。在群岛北部的巴塔哥尼亚大陆架也记录了大量的死亡率。在船尾以工厂排放的水为食时，鸟儿被翘曲索拖到水下而被杀死。这些鸟的比例不详，它们滑下电缆，被电缆的接头刺穿，电缆平均位于距离水面90±40米的地方，随后被拖上船。世界上许多大型拖网船队排放工厂废物并吸引大型海鸟（如信天翁和大海燕），造成的死亡率需要立即调查。
Specifically tasked seabird observers were placed onboard demersal (bottom) finfish trawlers operating in the Falkland Islands in 2002/2003 to investigate the level of seabird mortality caused by the fleet. The observers were tasked to record seabird interactions during shooting, trawling and hauling operations during 157 days of coverage. It is estimated that >1500 seabirds, predominantly Black-browed albatross (Thalassarche melanophris), were killed by finfish trawlers during this period. Significant levels of mortality were also recorded on the Patagonian Shelf, north of the islands. Birds were killed after being dragged underwater by the warp cable while feeding on factory discharge at the stern of the vessel. An unknown proportion of these birds slide down the cable and become impaled on a splice in the cable, which was situated on average at 90±40m from the waters surface, and are subsequently hauled onboard. The incidence of mortality caused by the many large trawling fleets around the world that discharge factory waste and attract large bodied seabirds (e.g. albatross and large petrels) requires immediate investigation.