Bradley Harris和Carwyn Hammond测试减少拖网副渔获物的策略,栖息地影响

Brad-Harris-and-Carwyn-Hammond-AFS-members

AFS成员Bradley Harris和Carwyn Hammond

大部分保护工作都是根据《马格努森-史蒂文斯法案》(Magnuson-Stevens Act)进行的,该法案除其他事项外,还确立了基本的鱼类栖息地,并规定捕捞保持可持续。阿拉斯加太平洋大学教授、渔业水产科学技术实验室主任布拉德·哈里斯说:“它还说,捕捞行为不会破坏鱼类所需的栖息地的核心组成部分。”BOB国际体育bob娱官网入口“这种感觉是,也许你没有过度捕捞,但你捕捞的方式实际上可能会损害系统的生产力。因此,这需要有一个适当的过程,最大限度地减少这些不利影响。”哈里斯说,实际上只有三种方法可以最大限度地减少这些不良影响。“你可以停止捕鱼或少捕鱼;你可以在其他地方捕鱼——你可以关闭一个区域;或者你可以改变你钓鱼的方式,”哈里斯说。尤其是在阿拉斯加,前两种选择都不可行。因此,科学家们正专注于第三种选择——改变捕鱼方式。 Ideally, the pollock trawl fleet fishes pelagically – meaning in the water column above the sea floor, but, according to Carwyn Hammond, who is with the conservation engineering group at the Alaska Fisheries Science Center, sometimes that’s not where the fish are. “There are times where, you know, you’ve got these beautiful schools of pollock that are in the water column and you can fish pelagically, but then there’s times those pollock aggregate on or near the sea floor and they do have to have a certain amount of contact in order to catch those fish,” Hammond said. But, the more contact the net has with the sea floor, the more…点击阅读更多。