Ecosystem responses to sportfish stocking and aeration in boreal foothills lakes

在整个北美西部，自然缺乏运动鱼和非本地鲑鱼的内陆水域的放养是一项成熟的管理活动，创造了新的休闲渔业。艾伯塔省可持续资源开发协会(ASRD)和艾伯塔省保护协会(ACA)目前在全省各地储存湖泊，包括小型北方山麓湖泊。然而，在淡水生态系统中增加顶级捕食者可能会对潜在的鲑鱼竞争对手以及作为鲑鱼猎物的水生无脊椎动物和两栖动物产生重大的生态影响。这些直接影响可以反过来影响食物链的其他组成部分。然而，与之前大多数研究的环境不同，我们研究的北方山麓湖泊更具生产力，包含无脊椎动物和耐寒饲料鱼的本地种群。这个

Throughout western North America, the stocking of inland waters that naturally lack sportfishes with non-native trout is a well-established management activity that creates new recreational fisheries. Alberta Sustainable Resource Development (ASRD) and the Alberta Conservation Association (ACA) currently stock lakes throughout the province, including small Boreal Foothills lakes. However, adding a top-predator into a fresh water ecosystem can have significant ecological impacts on potential trout competitors, and for aquatic invertebrates and amphibians that are the prey of the trout. These direct impacts can, in turn, affect other components of the food web. Unlike settings of most previous studies, however, the Boreal Foothills lakes of our study are more productive, and contain native populations of invertebrates and hardy forage fishes. The