Fish assemblages in nearshore habitats in Southeast Alaska

Fish populations within intertidal nearshore habitats including seagrass (Zostera marina) and understory kelp beds were assessed during summertime 2017, 2018, and 2019 (April-August) via beach seining methods. Data were collected on western Prince of Wales Island Alaska, at various sites depending on year. At each site, the coordinates, dates and times of the beach seines, fish species, and fish size were recorded. Fish were sampled once at each site. Invertebrates associated with the eelgrass bed were sometimes captured, as well, and are reported in this dataset. The purpose of these data was to characterize the fish assemblage within nearshore communities so that analysis of trophic interactions and community structure could be assessed along a gradient of sea otter occupation for an NSF-funded project: Apex Predators, Ecosystems, and Community Sustainability (APECS, http://apecs-ak.org/). Other datasets to support this work are also archived with KNB.

2017、2018及2019年夏季（4-8月），研究人员采用海滩围网法，对阿拉斯加州威尔士王子岛西部潮间带近岸生境（包含鳗草[Zostera marina]和下层海带床）内的鱼类种群开展了调查评估。数据采集于阿拉斯加州威尔士王子岛西部，各年份的调查站点存在差异。各站点均记录了海滩围网作业的坐标、日期与时间，以及鱼类物种和体长数据，且每个站点仅开展一次鱼类采样。部分附着于鳗草床的无脊椎动物也会被顺带捕获，相关记录亦收录于本数据集。本数据集旨在表征近岸群落的鱼类群落特征，以支持美国国家科学基金会（National Science Foundation, NSF）资助的“顶级捕食者、生态系统与群落可持续性”（APECS, http://apecs-ak.org/）项目——该项目将沿海獭栖息梯度开展营养级互作与群落结构相关分析。本项目的其他配套支撑数据集也已存档于KNB。