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首页> 外文期刊>Polar biology >Baited remote underwater video estimates of benthic fish and invertebrate diversity within the eastern Canadian Arctic
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Baited remote underwater video estimates of benthic fish and invertebrate diversity within the eastern Canadian Arctic

机译：诱饵的水下水下录像估计了加拿大东部北极地区底栖鱼类和无脊椎动物的多样性

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摘要

Enhanced survey efforts in the Arctic are currently needed to broaden our understanding of marine species distributions and establish the baseline data and methodologies necessary to detect potential responses to changing regional climate and human activities. For the first time, a baited remote underwater video (BRUV) survey was conducted in the Eastern Canadian Arctic, providing new biological information within data-poor regions of interest for marine conservation and potential fisheries development. A total of 31 camera deployments were conducted in 2015-2016 aboard an industry fishing vessel during summer exploratory fishing cruises, with observations occurring in the marine waters of the Qikiqtaaluk (Baffin) Region of Nunavut. In total, 18 invertebrate taxa and 14 fish taxa were observed at the baited camera, with significant differences in assemblages among sites associated with spatial variation in temperature and depth. The Greenland shark Somniosus microcephalus and polar cod Boreogadus saida were the dominant fish species observed, with the presence of brittle stars Ophiuroidea, amphipods and chaetognaths dominating invertebrate communities. Comparisons with concurrent fisheries catch data (whelk pots) demonstrated the baited camera's ability to comparably detect local fish taxa when deployed over uniform, fine-grain sediment substrates, while local invertebrate assemblages were often better captured by fisheries surveys. These results illustrate the potential of low-impact BRUV survey methods to efficiently provide baseline data on spatial patterns of diversity and their drivers to advance our understanding of marine ecosystems within understudied polar regions.
机译：当前需要加强北极地区的调查工作，以加深我们对海洋物种分布的了解，并建立必要的基准数据和方法，以发现对变化的区域气候和人类活动的潜在反应。首次在加拿大东部北极圈进行了诱饵远程水下录像（BRUV）调查，为海洋保护和潜在渔业发展提供了数据贫乏地区的新生物信息。 2015-2016年期间，在夏季探索性钓鱼巡游中，在一艘工业用渔船上共进行了31次摄像机部署，并在努纳武特的Qikiqtaal​​uk（巴芬）地区的海水中进行了观测。在带诱饵的照相机上总共观察到18个无脊椎动物类群和14个鱼类群，在与温度和深度的空间变化有关的站点之间，组合之间存在显着差异。格陵兰鲨鱼Somniosus microcephalus和极地鳕鱼Boreogadus saida是观察到的主要鱼类，在无脊椎动物群落中存在脆性星星蛇眼纲，两栖类和cha类。与同时进行的渔业捕捞数据（吊罐）的比较表明，使用诱饵的摄像机将其部署在均匀的细颗粒沉积物上时，能够比较地检测出当地的鱼类分类，而通过渔业调查通常可以更好地捕获当地的无脊椎动物。这些结果表明，低影响的BRUV调查方法有可能有效地提供有关多样性空间格局及其驱动力的基线数据，以增进我们对被研究的极地地区海洋生态系统的了解。

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