Benthic imagery from nearshore drop camera surveys along Eastern Shore (Nova Scotia, Canada) to characterize shallow subtidal habitats

The Department of Fisheries and Oceans Canada (DFO) conducted nearshore drop camera surveys between 2019 and 2020 to characterize the distribution and abundance of seagrass, kelp, and other benthic macroalgae along the Eastern Shore of mainland Nova Scotia. Surveys were designed to address data gaps and support mapping work (species distribution modelling, remote sensing) to inform conservation and marine spatial planning in the Eastern Shore Islands Area of Interest and Goldboro area. Still images extracted from video transects were analyzed to evaluate the abundance (% cover) of eelgrass (<i>Zostera marina</i>), 8 species or genera of large brown macroalgae (<i>Saccharina latissima</i>, <i>Laminaria digitata</i>, <i>Agarum clathratum</i>, <i>Alaria esculenta</i>, <i>Saccorhiza dermatodea</i>, <i>Desmarestia</i> spp., <i>Fucus</i> spp., <i>Ascophyllum nodosum</i>), an invasive green alga (<i>Codium fragile</i> ssp. <i>fragile</i>), 5 functional groups of benthic macroalgae (filamentous turf algae, coarsely-branched turf algae, articulated coralline algae, encrusting algae, and foliose algae), detrital material, and 5 bare substrate cover categories (mud/sand, pebbles, cobbles, boulders, bedrock). In this Version 1, we report general geolocations and image labels describing the dominant cover component per image. Specific locations will be provided in a future update.

加拿大渔业与海洋部（Department of Fisheries and Oceans Canada, DFO）于2019至2020年间开展近岸投放式摄像调查，旨在刻画新斯科舍半岛东海岸海草、巨藻及其他底栖大型藻类（benthic macroalgae）的分布与丰度特征。本次调查旨在填补现有数据空白，为物种分布建模、遥感等制图相关工作提供支撑，以服务东海岸群岛关注区与戈德伯勒区域的海洋保护及海洋空间规划决策。研究人员对视频样带中提取的静态图像开展分析，评估了鳗草（Zostera marina）、8个物种类/属的大型褐藻（Saccharina latissima、Laminaria digitata、Agarum clathratum、Alaria esculenta、Saccorhiza dermatodea、Desmarestia spp.、Fucus spp.、Ascophyllum nodosum）、入侵性绿藻（Codium fragile ssp. fragile）、5类底栖大型藻类功能群（丝状丛生藻类、粗分枝丛生藻类、关节珊瑚藻类、结壳藻类以及叶状藻类）、碎屑物质以及5类裸露底质覆盖类型（泥/砂、砾石、圆石、巨砾、基岩）的丰度（以覆盖百分比计）。本数据集为第1版，仅公开总体地理坐标与描述单张图像优势覆盖组分的图像标签信息，具体点位将在后续更新中公布。