Mesozooplancton abundance from surface to bathypelagic zone in during spring in the Northeast Atlantic Ocean in 2018 (Bathypelagic)@en

This dataset contains values mesozooplankton abundance groups collected during the Bathypelagic cruise from 24th of May to the 23rd of June 2018, from Northwest Africa (20° N, 20° W) to the South of Iceland. Mesozooplankton were sampled using the Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS-1 m²) zooplankton net with a 0.2 mm mesh size and with several nets for collecting samples from 8 different depth layers (0-100; 100-200; 200-400; 400-700; 700-1000; 1000-1300; 1300-1600; 1600-1900). Collected specimens MOCNESS-1 samples were preserved in 5% buffered formalin, and specimens were sorted out later. All individuals were counted with the exception of Protozoa due to the mesh size used was not suitable to retrieve a representative sample (Boltovskoy, 1981). Most abundant mesozooplankton groups were studied and identified until dominant groups. All data were standardized to number of individuals (#/m³) by layer.本数据集收录了2018年5月24日至6月23日半深海带科考航次（Bathypelagic cruise）采集的中型浮游动物（mesozooplankton）丰度类群实测数据，采样区域覆盖非洲西北部（20°N，20°W）至冰岛南部海域。中型浮游动物样品采用多网口启闭环境传感系统（Multiple Opening/Closing Net and Environmental Sensing System，简称MOCNESS-1 m²）浮游生物网采集，该网网孔孔径为0.2 mm，共设置8个不同深度分层（0-100 m、100-200 m、200-400 m、400-700 m、700-1000 m、1000-1300 m、1300-1600 m、1600-1900 m）以获取分层样品。采集得到的MOCNESS-1网样品中的标本经5%缓冲福尔马林溶液固定后，于后续开展分选操作。除原生动物（Protozoa）外，所有个体均完成计数——因本次使用的网孔尺寸无法获取具有代表性的原生动物采样样本（Boltovskoy, 1981）。本研究针对丰度最高的中型浮游动物类群开展分析，并将其鉴定至优势类群层级。所有数据均按深度层标准化为单位水体个体数（#/m³，个/立方米）。