Global Plankton Database: inventory and data for cruise AK62@en

Mesozooplankton was sampled by open-closing JUDAY net with a 36 cm ring diameter and mesh size of 125 µm. The open-closing mechanism used was the Nansen mechanical lock system allowing nets to be vertically towed through standard depths (0-10, 10-25, 25-50, 50-100, 100-200, 200-300, 300-500 m) and closed at the upper depth level. Depth of tow was evaluated by wire paid out and the angle of wire inclination. The 10-20 ml samples were preserved in 3-4% buffered formaldehyde and processed on return to the laboratory. All of copepods were identified to genus level, other taxanomic groups - to type, class, order and family levels.本数据集采用环径36厘米、网目尺寸125微米的开闭式JUDAY网（open-closing JUDAY net）采集中型浮游动物（Mesozooplankton）。所用的开闭机构为南森机械锁定系统（Nansen mechanical lock system），可使网具沿垂直方向依次通过各标准水层（0~10米、10~25米、25~50米、50~100米、100~200米、200~300米、300~500米），并在各水层的上层边界处关闭。拖曳水深通过放出缆绳的长度及缆绳倾斜角进行测算。所获10~20毫升的样品经3%~4%的缓冲甲醛（buffered formaldehyde）固定后，带回实验室开展后续处理。所有桡足类（copepods）均鉴定至属级阶元，其余分类类群则分别鉴定至型、纲、目及科级阶元。