Global Plankton Database: inventory and data for cruise ML27

Mesozooplankton was sampled by open-closing JUDAY net with a 36 cm ring diameter and mesh size of 125 µm. Additionally, the JUDAY oceanic model JOM with 300 µm mesh size and 80 cm ring diameter was used. 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 taxonomic groups - to type, class, order and family levels.

中层浮游动物采用开闭式朱迪网（JUDAY net）采集，该网环直径36厘米，网目尺寸125微米。此外，还使用了朱迪海洋型号网（JUDAY oceanic model, JOM），其网目尺寸300微米，环直径80厘米。开闭机制采用南森机械锁系统（Nansen mechanical lock system），允许网具在标准深度层（0-10、10-25、25-50、50-100、100-200、200-300、300-500米）垂直拖曳，并在上层深度处关闭。拖曳深度通过放出的钢缆长度和钢缆倾斜角度评估。10-20毫升样品用3-4%缓冲甲醛固定，返回实验室后进行处理。所有桡足类（copepods）鉴定至属级，其他分类群鉴定至型、纲、目及科级。