Mesozooplankton biomass, size fraction 0.5-1 mm

The reporting of plankton tow events was inconsistent, event numbers may reference a single tow or a series of tows. Use caution in a merging of data from different sources.浮游生物拖网采样事件的记录方式并不统一，事件编号既可指代单次拖网采样，也可指代一组连续的拖网采样操作。因此在合并不同来源的数据时，请务必谨慎处理。