In March,the dominant species were Cyclops vicinus vicinus and Daphina pulex. The density of crustacean zooplankton in three stations was 17.1,7.0 and 1.8 ind.

• 3月份的优势种类为近邻剑水蚤和蚤状氵蚤；3个采样点(蚌埠朝阳大桥、五河分洪闸、浍河节制闸)的浮游甲壳动物密度分别为17.；1ind