Abstract:
We carried out an investigation of the zooplankton from Huanghua Harbour of Hebei province in summer of 2008. The samples were collected by medium plankton net. 24 species were found: 2 Protozoa, 11 Copepods, 2 Opossum shrimp, 1 Acetes, 1 gammarid, 2 Acanthomysis, 1 Chaetognaths, 1 tunicate, 2 larvae and 1 medusa. The average biomass of zooplankton is 320.6 mgm-3, ranging from 75.2 to 1 310.6 mgm-3. The diversity index of zooplankton in coastal waters is significantly higher than that in offshore; the dominant species are Sagitta crassa(0.33), Paracalanus parvus(0.31), Acartia pacifica(0.12), Calanus sinicus(0.38), Labidocera euchaeta(0.34) and Tortanus Spinicaudatus(0.04).