锦州湾夏季浮游动物的群落特征

调查结果表明:锦州湾生态监控区海域共鉴定出浮游动物36种,包括桡足类、水母类、毛颚类、磷虾、糠虾和各种浮游幼体以及一些原生动物。其中,小拟哲水蚤、强额拟哲水蚤、双毛纺锤水蚤为优势种,合计占浮游动物总个体数的56%。浮游动物的种类数和总个体数水平分布格局都表现为湾外大于湾内,浮游动物数量与叶绿素a的含量变化基本一致,但相关不显著。浮游动物多样性指数平均值为2.232,说明该海域水质和生物群落较稳定、成熟。

Community Characterstics of Zooplankton in Jinzhou Bay in Summer

The survey of the monitoring area was carried out in Jinzhou Bay from June to August in 2005.Thirty-six zooplankton species were identified,including copepod, medusa,chaetognotha,euphausiacea,mysidacea,planktonic shrimps and some protozoa.The dominant species in Jinzhou Bay are Paracalanus parvus,Paracalanus crassirostris,Acartia bifilosa,accounting for 56% of the total zooplankton biomass.The horizontal distributions of species numbers and total individuals of zooplankton in the investigated area showed a general increase from inside bay to the outside of the bay.The regression analysis indicates that the relationship between the zooplankton number and chlorophyll a level was not significant.The average diversity indices of zooplankton was 2.232,indicating that the water and biology community were steady.