【摘要】 项目工程海域经鉴定共有浮游动物种类59种,其中节肢动物19种(占32.3%),原生动物18种(占30.5%),轮虫动物17种(占28.8%),软体动物3种(占5.1%),毛颚动物、腔肠动物各1种(占1.7%).浮游动物平均数量为3443个/m~3,变动范围为1121～7186个/m~3.本次调查浮游动物的优势种类为真刺唇角水蚤、幼螺、双壳类幼虫、火腿许水蚤、短尾类溞状幼虫等五种.本项目工程海域浮游动物生物种类较多,多样性指数均值为2.89,生物群落结构基本稳定.浮游动物的生物多样性均值分别为2.89,按照生物多样性指数判别水域环境质量标准(2<H’≤3为轻度污染),表明项目工程海域生态环境质量处于轻度污染状态.更多还原

【Abstract】 There are 59 species in the sea area of project zone,which was consisted of Athropoda(19 species,32.3%).Protozoa(18 species,30.5%), Rotifer(17 species,28.8%),MoIIusca(3 species,5.1%),Chaetognath(1 species,1.7%) and Coelenterate(1 species,1.7%).The average abundance of zooplankton was 3443 ind/m3,the mobility scale was 1121 -7186 ind/m.Inthis area,the dominant species were Labidocera euchaeta,Gastropoda Larva,Bivalvia larva,Schmackeria poplesia and Zoaea.The species richness was high in project zone,the community structure was steady,the average value of biodivesity index was 2.89,which indicated the environment of poject zone was slightly polluted.更多还原