桥墩湖浮游植物调查以及鲢、鳙鱼产力的研究

2011年9月在湖北省对养殖水体桥墩湖的浮游藻类进行了调查,共鉴定出浮游藻类5门40属43种.浮游藻类的平均细胞数量为1.02×108个/L,平均生物量为14.56 mg/L.浮游动物29种,平均数量和生物量分别为13 189.62个/L、15.71 mg/L.其中中华小尖头藻(Raphidiopsis sinensia)、假鱼腥藻(Pseudanabaena sp.)和中华平裂藻(Merismopedia sinica)占到了总的浮游藻类细胞密度的80；.从生物量来说,优势种为硅藻门的尖针杆藻(Synedra acus),达到了总生物量的15.64；,以及浮游动物的轮虫为74.64；.

The Study on Plankton Composition and Fish Productivity of Qiaodun Lake,Hubei

In September 2011,an investigation of phytoplankton in the aquaculture Qiaodun lake was made.The identification result showed that there are 43 species,include varieties,belonging to 40 generas and 5 divisions.The average abundance and biomass of phytoplankton was 1.02×10ind/L and 3.32 mg/L respectively.Zooplankton had 29 species,the mean density was 13 189.62 ind/L and biomass was 15.71 mg/L.Raphidiopsis sinensia,Pseudanabaena sp.and Merismopedia sinica contributed over 80% of the total phytoplankton cell dengsity.But from the biamass the predominant species were the Synedra acus in Bacillariophyta and the rotifer in zooplankton,about 15.64% and 74.64% of total biomass,respectively.