水产学报2013，Vol.37Issue(6)：894-903,10.DOI:10.3724/SP.J.1231.2013.27834
鲢鳙占优势的千岛湖浮游动物群落结构特征及其与环境因子的相关性
Community structure of zooplankton and its relation to environmental factors in the silver-carp-and-bighead-carp-dominated Qiandao Lake
摘要
Abstract
From 2007 to 2008,a monthly investigation was conducted to study the zooplankton community structure and its relations with the major water environmental factors in Qiandao Lake.The horizontal,vertical and temporal distribution characteristics of zooplankton communities were also analyzed.A total of 115 species of zooplankton were identified,and they belonged to Protozoa (16 species),Rotifer (51 species),Cladocera (23 species) and Copepoda (25 species),respectively.Seasonally,the density of zooplankton peaked in spring(840.9 and 850.5/L in 2007 and 2008,respectively),and biomass displayed a biomodal distribution pattern with peak values of 1.89 and 1.63 mg/L in May and secondary maximum of 0.837 and 0.802 mg/L in August of 2007 and 2008.Horizontally,the density and biomass of zooplankton decreased from riverine to lacustrine region.Vertically,zooplankton occurred at every water layer with the biomass maximum at depths of 4 m in river region and transitional zone and at depths of 8 m in lake region.The dominant species had relatively higher biomass at depths of 4-12 m.Biomass of Protozoa and Copepod positively correlated with dissolved oxygen (DO),while biomass of Rotifer and Cladocera were positively related to total nitrogen (TN),nitrate nitrogen (NO3-N)and the biomass of phytoplankton.Canonical correspondence analysis(CCA) showed that DO,water temperature (T),TN,total phosphorus,and NO3-N were the main ecological factors that could be used to explain the distribution of zooplankton.Meanwhile,the biomass of Daphnia was positively correlated with biomass of phytoplankton from February to June,however,negatively correlated with T in the other months.关键词
浮游动物/垂直分布/鲢鳙/透明溞/环境因子Key words
zooplankton/vertical distribution/silver carp and bighead carp/Daphnia hyalina/environment factor分类
生物科学引用本文复制引用
杨丽丽,何光喜,胡忠军,史文,刘其根,陈来生,王金鹏,杨卫明..鲢鳙占优势的千岛湖浮游动物群落结构特征及其与环境因子的相关性[J].水产学报,2013,37(6):894-903,10.基金项目
国家自然科学基金项目(31072218) （31072218）
