水生态学杂志2016，Vol.37Issue(1)：62-69,8.DOI:10.15928/j.1674-3075.2016.01.009
浙江老虎潭水库后生浮游动物群落组成及其环境影响因子
Metazooplankton Community and Its Relationship with Environmental Factors in Laohutan Reservoir, Zhejiang, China
摘要
Abstract
Laohutan Reservoir, located in Daixi Town, Huzhou City of Zhejiang Province, is a large artificial deep-water reservoir constructed for flood control in 2005.Now it is also an important source of water for Huzhou City, downstream rural domestic water and irrigation for villages and towns, and also serves important social and ecologi-cal functions.Since the impoundment of Laohutan Reservoir, large numbers of silver carp and bighead carp have been released into the water,altering the phytoplankton community structure and increasing the intensity of filter-feeding on zooplankton.To date, no research has been reported on the zooplankton in Laohutan Reservoir.In order to explore the status of the metazooplankton community and its response to ecological changes in Laohutan Reser-voir, the metazooplankton community and water quality parameters of Laohutan Reservoir were investigated from May 2014 to February 2015.The study provides basic data for the evaluation of ecosystem health in Laohutan Res-ervoir and supplies information for more effectively stocking silver carp and bighead carp in Laohutan Reservoir. Seasonal investigations of metazooplankton were carried out in May, August, and November( spring, summer, au-tumn) of 2014 and February (winter) of 2015 at six sampling stations.Nine water quality variables were also meas-ured:T, pH, Chl-a, DO, SD, CODMn , BOD5 , TN and TP.A total of 34 metazooplankton species (22 Rotifera species, 6 Cladocera species and 6 Copepoda species) were identified.The dominant species were Polyarthra doli-choptera, Brachionus diversicornis, B calyciflorus, B angularis, Trichocerca cylindrica, T rousseleti, Synchaeta ob-longa and Bomina longirostris. The average annual values for metazooplankton density and biomass were 27.79 ind/L and 0.23 mg/L, respectively.The dominant species, average density and biomass of metazooplankton community displayed obvious variation with season.The species richness index and Shannon-Wiener index also showed obvious seasonal variations, with the highest values both in summer.The comprehensive trophic level index TLI(∑) of Laohutan Reservoir ranged from 39.63-46.69, indicating mesotrophic conditions year-round.Redun-dancy analysis ( RDA) shows that SD, DO, WT, CODMn and pH all affect the dynamics of phytoplankton communi-ty structure in the reservoir.关键词
老虎潭水库/后生浮游动物/群落结构/生物多样性Key words
Laohutan Reservoir/metazooplankton/community structure/biodiversity分类
生物科学引用本文复制引用
张爱菊,丁新新,刘金殿,杨元杰,郝雅宾,辛建美..浙江老虎潭水库后生浮游动物群落组成及其环境影响因子[J].水生态学杂志,2016,37(1):62-69,8.基金项目
湖州市科学技术局公益性技术应用研究（重点）（2014GZ03）；湖州市科学技术局自然科学资金项目（2014YZ06）。 （）
