摘要
对东江干流浮游动物进行调查,并分析了其群落结构、生物量和丰度的空间分布特征及与主要环境因子的关系.46个采样点中共发现52种浮游动物,浮游动物的密度范围在1~3 640L-1之间,其中原生动物与轮虫类占总浮游动物密度的77%.优势种属为钟虫（Vorticella）、侠盗虫（Strobilidium）、团睥睨虫（Askenasia volvox）、砂壳虫（Difflugia）、针簇多肢轮虫（Polyarthra trigla）、颈沟基合溞（Bosminopsis deiteris）、广布中剑水蚤（Mesocyclops leuckarti）.根据浮游动物各项指标值显示,东江干流水质良好.相关分析结果表明：浮游动物密度以及属类数均与叶绿素a、CODMn、DO、电导率呈极显著的正相关关系（P〈0.01）;不同类浮游动物与水质因子相关性程度不同,原生动物与电导率呈极显著正相关,轮虫与CODMn及温度呈极显著正相关,枝角类和桡足类均与DO呈极显著正相关.浮游动物的空间分布与水体水质因子关系密切.
Community structure of zooplankton in Dongjiang river such as genus richness, density and biodiversities was investigated, regression analysis between community index of phytoplankon and water quality parameters were performed. Fifty two genus of zooplankton were identified. Density of phytoplankton was found to be from 1- 3 640 L-1, with 77% protozoa and rotifera. Vorticella sp. , Strobilidium sp. , Askenasia volvox, Difflugia sp. and Polyarthra trigla were found to be dominant in algae community. Judging from values of zooplankton comprehensive index, Dongjiang river was not seriously polluted. Density of zooplankton was found to be positively correlated with CODMn, conductivity value, DO and Chla （P〈0.01）. Water quality factor correlation degree was different with different zooplankton. Protozoa was positively correlated with conductivity, rotifer was positively correlated with CODMn and temperature, cladocera and copepoda was positively correlated with DO. Zooplankton was related closely to major water quality parameters.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第6期608-612,共5页
Journal of Beijing Normal University(Natural Science)
基金
国家水体污染控制与治理科技重大专项资助项目(2012ZX07501002)
国家自然科学基金资助项目(41271104)
关键词
东江
浮游动物
群落结构
Dongjiang river
zooplankton
community structure
