【摘要】 本文应用定量分析的方法对三江平原池塘的浮游动物进行了研究。实验期间,三江平原的池塘共有28种浮游动物。其中原生动物占42.9％,轮虫占25％,枝角类占21.4％,桡足类占10.7％。原生动物中,沙壳虫、焰毛虫为常见种;轮虫中针簇多肢轮虫和盘状鞍甲轮虫为常见种;枝角类中,裸腹蚤为常见种;桡足类中,镖水蚤为常见种类。浮游动物生物量的蜂值出现在7月5日,为6.34g/m~2;桡足类具有两个峰值,出现在7月19日和9月9日,分别为4.87g/m~2和1.81g/m~2;枝角类的呈现出规律性波动。轮虫和原生动物的峰值都出现在6月21日,分别为1.85g/m~2和0.72g/m~2。原生动物的生物量优势种变化较大;轮虫生物量优势种主要是针簇多肢轮虫和萼花臂尾轮虫;枝角类的生物量优势种为裸腹溞和溞;桡足类的主要是剑水溞和镖水溞。更多还原

【Abstract】 There are 28 species of zooplankton in the pond in Sanjiang Plain, among them, Protoza makes up 42.9%, Rotifera 25% Cladocera 21.4% and Copepoda 10.7%. The peak value of zooplankton biomass shows in July, 5 and is about 6.34g/m~2. There are two peak Values of Copepoda biomass appearing in July, 19 and September, 9 and the values are 4.8 g/m~2 and 1.81g/m~2. The biomass of Protoza and Rotifera, the peak values appear in June, 21, and these are 1.85g/m~2 and 0.72g/m~2. The dominant species of Protoza biomass change very much during experiment time. The dominant species of Rotifera biomass are Ploehoma trigla and Brachious calyciflrous, The dominant Species of Cladocera biomass mainly are Moina sp. and Daphnia sp. The dominant species of copepopa biomass are Cyclops sp. and Diaptomindae spp.更多还原