摘要
2006年1月~2009年12月对滴水湖浮游动物中的轮虫、枝角类、桡足类的群落结构,包括种类组成、种群动态、现存量进行了4年的系统调查.至2009年滴水湖浮游动物共有49种,其中轮虫15属38种、枝角类3属3种、桡足类5属8种.浮游动物种类数和多样性逐年增加.浮游动物多样性指数H′和浮游动物种数与盐度显著负相关,与化学需氧量COD显著正相关.4年间滴水湖浮游动物优势种变化较大.根据浮游动物优势种组成特征判断,滴水湖已趋于淡水湖,而且水质状况为中营养水平.
The dynamics of zooplankton contain rotifera,cladocera and copepoda community structure including species composition,population dynamics,and standing crop were investigated in Dishui Lake from January 2006 to December 2009.Forty nine species of zooplankton were found,of which 38 species belong to 15 genera of Rotifera,3 species belong to 3 genera of Cladocera and 8 species belong to 5 genera of Copepoda.The number of zooplankton species and the multiplicity increased year by year.The diversity index H′ of zookplanton community and the number of zooplankton species had a significant negative correlation with salinity,but they had a significant positive correlation with chemical oxygen demand-COD.The zooplankton dominant species varied clearly in Dishui Lake during the last four years.Based on zooplankton dominant species composition,it indicated that Dishui Lake has already approached a fresh water lake,and it was in Medium eutrophication status.
出处
《上海师范大学学报（自然科学版）》
2011年第3期295-300,共6页
Journal of Shanghai Normal University(Natural Sciences)
基金
上海师范大学校基金(SK200908)
关键词
滴水湖
浮游动物
群落结构
多样性指数
DiShui Lake
zooplankton
community structure
diversity index
