摘要
2006年10月至2007年7月,调查了宁波市东钱湖(Ⅰ、Ⅱ站)、月湖(Ⅲ、Ⅳ站)和日湖(Ⅴ、Ⅵ站)三个游览性湖泊浮游轮虫的群落结构及其生物多样性。共发现浮游轮虫21种,以月湖轮虫的密度(3287 ind..L-1)和生物量(0.884 mg.L-1)为最高,日湖轮虫的Margalef多样性指数0.917为最高,东钱湖轮虫的群落指标均最低。东钱湖轮虫优势种为暗小异尾轮虫(Trichocerca pusilla);月湖和日湖轮虫第一优势种均为针簇多肢轮虫(Polyarthra trigla)。浮游轮虫生物多样性指数随着水体碱性环境的加剧而呈极显著地下降(r=-0.545,n=24,p<0.01),月湖和日湖的浮游轮虫生物多样性指数也随轮虫密度的增加而极显著地下降(r=-0.668,n=16,p<0.01)。
The community and biodiversities of Rotifera, including species composition, density, biomass, biodiversity index and regression analysis were studied at six sampling stations （ Ⅰ -Ⅵ） in the touring lakes, Ningbo. In one year study, 21 species of rotifers were found. The annual average density of rotifers was 1782 ind.L-1; biomass was 1.330 mg·L-1 and Margalef＇s biodiversity index was 0.740. Trichocerca pusilla and Polyarthra trigla were the dominant species in three touring lakes. Density and biodiversity index of rotifer in lake Dongqianhu were lower than those in the lakes Yuehu and Rihu. Regression analysis result showed that biodiversity index of rotifer had a negative linear relationship （r=-0.545, n = 24, p〈0.01 ） with water body pH value, and there was a significantly negative linear relationship （r=-0.668, n = 16, p〈0.01 ） between biodiversity index of rotifer and the community density in the lakes Yuehu and Rihu.
出处
《生态科学》
CSCD
2008年第2期85-89,共5页
Ecological Science
基金
浙江省新苗人才计划项目(2007G60G2210022)
作者简介
楼威（1987-），女，浙江丽水人，浙江万里学院生物与环境学院本科生。
通讯作者：
