摘要
调查了大型深水湖泊———千岛湖枝角类的多样性 ,包括种类组成、密度、生物量以及优势度和相似性指数等。一年中 ,共发现 2 6种枝角类 ,根据年平均密度 ,优势种为透明 (Daphniahyalina)、长额象鼻 (Bosminalongirostris)和短尾秀体 (Diaphanosomabrachyurum)。相关回归分析表明 ,3种多样性指数均随群落种类数的增加而显著升高 ,随群落优势度和相似性指数的增大而显著下降。
Diversities of planktonic Cladocera, including species composition, density, biomass, dominance and similarity indexes, was studied in lake Qiandao (Zhejiang). During one year study, 26 species were found. In terms of annual average density, the dominant Cladocera were Daphnia hyalina, Bosmina longirostris and Diaphanosoma brachyurum. Analysis of regression indicated that the high diversity index, the more species,and the low diversity index, the high index of dominance and similarity.
出处
《动物学杂志》
CAS
CSCD
北大核心
2002年第3期41-44,共4页
Chinese Journal of Zoology
基金
杭州市环境保护局课题 :千岛湖浮游生物群落动态分析及控制对策研究 (19990 1)
