武汉东湖桡足类的生态学演变  

ECOLOGICAL CHANGES OF COPEPODS IN LAKE DONGHU,WUHAN

作　　者：杨宇峰[1] 陈雪梅[1] 黄祥飞[1] 

机构地区：[1]中国科学院水生生物研究所,中国科学院南海海洋研究所

出　　处：《水生生物学报》1994年第4期334-340,共7页Acta Hydrobiologica Sinica

摘　　要：根据１９６２－１９６３，１９７４－１９７５，１９７９－１９９１年在武汉东湖进行的调查资料，考察了过去三十年内在东湖两个代表性采样站桡足类的种类组成及现存量的变化。结果表明：桡足类种类数由６０年代的１４种减少为９０年代的７种，Ｉ、Ⅱ站在种类组成的差别趋于消失。统计结果表明，东湖桡足类现存量以８０年代初、中期较高。但在水平分布格局上却发生了根本变化，由１９８７年前的Ｉ站现存量高于Ⅱ站，至１９８７年后Ⅱ站高于Ｉ站。本文还就影响东湖桡足类演变的生态因子进行了讨论。From thedata of copepod surveys made in 1962-1963,1974-1975 and 1979-1991 atStationsIand Ⅱ in Lake Donghu,Wuhan,the authors analyse the changes in species compo-sition, standing crop of copepods.The number of copepod species decreased from 14 speciesin 1960’s to 7 in 1990’s,but the species composition became similar between the twostations. The standing crop of copepods was largely higher in the early and middle1980’s.Before 1987,the standing crop was higher at Station I than that at Station Ⅱ,whilstthe reverse results were observed afterwards.Obvious changes also occurred in the horizon-tal distributions ofcopepods.Ecological factors influencing such changes are then discussed.

关 键 词：桡足类 生态学 演变 

分 类 号：Q959.308[生物学—动物学]