浅水草型湖泊──扁担塘中桡足类的群落结构（英文）  

COMMUNITY STRUCTURE OF PLANKTONIC COPEPODA IN A SHALLOW, MACROPHYTIC LAKE, LAKE BIANDANTANG

作　　者：谢平[1] 高村典子[2] 

机构地区：[1]中国科学院水生生物研究所,武汉430072 [2]日本国立环境研究所

出　　处：《水生生物学报》1998年第2期135-142,共8页Acta Hydrobiologica Sinica

摘　　要：本文研究了一浅水草型湖泊──扁担塘中桡足类的群落结构，包括种类组成、种群动态及现存量。在一周年的研究中，共发现14种浮游桡足类（9种剑水蚤和5种哲水蚤）。根据年平均密度，剑水蚤的优势种为：Mesocyclops notius，Cyclops vincinuis vincinus和Thermocyclops brevifurcatus，而哲水蚤的优势种为Meodiaptomus yantsekiangensis和Sinocalanus dorrii。通过比较长江沿岸的5个湖泊的桡足类的种类组成发现，桡足类的种类数并不与湖泊面积大小成正比，这与Dodson通过研究欧洲及北美湖泊中的枝角类得出的结论并不一致。此外，虽然这5个湖泊中的桡足类的种类数多达35种，但每个湖泊中的优势种都非常相似地集中到少数几个属或种，而其它均为偶尔性种类。Community structure of copepods, including species composition, population dyamics and standing crops, was studied in a shallow, macrophytic lake, Lake Biandantang (Hubei, China). During one year study, 14 species (9 Cyclopoida and 5 Calanoida) were found. In terms of annual average density, the dominant Cyclopoida were Mesocyclops nortius, Cyclops vincinus vincinus and Thermocyclops Thermocyclops brevifurcatus, and meanwhile Neodiaptomus yantsekiangensis and Sinocalanus dorrii dominated the Calanoida.A comparison of species composition of Copepoda in five macrophytic lakes along the Chanajiang River shows that the species number of Copepoda is not proportional to the surface area of the lake, which is not Coincident with Didson’s conclusion on the positive relationship of lake surface area yis-a-vis cladocera species number in European.and North American Lakes. It was also found that although there were as many as 35 species of planktonic Copepda in these lakes, the dominants were quite similarly limited to a few genus or a few species, while the most other species only appeared incidentally.

关 键 词：桡足类 亚热带湖泊 物种丰度 沉水植物 生态学研究 

分 类 号：Q178.14[生物学—水生生物学]