浙江分水江水库大型底栖动物群落结构及水质评价  

Macrozoobenthos community structure and its indicative significance in water quality bio-assessment of Fenshuijiang Reservoir,Zhejiang Province of East China

作　　者：刘其根[1] 查玉婷[1] 陈立侨[2] 顾志敏 贾永义 胡忠军[1] 

机构地区：[1]上海海洋大学农业部水产种质资源与利用重点开放实验室,上海201306 [2]华东师范大学生命科学学院,上海200062 [3]江省淡水水产研究所,浙江湖州313001

出　　处：《应用生态学报》2012年第5期1377-1384,共8页Chinese Journal of Applied Ecology

基　　金：浙江省重大科技专项农业项目(2008C12009);上海高校选拔培养优秀青年教师科研专项基金项目(ssc05002);上海市重点学科建设项目(Y1101)资助

摘　　要：2008年11月—2009年10月,在浙江桐庐分水江水库设置7个站点对大型底栖动物进行逐月调查.结果表明:调查共采集到37种底栖动物,主要由寡毛纲和摇蚊科物种组成.春、夏、秋季优势种均为霍甫水丝蚓,冬季优势种为羽摇蚊.直接收集者在物种数量、密度和生物量上均占绝对优势.群落年均密度和年均生物量分别为(488.0±48.8)ind.m-2和(1.86±0.49)g.m-2.底栖动物密度在站点间无明显差异但存在显著的季节变化,呈现春季>夏季>冬季>秋季的趋势,生物量在站点、季节间均无显著差异.水温和水深是影响底栖动物时空分布的主要因子.Shannon多样性指数和Goodnight-Whitley指数不适合用于该水库的水质评价,其他指数综合显示分水江水库属于轻度污染.A monthly investigation was conducted on the macrozoobenthos at 7 stations of Fenshui- jiang Reservoir in Zhejiang Province of East China from November 2008 to October 2009. A total of 37 taxa were collected, most of which belonged to Oligocheata and Chironomidae. Limnodrilus hoffmeisteri was dominant in spring, summer and autumn, and Chironomus gr. plumosus was pre- vailing in winter. The collector-gatherer was the predominant group in species number, density and biomass. The mean annual density and biomass of the community were （488.0 ＋48.8 ） ind . m^2 and （1.86：t：0. 49） g ~ m-z, respectively. There were no significant differences in the macrozoo- benthic density among the stations and in the macrozoobenthic biomass among the stations and among the seasons, but the macrozoobenthic density had a significant seasonal variation, with the sequence of spring 〉 summer 〉 winter 〉 autumn. Water temperature and water depth were the main factors affecting the spatial distribution of the macrozoobenthos. Shannon index and Goodnight- Whitley index were not suitable for the assessment, whereas the Wright index, Carlander index, Pielou index and trophic level index showed that this reservoir was slihtlv pollntd

关 键 词：大型底栖动物 群落结构 生物量 摄食功能群 水质生物学评价 分水江水库 

分 类 号：X835[环境科学与工程—环境工程] X824