江苏泗洪洪泽湖湿地国家级自然保护区后生浮游动物群落结构及影响因子  

Characteristics and Influencing Factors of Metazoan Zooplankton Community Structure in Jiangsu Sihong Hongze Lake Wetland National Nature Reserve

作　　者：陈建琴 孙婉 钱薇雅 邢雨辉 张振华 张晨岭 汪俊琦 常青[2] 胡超超[2] Chen Jianqin;Sun Wan;Qian Weiya;Xing Yuhui;Zhang Zhenhua;Zhang Chenling;Wang Junqi;Chang Qing;Hu Chaochao(College of Life Science and Chemical Engineering,Jiangsu Second Normal University,Nanjing 211200,China;School of Life Sciences,Nanjing Normal University,Nanjing 210023 China;Nanjing Normal University Zhongbei College,Danyang 212334,China)

机构地区：[1]江苏第二师范学院生命科学与化学化工学院,江苏南京211200 [2]南京师范大学生命科学学院,江苏南京210023 [3]南京师范大学中北学院,江苏丹阳212334

出　　处：《南京师大学报（自然科学版）》2024年第3期72-80,共9页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(41271057).

摘　　要：浮游动物在水生态系统的物质循环、能量流动和信息传递过程中起着重要作用.为探究江苏泗洪洪泽湖湿地国家级自然保护区后生浮游动物现状,研究于2020年8月—2021年7月对保护区水域的后生浮游动物进行了4次调查.研究发现后生浮游动物62属112种,其中轮虫32属67种,枝角类17属31种,桡足类13属14种.后生浮游动物平均密度为1636.31 ind./L,季节变化对密度有极显著的影响,空间变化对其有显著影响.研究发现,洪泽湖保护区共有15种优势种,优势种生态位宽度指数为0.14~0.84,生态位重叠指数为0.22~0.95,生态位重叠程度总体较高.Permanova分析结果表明,pH、水温(WT)、总氮(TN)、透明度(SD)是影响保护区后生浮游动物群落结构的主要环境因子.使用物种多样性指数评价水质,结果显示保护区水体处于轻度-中度污染水平.本研究可为洪泽湖湿地国家级自然保护区生态环境监测、保护及管理等提供基础资料和科学依据.Zooplankton is the link between primary producers and other trophic levels.It plays an important role in material circulation,energy flow and information transmission of aquatic ecosystem.In order to explore the status and the dynamics of metazoan zooplankton community structure in Jiangsu Sihong Hongze Lake Wetland National Nature Reserve,4 surveys were conducted in the reserve from August 2020 to July 2021.The study analyzed the metazoan zooplankton community structure,niche characteristics of dominant species and water quality in the reserve.A total of 112 species of metazoan zooplankton belonging to 62 genera were identified,including 67 species of Rotifera belonging to 32 genera,31 species of Cladocera belonging to 17 genera,and 14 species of Copepoda belonging to 13 genera.The average density of metazoan zooplankton was 1636.31 ind./L,with significant seasonal and spatial differences.A total of 15 dominant species of metazoan zooplankton were identified in 4 seasons.The composition of dominant species showed seasonal replacement,in which the structure of dominant species in summer was complex and the structure of other seasons was simple.The niche breadth index of the dominant species ranged from 0.14 to 0.84.According to the niche width of each dominant species in different seasons,the dominant species of metazoan zooplankton in the reserve were divided into 3 groups,wide niche,middle niche and narrow niche,and most species are middle niche.The niche overlap index ranged from 0.22 to 0.95 and the niche overlap index of some species was more than 0.90.The niche overlap degree of dominant species in different seasons varied greatly,and the overall overlap degree was high.The changes of water environment played a leading role in the distribution of metazoan zooplankton community structure.Permanova analysis showed that pH,water temperature(WT),total nitrogen(TN)and secchi depth(SD)were the main environmental factors affecting the community structure of metazoan zooplankton in the reserve.In this study,the mai

关 键 词：后生浮游动物 群落结构 环境因子 江苏泗洪洪泽湖湿地国家级自然保护区 

分 类 号：X176[环境科学与工程—环境科学]