大坳水库后生浮游动物多样性特征及其与环境因子的关系  

Diversity of Metazoan Zooplankton and Its Relationship with Water Environmental Factors in Da’ao Reservoir

作　　者：刘昔 雷明军 黄小龙 王梦雪 雷琦 LIU Xi;LEI Ming-jun;HUANG Xiao-long;WANG Meng-xue;LEI Qi(Ecological Environment Monitoring and Scientific Research Center,Yangtze River Basin Ecological Environment Supervision and Administration Bureau,Ministry of Ecological Environment,Wuhan 430010,China;College of Fisheries and Life Science,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]生态环境部长江流域生态环境监督管理局生态环境监测与科学研究中心,武汉430010 [2]上海海洋大学水产与生命学院,上海201306

出　　处：《长江科学院院报》2024年第9期53-59,共7页Journal of Changjiang River Scientific Research Institute

基　　金：国家自然科学基金长江水科学研究联合基金项目(U2240213);国家重点研发计划重点专项(2022YFC3203500,2021YFC3200100)。

摘　　要：为研究大坳水库后生浮游动物群落结构特征,提供水生态健康评价基础数据,于2021年8月(丰水期)和11月(枯水期)开展了2次水生态相关调查。结果表明:①大坳水库后生浮游动物共鉴定出3类26种,其中轮虫13种、枝角类4种、桡足类9种,优势种为螺形龟甲轮虫(Keratella cochlearis)、针簇多肢轮虫(Polyarthra trigla)、田奈同尾轮虫(Diurella dixonnuttalli)、暗小异尾轮虫(Trichocerca pusilla)、泡轮虫属一种(Pompholyx sp.)、圆筒异尾轮虫(Trichocerca cylindrica)和象鼻溞属一种(Bosmina sp.);②大坳水库丰水期(8月份)后生浮游动物的密度和生物量均大于枯水期(11月份);③大坳水库后生浮游动物Shannon-Wiener指数在丰水期和枯水期平均值分别为0.88和1.05,PCoA分析结果表明丰水期后生浮游动物群落结构存在空间分布差异;④RDA冗余分析结果表明大坳水库丰水期和枯水期物种-环境累计变异总解释率分别为62.4%和65.1%,高锰酸盐指数是影响大坳水库后生浮游动物群落结构变化的主要驱动因子。To elucidate the community structure characteristics of metazoan zooplankton in Da’ao Reservoir and provide foundational data for assessing aquatic ecological health,we conducted two ecological surveys in August(wet season)and November(dry season)of 2021.The results are as follows:(1)We identified 26 species of metazoan zooplankton in Da’ao Reservoir,including 13 species of rotifers,4 species of cladocerans,and 9 species of copepods.Dominant species included Keratella cochlearis,Polyarthra trigla,Diurella dixonnuttalli,Trichocerca pusilla,Pompholyxophrys trichocerca,Cylindrical Trichocerca,and Bosmina sp.(2)The density and biomass of metazoan zooplankton were higher during wet season(August)compared to dry season(November).(3)The average Shannon-Wiener index for metazoan zooplankton was 0.88 in wet season and 1.05 in dry season.Principal Coordinates Analysis(PCoA)revealed spatial distribution differences in the community structure during wet season;(4)Redundancy Analysis(RDA)indicated that the cumulative variation in species-environment relationships explained 62.4%and 65.1%of the total variation in wet and dry seasons,respectively.The permanganate index emerged as the primary driving factor influencing changes in the community structure of metazoan zooplankton in Da’ao Reservoir.

关 键 词：大坳水库 后生浮游动物 多样性 环境因子 

分 类 号：P951[天文地球—自然地理学] X835[环境科学与工程—环境工程]