夏季率水浮游动物群落类型及影响因素  

Types of zooplankton community and influencing factors in summer in Shuaishui River

作　　者：毕孟飞[1] 虞洋 陈佳琪 赵坤[2] 涂俊 BI Mengfei;YU Yang;CHEN Jiaqi;ZHAO Kun;TU Jun(Environmental Monitoring Station of Huangshan,Huangshan 245099,Anhui,China;College of Life Sciences,Shanghai Normal University,Shanghai 200234,China;Department of Environmental Science and Engineering,Fudan University,Shanghai 200433,China;Shanghai Fudan Planning and Architecture Design Institution Co.,Ltd.,Shanghai 200433,China)

机构地区：[1]黄山市环境监测站,安徽黄山245099 [2]上海师范大学生命科学学院,上海200234 [3]复旦大学环境科学与工程系,上海200433 [4]上海复旦规划建筑设计研究院有限公司,上海200433

出　　处：《上海师范大学学报（自然科学版）》2019年第5期511-520,共10页Journal of Shanghai Normal University(Natural Sciences)

基　　金：黄山市2017年度科技计划项目

摘　　要：于2018年8月在率水设置了19个采样点,进行后生浮游动物标本采集和水质指标测定.共记录浮游动物22种,隶属2门19属,其中轮虫17属20种,桡足类2属2种,枝角类未检出.浮游动物丰度很低,在7~1675 L^-1之间变动,平均丰度仅123 L^-1.其中,轮虫是对率水浮游动物群落物种组成和生物量贡献最大的类群.率水浮游动物群落从上游到下游的空间分布不均匀,种类和丰度都表现为中游略高于上下游.基于物种组成对所有样点的群落进行聚类分析,划分为5种不同的群落类型,群落间特征差异较大.基于指示种的组成和丰度进行水质评价表明:率水水质介于寡(o)污染到寡-中(o-β)污染水平之间.冗余分析表明:溶解氧(DO)、溶解性物质及相关指标(总溶解性固体(TDS)、盐度(Sal)、电导率(SpCond))和化学需氧量(COD Mn)是影响浮游动物群落的重要环境因子.In August 2018,we set 19 sampling sites in Shuaishui River which is the biggest tributary of Xin’an River,to collect zooplankton samples and measure in situ physicochemical variables.The results showed that a total of 22 species belonging to 2 families 19 genera were recorded from Shuaishui River.Of them 20 species in 17 genera belong to Rotifera,and 2 species in 2 genera belong to Copepods.There were no Cladocera species found from the river.The abundance of zooplankton in the river was quite low(average value:123 L^-1,varied between 7~1675 L^-1).Rotifer contributed most to zooplankton species composition and biomass of the river.Distribution of zooplankton community was not even spatially,and both species richness and abundance of zooplankton in midstream were slightly higher than those in up-and down-streams.Based on species composition,the communities in all the sample sites were clustered and divided into five quite different community types.Zooplankton abundance varied among groups.Water quality assessment results based on the species composition and abundance of indicator species indicated that Shuaishui River was at the level of o-oligomeric pollution or o-beta oligo-middle pollution.Redundancy analysis(RDA)showed that indicators,such as dissolved oxygen(DO),dissolved matters and related variables(TDS:total dissolved solids;Sal:salinity;SpCond:conductivity)and COD Mn(chemical oxygen demand)were vital environmental factors affecting zooplankton community.

关 键 词：浮游动物 群落类型 环境因子 小型河流 

分 类 号：Q145.2[生物学—生态学]