环境因子对浮游甲壳动物群落功能多样性的影响  

Effects of environmental factors on the functional diversity of crustacean zooplankton community

作　　者：王松波 史昭锦 耿红[2] 吴来燕 曹艳敏 Wang Songbo;Shi Zhaojin;Geng Hong;Wu Laiyan;Cao Yanmin(College of Resources and Environmental Science,South-Central University for Nationalities,Wuhan 430074,P.R.China;College of Life Sciences,South-Central University for Nationalities,Wuhan 430074,P.R.China)

机构地区：[1]中南民族大学资源与环境学院,武汉430074 [2]中南民族大学生命科学学院,武汉430074

出　　处：《湖泊科学》2021年第4期1220-1229,共10页Journal of Lake Sciences

基　　金：国家自然科学基金项目(31200361);中南民族大学中央高校专项基金项目(CZY16012,17016)联合资助.

摘　　要：基于功能性状的生物多样性分析是当前生态学研究中的常用方法之一.浮游动物作为水生态系统食物网的重要组成成分,其功能多样性受关注的程度远不如其重要性.本文通过对14个水体浮游甲壳动物群落结构的研究,分析了环境因子对其功能多样性指数,包括功能丰富度(FRic)、功能均匀度(FEve)、功能离散度(FDiv)和功能分散度(FDis),以及功能群分布的影响.结果显示,亲缘关系近的物种(在分类学上相近)由于具有相似的功能性状,均很好地聚为一类.相关分析显示,FRic、FEve和FDiv与环境因子之间不存在显著的相关关系;FDis与总溶解性氮、总溶解性磷、氨氮和悬浮物C/P比存在显著的相关关系.回归分析发现,随着水体总溶解性磷浓度的上升,浮游甲壳动物的物种数表现出下降趋势,功能群数量、功能群Shannon-Wiener指数和FDis均显著下降;另外,FRic和FDis与功能群数量均呈显著正相关.这些结果表明水体富营养化能促进浮游甲壳动物群落功能性状的趋同,环境选择是群落结构变异的主要驱动力之一.Methods based on functional traits are widely used in current biodiversity studies.As an important component of aquatic food web,the attention paid on zooplankton by researchers is disproportional to its functional importance.In the present study,the effects of environmental factors on functional diversity indices as well as on distribution of functional groups of crustacean zooplankton communities in 14 waterbodies were investigated.The results showed that species with similar functional traits were grouped together and phylogenetically related.Correlation analysis found no significant correlation between functional richness(FRic),functional evenness(FEve),functional divergence(FDiv)and environmental factors.However,significant relationships were found for functional dispersion(FDis)in relation to total dissolved nitrogen,total dissolved phosphorus(TDP),ammonia nitrogen and seston C/P ratio.Regression analysis found that except species richness,number and Shannon-Wiener index of functional groups as well as FDis all declined significantly with the increasing concentration of TDP.In addition,FRic and FDis were both positively correlated with the number of functional groups.These results suggest that eutrophication induces the clustering of functional traits of crustacean zooplankton,and environmental filtering is one of the major forces in driving the formation of crustacean zooplankton community structure.

关 键 词：功能性状 功能群 聚类分析 环境滤过 浮游甲壳动物 

分 类 号：Q958.8[生物学—动物学]