贵州打邦河夏季大型底栖动物群落功能摄食类群特征  

Functional feeding groups of summer macroinvertebrates in Dabang River,Guizhou

作　　者：邹泓光 孔维静[1] 杜彩丽 赵琛 殷旭旺[2] ZOU Hongguang;KONG Weijing;DU Caili;ZHAO Chen;YIN Xuwang(Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Dalian Ocean University,Dalian 116023,China)

机构地区：[1]中国环境科学研究院,北京100012 [2]大连海洋大学,大连116023

出　　处：《应用与环境生物学报》2024年第2期402-409,共8页Chinese Journal of Applied and Environmental Biology

基　　金：贵州省打邦河生态调查评估。

摘　　要：为阐明喀斯特地貌区河流大型底栖动物群落功能摄食类群特征,于2022年8月对贵州省打邦河38个样点的大型底栖动物群落进行了调查,同时获取了各样点的河流生境以及水环境因子数据.基于获取的数据,分析大型底栖动物群落功能摄食类群的组成和空间分布,表征基于功能摄食类群的生态系统功能,研究影响大型底栖动物群落功能摄食类群数量和生态系统功能的主要环境因子.自打邦河夏季共采集到大型底栖动物102种,直接收集者、刮食者、过滤集食者、捕食者、撕食者分别有38、30、10、17和7种,相对丰度分别为23.27%、47.88%、16.47%、10.71%、1.67%;空间上,各河流等级存在不同的大型底栖动物群落优势功能摄食类群;冗余分析结果显示,影响打邦河功能摄食类群数量的主要环境因子是Ca2+、HCO3-、NH4+、Na+、TW和河道变化,影响生态系统功能的主要环境因子是HCO3-、NH4+、NO3-、堤岸稳定性和植被多样性.本研究表明打邦河夏季大型底栖动物群落功能摄食类群以刮食者为主,水中HCO3-浓度是影响功能摄食类群数量和生态系统功能的重要原因.(图3表5参48)To elucidate the characteristics of functional feeding groups within river macroinvertebrate communities in karstic landscapes,our study focused on the Dabang River in Guizhou Province.In August 2022,we obtained data on river habitat and water quality factors at each sample site.The composition and spatial distribution of FFGs and ecosystem functions in different river classes were analyzed,and the major environmental factors affecting FFGs and ecosystem functions were investigated using ranking analysis.The result shows that a total of 102 macroinvertebrate species were collected in Dabang River in the summer and 38,30,10,17 and 7 species of gather-collectors,scrapers,filter-collectors,predators and shredders were present,with relative abundances of 23.27%,47.88%,16.47%,10.71%,and 1.67%,respectively.The dominant functional feeding groups of macroinvertebrate communities varied significantly between river classes;the results of redundancy analysis showed that the major environmental factors affecting the number of functional feeding groups were Ca^(2+),NH_(4)^(+),HCO_(3)^(-),Na^(+),water temperature,and river channel change.Conversely,the major environmental factors affecting ecosystem functions were NH_(4)^(+),HCO_(3)^(-),NO_(3)^(-),bank stability,and vegetation diversity.This study showed that the functional feeding groups of macroinvertebrates in the Dabang River were dominated by scraps.Moreover,the concentration of HCO3-was an important factor influencing the number of functional feeding groups and ecosystem functions in the area.

关 键 词：河流等级 河流生境因子 水环境因子 功能摄食类群 生态系统功能 

分 类 号：Q95[生物学—动物学]