摘要
研究香溪河大型底栖无脊椎动物群落结构和季节动态特征情况,发现高翔蜉、萝卜螺、河蚬、湖沼股蛤、四节蜉为香溪河水系优势分类单元,各季节底栖动物优势种的组成存在显著差异。冬季的生物密度、生物量、生物多样性指数显著高于其他季节,说明冬季的河流生境最适宜大型底栖无脊椎动物生存。香溪河刮食者丰度最高,撕食者最低,表明香溪河着生藻类丰富;固着型底栖动物在香溪河底栖类群中丰度最高,说明香溪河河流流速较快,生境更适宜固着型动物栖居。不同季节环境因子对大型底栖动物群落结构有显著影响。
In order to understand the community structure and seasonal dynamic characteristics of the large benthic invertebrates in Xiangxi river,Epeorus spp.,Radix spp.,Corbicula fluminea,Limnoperna lacustris and Baetis spp.were found as the dominant units of the Xiangxi river water system.There are also significant differences of the composi⁃tion of dominant species of benthic animals in every season.The winter density,biomass and biodiversity index were sig⁃nificantly higher than other seasons,indicating that winter river habitats are most suitable for large benthic invertebrates.Xiangxi river has the highest abundance scrapers and the lowest rate of shredders,indicating that the Xiangxi river is rich in algae.The fixed benthic animals have the highest abundance in the benthic group of Xiangxi river,indicating that the Xiangxi river has a faster flow rate and its habitat is suitable for sessile animals.
作者
郑子叶
许亚红
张郢
王建柱
罗遵兰
ZHENG Ziye;XU Yahong;ZHANG Ying;WANG Jianzhu;LUO Zunlan(College of Biology and Pharmacy,Three Gorges University,Yichang 443002,Hubei,China;Three Gorges Reservoir Area Ecological Environment Education Engineering Research Center,Yichang 443002,Hubei,China;Chinese Research Academy of Environmental Sciences,Beijing 100012,China)
出处
《生物资源》
CAS
2019年第6期524-531,共8页
Biotic Resources
基金
环保部生物多样性保护专项“生物多样性调查与评估试点项目”2019HJ2096001006
关键词
香溪河
大型底栖动物
群落结构
季节
Xiangxi river
macrobenthos
community structure
season
