湖泊科学2017，Vol.29Issue(6)：1433-1443,11.DOI:10.18307/2017.0615
广州市不同类型水体轮虫群落结构的时空变动及与理化因子间的关系
Spatial and temporal variation in rotifer community structure and the response to environmental factors among different water bodies in Guangzhou City
摘要
Abstract
Rotifers,a kind of essential plankton in aquatic ecosystem,is sensitive to environmental changes and playes an important role in food chain and microbial foodweb.Environmental factors and rotifer samples were collected from five type of water bodies (lake,pond,river,reservoir and estuary) in July and December,2015,Guangzhou City.A total of 76 specie was identified,which belonging to 26 genera.The dominant species were Anuraeopsisfissa,in river in July and decreasing in December.The evenness index and the diversity index of river and estuary in winter were much higher than those in summer.Rotifer abundance ranged from 33 to 2625 ind./L.The abundances of rotifer in city lakes in summer were higher than those in winter,while opposite situation for the ponds.Analysis of similarities(ANOSIM) determined that the community structure was significant different among the different water bodies.These differences came from the abundance of dominant species,especially the river and lakes.Owing to the largest contribution rate of lakes made by Polyarthra vulgaris and that of river made by Trichocerca pusilla and A.fissa,the community structure of rotifers was significantly different.Statistical analysis showed that there was a positive correlation between chlorophyll-a concentrations and rotifer abundance.Redundancy analysis and ANOSIM analysis represented that P.vulgaris was more likely to dominated in lentic water,such as Lake Liuhua which contented of high chlorophyll-a concentration.A.fissa and Brachionus angularis were dominant in the Guangzhou segment of the Pearl River,the lotic waters with high total nitrogen and total phosphorus concentrations.In summary,the waters in Guangzhou City were eutrophic and measures should be taken to protect urban aquatic ecosystem.关键词
轮虫/群落结构/广州市/富营养化Key words
Rotifer/community structure/Guangzhou City/eutrophication引用本文复制引用
梁迪文,王庆,魏南,Miloslav Devetter,杨宇峰..广州市不同类型水体轮虫群落结构的时空变动及与理化因子间的关系[J].湖泊科学,2017,29(6):1433-1443,11.基金项目
国家自然科学基金项目(41673080,U1301235)资助. （41673080,U1301235）
