生态环境学报2011，Vol.20Issue(6)：1102-1106,5.
长江口南北支浮游动物群落生态学研究
Zooplankton community ecology in north and south branches at Yangtze River estuary
摘要
Abstract
The special ecological environment at Yangtze River estuary makes zooplankton there different from other water in ecological characteristics such as species composition, density and time-space distribution etc. Two times' investigations were taken in spring (drought season) and autumn (raining season) from2005 to 2006 along the north and south branches.where three cross-section and 20 survey points were set. A total of 227 zooplankton species were identified, with 65 species of rotifers, 107species of protozoas, IS species of cladocerans and 40 species of copepods. The Keratella, Polyarthra trigla.Brachionns calyciflorus.Difflugia, Arcella,tintinnid,Calanus sinicus, Sinocalanus dorrii.Mesocyclops leuckarti and Bosmina ect were the dominant species.This paper compared the species composition and structure of two branches. The zooplankton species, quantity and biomass in south branch is higher than that in north branch. Zooplankton community similarity in two branches is very low. The different environmental caused much different zooplankton community structure. Correlationship of zooplankton community structure and environmental factors were analyzed, among which water temperature was the important factor that determined the time distribution of zooplankton with seasonal change. The salinity influenced the ecological types and space distribution of zooplankton community structure. As a whole, the north and south branches were controled by Yangtze river, so that the zooplankton species were mainly rever-type and the salt-type appeared more in section 3.关键词
浮游动物/群落/比较/长江口/南北支Key words
zooplankton/community/compare/Yangtze River estuary/north and south branches分类
环境科学引用本文复制引用
郑金秀,胡菊香,彭建华,汪红军..长江口南北支浮游动物群落生态学研究[J].生态环境学报,2011,20(6):1102-1106,5.基金项目
科技部社会公益研究专项资助项目(2003DIB3J080) （2003DIB3J080）
