BAI Hai-feng1,ZHAO Nai-xi1,YIN Xu-wang1,LU Yuan-yuan1,WU Wei2,XU Zong-xue2
1.Key Laboratory of Hydrobiology in Liaoning Province, Dalian Ocean University, Dalian 116023, China; 2.College of Water Sciences, Beijing Normal University, Beijing 100875, China
Abstract: The community structure of zooplankton and characteristics of environment were investigated in 60 sampling sites in the Weihe River basin, as the largest tributary of the Yellow River, Northwest China, in September and October of 2012. It was found that there were 76 zooplankton species belonging to 35 genera, with density of 0-198.6 ind./L, an average 29.6 ind./L, and biomass of 0-0.604 mg/L, an average biomass of 0.035 mg/L. The density and biomass of zooplankton in different water areas were arranged as Weihe River(901.75 ind. /L,1.021 8 mg/L) > Beiluohe River (750.05 ind./L,0.915 6 mg/L) > Jinghe River(126.15 ind./L,0.145 3 mg/L),indicating that there was significant difference in the zooplankton community structure in Weihe River. The canonical correspondence analysis indicated that the community structure of zooplankton in Weihe River basin was primarily affected by the water environment including temperature, degree of saturation, discharge and pH. The water in Weihe River was found to be slightly polluted, and a simple zooplankton community structure.
2014, Vol. 29 
