In May and Nov 2005, the water quality and phytoplankton in a eutrophic reservoir, Henggang Reservoir, were investigated to analyze the species composition and abundance distribution of phytoplankton. In May, the average abundance of phytoplankton was 275.41×106cells·L-1, and the average biomass of phytoplankton was 31.07mg·L-1. Merismopedia elgans and Merismopedia glauca were the only two dominant species, contributed over 90% of total phytoplankton abundance. In November, the composition of phytoplankton community had a significant change. The average abundance of phytoplankton decreased to 12.69 ×106cells·L-1, and the average biomass was 20.78 mg·L-1. In the observed 16 species of Cyanophyta, the abundance of Merismopedia elgans and Merismopedia glauca decreased largely. Desmidiaceae, Pediastrum, Scenedesmus had high abundance, and the species numbers of Chlorophyta increased to 48. The biomass of large sized phytoplankton increased largely, especially the species which equivalent radiuses were over 20μm. In the November, the phytoplankton and nutrients were diluted with the increase in stored water. The seasonal change in precipitation caused by monsoon was the main physical factor affecting phytoplankton community in Henggang reservoir.
林娴1, 陈绵润2, 韩博平2*. 横岗水库浮游植物种类组成与时空分布[J]. , 2007, 26(4): 303-310.
LIN Xian1, CHEN Mian-Run2, HAN Bo-Ping2. Species composition and spatio-temporal distribution of phytoplankton in Henggang Reservoir. , 2007, 26(4): 303-310.
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