Winter dynamics of phytoplankton community and cyanobacterial blooms in Dashahe Reservoir,Guangdong
LI Ji-dong1, XIAO Li-juan1,2, HU Ren1,2
1. Institute of Hydrobiology, Jinan University, Guangzhou 510632, China; 2. Control and Mitigation Center of Cyanobacterial Blooms of Guangdong Province, Water Resources Department of Guangdong Province and Jinan University, Guangzhou 510632, China
Phytoplankton communities at the water depth of 0.5,5,and 10 m were investigated in the lacustrine zone of Dashahe Reservoir in the winter from December,2009 to February,2010.Total precipitation in the three months was 263 mm;temperature ranged from 15.5℃to 19.4℃;the water column was fully mixed.Sixty four species of phytoplankton belonging to six phyla were identified. Total phytoplankton abundance ranged from 4.1×106 to 14.8×106 cells·L-1.There was no significant difference in the dominant phytoplankton species at the three water layers.Anabaena circinalis and Microcystis aeruginosa were the predominant species,and contributed to about 70%of total abundance in all of the sampling periods at all depths.Anabaena and Microcystis blooms slightly occurred in the December of 2009 and February of 2010.The regulating buoyancy of cyanobacteria,as well as low availability of phosphorus and light led to the dominance of the two species.
李季东1, 肖利娟1,2, 胡韧1,2*. 大沙河水库冬季浮游植物群落结构与水华分析[J]. , 2011, 30(5): 500-506.
LI Ji-dong1, XIAO Li-juan1,2, HU Ren1,2. Winter dynamics of phytoplankton community and cyanobacterial blooms in Dashahe Reservoir,Guangdong. , 2011, 30(5): 500-506.
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