Abstract
It was investigated and analyzed about the species composition of phytoplankton, and their relations to environmental factors sampled in spring, summer and autumn in 2001-2011 in Fuxian Lake (24o 21'~24o 38' N, 102o 49'12 "~102o 57'26"E). The phytoplankton from Fuxian lake included 78 species belong to 41 genera 25 family, 7 phyla. Chlorophyta was predominant, with consisted of 43.5% of total species number. Species number of phytoplankton appeared visible monthly variation. The main predominant phytoplankton species was Mougeotia bloodlei, which accounted for 42.94%~84.94% of total cell density of phytoplankton. The community structures of phytoplankton were consist of Mougeotia bloodlei, Chroococcus spp., Cyclotella spp., Ceratium hirundinella and Dinobryon sertularia.
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