The composition and temporal-spatial dynamics of phytoplankton community in Baiyangdian Lake were investigated from April to November of 2010,and main environmental factors affecting composition of community were analyzed by Redundancy analysis(RDA).Results showed that 183 species(genera)including 8 phyla of phytoplankton were identified,and the dominant phyla were found to be the Cyanophyta,Chlorophyta and Bacillariophyta.Phytoplankton density ranged from 8.68×106 to 314.32×106 /L,and the highest density was observed in autumn(September)and the lowest in winter(November).Shannon-Wiener biodiversity index and evenness in Caiputai were highest,but that in Wangjiazhai and Nanliuzhuang were lower.Water temperature,transparency and CODMn had strong effects on the community of phytoplankton,pH and total phosphorus correlated with species of Cyanophyta and Chlorophyta.To control the enviromental release of organic pollutants and phosphorus is the key approach to reduce the eutrophication risk in Baiyangdian Lake.
LIU Cunqi
,
KONG Xiangling
,
ZHANG Zhirong
,
TIAN Zhifu
. Dynamics of phytoplankton community in Baiyangdian Lake based on the redundancy analysis(RDA)[J]. Journal of Hebei University(Natural Science Edition), 2016
, 36(3)
: 278
-285
.
DOI: 10.3969/j.issn.1000-1565.2016.03.010
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