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The Influence of Key Environmental Variables on Phytoplankton Community Structure in the Estuary of Tidal Rivers Around Luoyuan Bay,China

查看全文 作　　者：PAN [1]Wenbin;ZHENG [1]Peng;LIANG [1,2]Yunyan;CAI [1]Yuanbin 高影响力作者 机构地区：[1]College of Environment and Resources, Fuzhou University, Fuzhou 350000, P. R. China;[2]Quanzhou Environmental Monitoring Station, Quanzhou 362000, P. R. China高影响力机构 出　　处：《Journal of Ocean University of China》索引2017年第16卷第5期,共11页高影响力期刊 基　　金：financially supported by China Shenhua Energy Company Limited 摘　　要：A total of 348 species belonging to 8 phyla and 125 genera were observed in seasonally sampled phytoplankton of tidal rivers from 13 sampling sites around Luoyuan Bay, and all field samplings were carried out in productive period(March/June/August/December) at ebb tide. Bacillariophyta species were the most abundant species, followed by Chlorophyta, Cyanophytes, Euglenophyta, Cryptophyta, Dinophyta, Xanthophyta and Chrysophytas. Seasonal distribution index(SDI) value ranged from 0.63 to 0.86, which meant that species found at those sites in 4 seasons tended to be largely different. Phytoplankton individuals ranged from 5.939×10~4 ind L^(-1) in winter to 75.31×10~4 ind L^(-1) in autumn. Phytoplankton biomass ranged from 0.620 mg L^(-1) in summer to 2.373 mg L^(-1) in autumn. The grey correlation analysis(GCA) showed that the nutrient variables played an important role in the influence on phytoplankton community in every season. The canonical correspondence analysis(CCA) revealed impact of environmental variables on the different species, most of Bacillariophyta species were negative correlation with nutrients(TP and NH_3-N) in the four seasons, Chlorophyta species and Cyanophyta species did not show obvious correlation with environment variables in every season. The combination of GRA analysis and CCA analysis provided a method to quantitatively reveal the correlation between phytoplankton community and environmental variables in water body of tidal rivers at this region. 关 键 词：环境变量 植物群落结构 罗源湾 潮汐河流 浮游植物生物量 灰色关联分析 浮游植物群落 季节分布
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