Impact of salinity variation and silicate distribution on phytoplankton community composition in Pearl River estuary, China
文献类型： 外文期刊
作者： Xu, Shannan 1 ; Liu, Yong 1 ; Fan, Jiangtao 1 ; Xiao, Yayuan 1 ; Qi, Zhanhui 1 ; Lakshmikandan, Manogaran 3 ;
作者机构： 1.Chinese Acad Fishery Sci, Key Lab South China Sea Fishery Resources Exploita, South China Sea Fisheries Res Inst, Minist Agr & Rural Affairs,Guangdong Prov Key Lab, Guangzhou 510300, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou 511458, Peoples R China
3.Jiangsu Univ, Sch Energy & Power Engn, Zhenjiang 212013, Jiangsu, Peoples R China
关键词： Pearl River Estuary; Diatoms; Non-metric Multidimensional Scaling; Canonical Correspondence Analysis; Phytoplankton
期刊名称：ECOHYDROLOGY & HYDROBIOLOGY （ 影响因子：2.957； 五年影响因子：3.1 ）
ISSN： 1642-3593
年卷期： 2022 年 22 卷 3 期
页码：
收录情况： SCI
摘要： Monitoring the primary producer diversity is crucial in understanding ecosystems balance, as imbalanced nutrients richness and diversity may induce red tide situations. The present study deals with evaluating the impact of hydrological factors regulating the dynamics of phytoplankton communities and the influence of chemical parameters on phytoplankton growth in Pearl River Estuary (PRE). During wet season (April), around 50 different species of phytoplankton were identified at 14 different sampling sites including 24 diatoms, 9 di-noflagellates, 10 green algae and 6 cyanobacterial species respectively. The diatom Melosira granulate was the dominant species at most of the sampling sites. Phytoplankton surveys during the dry season (November) showed Bellerochea malleus and Skeletonema costatum species as dominant at most of the sampling locations. Silicate (SiO3) distribution was one of the reason for the abundance of diatoms in west shoal sites. The concentration of nu-trients and hydrological factors like water depth and salinity strongly supported phyto-plankton growth. In addition, PRE west and middle shoal sites showed evidence of rich phytoplankton diversity when compared to east shoal and channel sites. The Non-metric Multidimensional Scaling (NMDS) analysis and cluster grouping analysis demonstrated the uniqueness of plankton species diversity at PRE west and east shoal sites. The results of Canonical Correspondence Analysis (CCA) suggested that diversity of phytoplankton com-munities was significantly influenced by environmental factors such as salinity, depth and
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