Long-term nutrient variation trends and their potential impact on phytoplankton in the southern Yellow Sea, China
文献类型： 外文期刊
作者： Wang, Yan 1 ; Liu, Yongjian 2 ; Guo, Hao 1 ; Zhang, Haibo 1 ; Li, Dongmei 1 ; Yao, Ziwei 1 ; Wang, Xiaocheng 1 ; Jia, Chuan 1 ;
作者机构： 1.Natl Marine Environm Monitoring Ctr, State Environm Protect Key Lab Coastal Ecosyst, Dalian 116023, Peoples R China
2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China
关键词： southern Yellow Sea; nutrients structure; succession of phytoplankton community; diatom; dinoflagellate
期刊名称：ACTA OCEANOLOGICA SINICA （ 影响因子：1.369； 五年影响因子：1.467 ）
ISSN： 0253-505X
年卷期： 2022 年 41 卷 6 期
页码：
收录情况： SCI
摘要： The concentration and composition of nutrients, such as N, P, and Si, respond to biogeochemical processes and in turn, impact the phytoplanktons' community structure and primary production. In this study, historical data was systematically analyzed to identify long-term variations in nutrient trends, red tide frequency, phytoplankton community abundance, and dominant species succession in the southern Yellow Sea (SYS). Results showed that N/P concentration ratios dramatically increased as a function of increasing dissolved inorganic nitrogen concentrations, and Si/N concentration ratios were generally larger than 1, indicating that N limitation morphed to P limitation and potentially to Si limitation, which impacted the phytoplankton community. Furthermore, inter-annual trends over the past 50 years show that phytoplankton community abundance has been higher in spring and summer, relative to autumn and winter. Moreover, with respect to red tide frequency, diatom abundance gradually decreased, while that of dinoflagellates gradually increased. Dominant species succession showed that the phytoplankton community exhibited an evident tendency to transform from diatoms to dinoflagellates. These research results clearly depict the presence of an important correlation between the phytoplankton community and nutrient structure in the SYS.
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