Spatiotemporal changes of biogenic elements in the Changjiang River Estuary and adjacent waters in summer over the last decade

被引:3
|
作者
Yang, Lu [1 ]
Zhang, Yujia [1 ]
Wang, Xiaoli [1 ]
Wang, Qiulu [1 ]
He, Long [1 ]
Li, Xiao [1 ]
机构
[1] Natl Marine Data & Informat Serv, Tianjin 300171, Peoples R China
关键词
Changjiang River Estuary; biogenic elements; spatiotemporal changes; EAST CHINA SEA; TEMPORAL-SPATIAL DISTRIBUTION; YANGTZE-RIVER; PHYTOPLANKTON COMMUNITY; DISSOLVED-OXYGEN; EUTROPHICATION; RESPONSES; NITROGEN; IMPACTS; DECLINE;
D O I
10.1007/s13131-022-2104-3
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
The long-term spatiotemporal changes of surface biogenic elements in the Changjiang River Estuary and adjacent waters during the summer of 2008-2016 were analyzed in this study. The concentrations of dissolved inorganic nitrogen (DIN), soluble reactive phosphate (PO34<inverted exclamation> SiO23<inverted exclamation>) and silicate ( PO34<inverted exclamation> SiO23<inverted exclamation>) were generally stable, with a slight decrease of DIN and, and a slight increase of, which mainly occurred in the estuarine waters. The grey correlation analysis was carried out between biogenic elements and chlorophyll a (Chl-a). Results showed that compared with the absolute values of biogenic elements, the correlations between the concentration ratio of nitrogen to phosphorus (N/P), ratio of silicon to nitrogen (Si/N) and Chl-a were closer, indicating the important influence on phytoplankton by the structure of biogenic elements. The study area was generally in a state of potential P limitation, and could have potential impact on the phytoplankton community, triggering the shift of red tide dominant species from diatoms to dinoflagellates.
引用
收藏
页码:83 / 90
页数:8
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