Impacts of algal blooms on sinking carbon flux and hypoxia off the Changjiang River estuary

doi:10.1007/s00343-022-2278-8

	Impacts of algal blooms on sinking carbon flux and hypoxia off the Changjiang River estuary
	Li, Zhao 1,2; Zhang, Yingxin 2,3,4; Song, Shuqun 2,3,5; Li, Caiwen 2,3,5
	2023-09-15
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	17
通讯作者	Song, Shuqun(songshuqun@qdio.ac.cn)
摘要	Based on 10 multidisciplinary investigations conducted from February 2015 to January 2016, the phytoplankton community and its association with ambient seawater physicochemical parameters in the Changjiang (Yangtze) River estuary (CE) and its adjacent waters were comprehensively examined. In total, 265 taxa were identified, belonging to 5 phyla and 94 genera. Diatoms (63.78%) and dinoflagellates (33.21%) were the dominant groups. The variation of diatom abundance showed a positive relationship with the nutrient concentrations while the dinoflagellate abundance showed a negative relationship. Two algal bloom events occurred during the investigation period. The Changjiang Diluted Water (CDW) induced environmental gradients in the upper layer, favoring the diatom bloom in July. The invasion of the nearshore Kuroshio branch current could affect the formation of a bloom of Prorocentrum donghaiense. With the blooming and senescence of phytoplankton, low dissolved oxygen (DO) and hypoxia occurred in the bottom waters. The bottom DO concentration displayed a significantly negative correlation with phytoplankton carbon flux. The present study provides straightforward evidence for the source of organic matter for oxygen consumption in the CE and its adjacent waters.
关键词	phytoplankton community structure algal blooms carbon flux hypoxia
DOI	10.1007/s00343-022-2278-8
收录类别	SCI
语种	英语
资助项目	The data were generated with the help of Prof. Zhiming YU at IOCAS.
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:001068712100001
出版者	SCIENCE PRESS
WOS关键词	EAST CHINA SEA ; PHYTOPLANKTON COMMUNITY ; OXYGEN-CONSUMPTION ; DIATOM ASSEMBLAGES ; ADJACENT ; EUTROPHICATION ; WATERS ; SEDIMENTATION ; VARIABILITY ; NUTRIENTS
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/181695
专题	海洋生态与环境科学重点实验室
通讯作者	Song, Shuqun
作者单位	1.Shandong Jianzhu Univ, Sch Municipal & Environm Engn, Jinan 250101, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Laoshan Lab, Marine Ecol & Environm Sci Lab, Qingdao 266237, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
第一作者单位	海洋生态与环境科学重点实验室
通讯作者单位	海洋生态与环境科学重点实验室
推荐引用方式 GB/T 7714	Li, Zhao,Zhang, Yingxin,Song, Shuqun,et al. Impacts of algal blooms on sinking carbon flux and hypoxia off the Changjiang River estuary[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2023:17.
APA	Li, Zhao,Zhang, Yingxin,Song, Shuqun,&Li, Caiwen.(2023).Impacts of algal blooms on sinking carbon flux and hypoxia off the Changjiang River estuary.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,17.
MLA	Li, Zhao,et al."Impacts of algal blooms on sinking carbon flux and hypoxia off the Changjiang River estuary".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2023):17.