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The sinking of the phytoplankton community and its contribution to seasonal hypoxia in the Changjiang (Yangtze River) estuary and its adjacent waters
Li, Zhao1,2; Song, Shuqun1; Li, Caiwen1,2; Yu, Zhiming1,2
2018-08-31
发表期刊ESTUARINE COASTAL AND SHELF SCIENCE
ISSN0272-7714
卷号208页码:170-179
文章类型Article
摘要The phytoplankton sinking rates and the annual variations of dissolved oxygen (DO) were studied as part of a multi-disciplinary investigation in the Changjiang (Yangtze River) Estuary (CE) and its adjacent waters from February 2015 to January 2016. The sinking rates of phytoplankton ranged from 0.02 to 3.49 m d(-1), determined with the homogeneous sample method SETCOL. There was clear correlation between sinking rate and the phytoplankton composition. The diatom-dominated community had higher sinking rates than the dinoflagellate-dominated community, and the variation in DO concentration indicated a close relationship with the blooming and senescence of phytoplankton. Low DO (< 3 mg L-1) or hypoxic (< 2 mg L-1) zones were observed in near-bottom waters between July and October. Hypoxia reached its maximum in October, with a low DO zone covering approximately 4500 km(2) of the survey area. The zones of lowest DO in near-bottom water were closely associated with zones of the highest chlorophyll a (Chl a) and the highest phytoplankton sinking rates in the upper layer. The present study presents straightforward evidence on the formation of low DO and hypoxia in near-bottom waters and its correlation with sinking of the phytoplankton community, and provides useful insight to reveal the formation mechanism of seasonal hypoxia in the CE and its adjacent waters.
关键词Phytoplankton Community structure Sinking rates Hypoxia SETCOL method
学科领域Marine & Freshwater Biology ; Oceanography
DOI10.1016/j.ecss.2018.05.007
收录类别SCIE
语种英语
WOS研究方向Marine & Freshwater Biology ; Oceanography
WOS记录号WOS:000437553400017
出版者ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
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被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/157543
专题海洋生态与环境科学重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位海洋生态与环境科学重点实验室
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Li, Zhao,Song, Shuqun,Li, Caiwen,et al. The sinking of the phytoplankton community and its contribution to seasonal hypoxia in the Changjiang (Yangtze River) estuary and its adjacent waters[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2018,208:170-179.
APA Li, Zhao,Song, Shuqun,Li, Caiwen,&Yu, Zhiming.(2018).The sinking of the phytoplankton community and its contribution to seasonal hypoxia in the Changjiang (Yangtze River) estuary and its adjacent waters.ESTUARINE COASTAL AND SHELF SCIENCE,208,170-179.
MLA Li, Zhao,et al."The sinking of the phytoplankton community and its contribution to seasonal hypoxia in the Changjiang (Yangtze River) estuary and its adjacent waters".ESTUARINE COASTAL AND SHELF SCIENCE 208(2018):170-179.
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