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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
Source PublicationESTUARINE COASTAL AND SHELF SCIENCE
ISSN0272-7714
Volume208Pages:170-179
SubtypeArticle
AbstractThe 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.
KeywordPhytoplankton Community structure Sinking rates Hypoxia SETCOL method
Subject AreaMarine & Freshwater Biology ; Oceanography
DOI10.1016/j.ecss.2018.05.007
Indexed BySCIE
Language英语
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS IDWOS:000437553400017
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/157543
Collection海洋生态与环境科学重点实验室
Affiliation1.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
First Author AffilicationKey Laboratory of Marine Ecology & Environmental Sciences, CAS
Recommended Citation
GB/T 7714
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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