YIC-IR  > 中科院海岸带环境过程与生态修复重点实验室
The influence of summer hypoxia on sedimentary phosphorus biogeochemistry in a coastal scallop farming area, North Yellow Sea
Yang, Bo1,2,3; Gao, Xuelu1,2,3; Zhao, Jianmin1,3; Liu, Yongliang1,2; Gao, Tianci1,2; Lui, Hon-Kit4; Huang, Ting-Hsuan4; Chen, Chen-Tung Arthur4; Xing, Qianguo1,3
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
2021-03-10
Volume759Pages:10
KeywordMariculture area Coastal environment Laboratory incubation Phosphorus fractionation Sediment analysis Sequential extraction
DOI10.1016/j.scitotenv.2020.143486
Corresponding AuthorGao, Xuelu(xlgao@yic.ac.cn)
AbstractIn situ field investigations coupled with laboratory incubations were employed to explore the surface sedimentary phosphorus (P) cycle in a mariculture area adjacent to the Yangma Island suffering from summer hypoxia in the North Yellow Sea. Five forms of P were fractionated, namely exchangeable P (Ex-P), iron-bound P (Fe-P), authigenic apatite (Ca-P), detrital P (De-P) and organic P (OP). Total P (TP) varied from 13.42 to 23.88 mu mol g(-1) with the main form of inorganic P (IP). The benthic phosphate (DIP) fluxes were calculated based on incubation experiments. The results show that the sediment was an important source of P in summer with similar to 39% of the bioavailable P (Bio-P) recycled back into the water column. However, the sediment acted a sink of P in autumn. The benthic DIP fluxes were mainly controlled by the remobilizing of Fe-P, Ex-P and OP under contrasting redox conditions. In August (hypoxia season), similar to 0.92 mu mol g(-1) of Fe-P and similar to 0.52 mu mol g(-1) of OP could be transformed to DIP and released into water, while similar to 0.36 mu mol g(-1) of DIP was adsorbed to clay minerals. In November (non-hypoxia season), however, similar to 0.54 mu mol g(-1) of OP was converted into DIP, while similar to 0.55 mu mol g(-1) and similar to 0.28 mu mol g(-1) of DIP was adsorbed to clay minerals and bind to iron oxides. Furthermore, scallop farming activities also affected the P mobilization through biological deposition and reduced hydrodynamic conditions. The burial fluxes of P varied from 11.67 to 20.78 mu mol cm(-2) yr(-1) and its burial efficiency was 84.7-100%, which was consistent with that in most of the marginal seas worldwide. This study reveals that hypoxia and scallop farming activities can significantly promote sedimentary P mobility, thereby causing high benthic DIP flux in coastal waters. (C) 2020 Elsevier B.V. All rights reserved.
Indexed BySCI
Language英语
WOS KeywordSURFACE SEDIMENTS ; PARTICULATE PHOSPHORUS ; RIVER ESTUARY ; SPECIATION ; BURIAL ; FORMS ; WATERS ; LAKE ; BAY ; BIOAVAILABILITY
WOS Research AreaEnvironmental Sciences & Ecology
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA23050303]
WOS IDWOS:000605764100045
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences
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Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/27487
Collection中科院海岸带环境过程与生态修复重点实验室
海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室
中科院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
Corresponding AuthorGao, Xuelu
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Zone Environm Proc & Ecol Rem, Yantai 264003, Shandong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Shandong, Peoples R China
4.Natl Sun Yat Sen Univ, Dept Oceanog, Kaohsiung 80424, Taiwan
Recommended Citation
GB/T 7714
Yang, Bo,Gao, Xuelu,Zhao, Jianmin,et al. The influence of summer hypoxia on sedimentary phosphorus biogeochemistry in a coastal scallop farming area, North Yellow Sea[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,759:10.
APA Yang, Bo.,Gao, Xuelu.,Zhao, Jianmin.,Liu, Yongliang.,Gao, Tianci.,...&Xing, Qianguo.(2021).The influence of summer hypoxia on sedimentary phosphorus biogeochemistry in a coastal scallop farming area, North Yellow Sea.SCIENCE OF THE TOTAL ENVIRONMENT,759,10.
MLA Yang, Bo,et al."The influence of summer hypoxia on sedimentary phosphorus biogeochemistry in a coastal scallop farming area, North Yellow Sea".SCIENCE OF THE TOTAL ENVIRONMENT 759(2021):10.
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