The influence of summer hypoxia on sedimentary phosphorus biogeochemistry in a coastal scallop farming area, North Yellow Sea

doi:10.1016/j.scitotenv.2020.143486

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 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, Bo 2,3,4; Gao, Xuelu 2,3,4; Zhao, Jianmin 2,4; Liu, Yongliang 2,3; Gao, Tianci 2,3; Lui, Hon-Kit 1; Huang, Ting-Hsuan 1; Chen, Chen-Tung Arthur 1; Xing, Qianguo 2,4
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-03-10
卷号	759 页码:10
关键词	Mariculture area Coastal environment Laboratory incubation Phosphorus fractionation Sediment analysis Sequential extraction
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.143486
通讯作者	Gao, Xuelu(xlgao@yic.ac.cn)
英文摘要	In 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.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050303]
WOS关键词	SURFACE SEDIMENTS ; PARTICULATE PHOSPHORUS ; RIVER ESTUARY ; SPECIATION ; BURIAL ; FORMS ; WATERS ; LAKE ; BAY ; BIOAVAILABILITY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000605764100045
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/27486]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室烟台海岸带研究所_山东省海岸带环境工程技术研究中心
通讯作者	Gao, Xuelu
作者单位	1.Natl Sun Yat Sen Univ, Dept Oceanog, Kaohsiung 80424, Taiwan 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Zone Environm Proc & Ecol Rem, Yantai 264003, Shandong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Shandong, Peoples R China
推荐引用方式 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.