Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
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![]() ![]() ![]() | |
发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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ISSN | 0048-9697 |
2021-03-10 | |
卷号 | 759页码:10 |
关键词 | Mariculture area Coastal environment Laboratory incubation Phosphorus fractionation Sediment analysis Sequential extraction |
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. |
资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences |
收录类别 | SCI |
语种 | 英语 |
关键词[WOS] | SURFACE SEDIMENTS ; PARTICULATE PHOSPHORUS ; RIVER ESTUARY ; SPECIATION ; BURIAL ; FORMS ; WATERS ; LAKE ; BAY ; BIOAVAILABILITY |
研究领域[WOS] | Environmental Sciences & Ecology |
WOS记录号 | WOS:000605764100045 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.yic.ac.cn/handle/133337/27487 |
专题 | 中国科学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 中国科学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 |
通讯作者 | Gao, Xuelu |
作者单位 | 1.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 |
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. |
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