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In situ detection of the fine scale heterogeneity of active cold seep environment of the Formosa Ridge, the South China Sea

文献类型：期刊论文

作者Cao, Lei1,3,4; Lian, Chao1,3,4; Zhang, Xin1,3,4,5,6; Zhang, Huan1,3,4; Wang, Hao1,3,4; Zhou, Li1,3,4; Wang, Minxiao1,2,3,4; Chen, Hao1,3,4; Luan, Zhendong1,3,4,5; Li, Chaolun1,2,3,4,6
刊名JOURNAL OF MARINE SYSTEMS
出版日期2021-06-01
卷号218页码:10
关键词Cold seep In situ detection Origin of methane Chemosynthetic ecosystem Environmental condition
ISSN号0924-7963
DOI10.1016/j.jmarsys.2021.103530
通讯作者Li, Chaolun(lcl@qdio.ac.cn)
英文摘要The active cold seep at Formosa Ridge (Site F) sustains the most flourishing ecosystem on the continental slope of the northern South China Sea. However, the physicochemical environment around the cold seep has scarcely been investigated. The knowledge about the variability of the seafloor habitat around the cold seep was poor and the key processes within the associated chemosynthetic ecosystem remain unclear. Here, we used an in situ integrated sensors detection approach combined with geochemical measurements to investigate the environmental condition around the chemosynthetic ecosystems fueled by the hydrocarbon seepage. Methane, hydrogen sulfide, dissolved oxygen and other biogenic elements in the bottom water were detected on a fine scale. The mixed gas composition and carbon isotope value of methane from the vent fluids suggested its origin was predominantly biogenic with slight thermogenic incorporation. Both horizontal and vertical variations in methane and oxygen concentrations were observed, which showed contrasting trends in fields from the center of flourishing communities to the margin of sediments. The concentration of methane decreased from 31,200 ppm at the flourishing center to 381 ppm at the margin on a horizontal gradient. The low concentration of hydrogen sulfide indicated that sulfide could be an energy-limiting factor for chemoautotrophic symbionts. The in situ oxygen levels were variable near the flourishing community but homogeneous at the margins. The results suggested that the availability of oxygen and methane played a substantial role in structuring the seep communities. Overall, from the flourishing center to the periphery, the chemical gradients drive the spatial distribution of chemosynthetic community at site F. The observations of the fine scale survey highlight the heterogeneity of microenvironments and provide novel information on the environmental dynamics within site F for the first time.
资助项目Open Research Project of National Major Science & Technology Infrastructure (RV KEXUE)[NMSTI-KEXUE2017K01] ; National Natural Science Foundation of China[42030407] ; National Natural Science Foundation of China[42076091] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22050302] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22050303] ; National Key R&D Program of China[2018YFC0310800]
WOS研究方向Geology ; Marine & Freshwater Biology ; Oceanography
语种英语
WOS记录号WOS:000640901600002
出版者ELSEVIER
源URL[http://ir.qdio.ac.cn/handle/337002/170989]  
专题海洋研究所_海洋地质与环境重点实验室
海洋研究所_海洋生态与环境科学重点实验室
海洋研究所_深海极端环境与生命过程研究中心
通讯作者Li, Chaolun
作者单位1.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
5.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Cao, Lei,Lian, Chao,Zhang, Xin,et al. In situ detection of the fine scale heterogeneity of active cold seep environment of the Formosa Ridge, the South China Sea[J]. JOURNAL OF MARINE SYSTEMS,2021,218:10.
APA Cao, Lei.,Lian, Chao.,Zhang, Xin.,Zhang, Huan.,Wang, Hao.,...&Li, Chaolun.(2021).In situ detection of the fine scale heterogeneity of active cold seep environment of the Formosa Ridge, the South China Sea.JOURNAL OF MARINE SYSTEMS,218,10.
MLA Cao, Lei,et al."In situ detection of the fine scale heterogeneity of active cold seep environment of the Formosa Ridge, the South China Sea".JOURNAL OF MARINE SYSTEMS 218(2021):10.

入库方式： OAI收割

来源：海洋研究所

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