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

doi:10.1016/j.jmarsys.2021.103530

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	In situ detection of the fine scale heterogeneity of active cold seep environment of the Formosa Ridge, the South China Sea
	Cao, Lei 3,5,6; Lian, Chao 3,5,6; Zhang, Xin 1,2,3,5,6; Zhang, Huan 3,5,6; Wang, Hao 3,5,6; Zhou, Li 3,5,6; Wang, Minxiao 3,4,5,6; Chen, Hao 3,5,6; Luan, Zhendong 2,3,5,6; Li, Chaolun 1,3,4,5,6
刊名	JOURNAL OF MARINE SYSTEMS
	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
DOI	10.1016/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
出版者	ELSEVIER
WOS记录号	WOS:000640901600002
内容类型	期刊论文
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, 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.