IOCAS-IR  > 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, Lei1,2,4; Lian, Chao1,2,4; Zhang, Xin1,2,4,5,6; Zhang, Huan1,2,4; Wang, Hao1,2,4; Zhou, Li1,2,4; Wang, Minxiao1,2,3,4; Chen, Hao1,2,4; Luan, Zhendong1,2,4,5; Li, Chaolun1,2,3,4,6
2021-06-01
Source PublicationJOURNAL OF MARINE SYSTEMS
ISSN0924-7963
Volume218Pages:10
Corresponding AuthorLi, Chaolun(lcl@qdio.ac.cn)
AbstractThe 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.
KeywordCold seep In situ detection Origin of methane Chemosynthetic ecosystem Environmental condition
DOI10.1016/j.jmarsys.2021.103530
Indexed BySCI
Language英语
Funding ProjectOpen 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 Research AreaGeology ; Marine & Freshwater Biology ; Oceanography
WOS SubjectGeosciences, Multidisciplinary ; Marine & Freshwater Biology ; Oceanography
WOS IDWOS:000640901600002
PublisherELSEVIER
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/170990
Collection海洋地质与环境重点实验室
海洋生态与环境科学重点实验室
深海极端环境与生命过程研究中心
Corresponding AuthorLi, Chaolun
Affiliation1.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Megasci, 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
First Author AffilicationChinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res;  Institute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationChinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res;  Institute of Oceanology, Chinese Academy of Sciences;  Key Laboratory of Marine Ecology & Environmental Sciences, CAS;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
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.
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