The effect of methane seeps on the bacterial tetraether lipid distributions at the Okinawa Trough
文献类型：期刊论文
| 作者 | Zhang, Zhe-Xuan4,5 ; Li, Jiwei5; Chen, Zhiyan4,5; Sun, Zhilei3; Yang, Huan2; Fu, Meiyan1; Peng, Xiaotong5
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| 刊名 | MARINE CHEMISTRY
 |
| 出版日期 | 2020-09-10 |
| 卷号 | 225页码:9 |
| 关键词 | GDGTs East China Sea AOM Cold seep |
| ISSN号 | 0304-4203 |
| DOI | 10.1016/j.marchem.2020.103845 |
| 英文摘要 | The branched glycerol dialkyl glycerol tetraethers (brGDGTs) can be produced in situ under methanotrophic/hypoxic conditions in lakes. However, the effect of dynamic methanotrophic activities in the widely-distributed seafloor methane seeps on brGDGTs distributions in global continent margins remains enigmatic. In this study, we firstly report the occurrence of in situ produced brGDGTs in cold seep environments, based on the analysis of tetraether lipid distributions in the authigenic carbonates collected from the northern section of the Okinawa Trough (OT). The abundance ratio of isoGDGTs to brGDGTs (R-i/b) was much lower in the authigenic carbonates (0.94 to 2.25) than in the adjacent normal marine sediments (> 10) and suspended particulate matter (> 60) in the East China Sea (ECS). Such significant higher bacterial branched GDGTs ratios in the authigenic carbonates indicate its additional sources besides terrestrial and/or water column inputs. Specifically, the brGDGT (Ia), brGDGT (IIa) and brGDGT (IIa') appear to form in situ in cold seeps, and are influenced by the methane flux significantly as indicated by the fractional abundances of GDGTs along the transect of pipes, network analysis, and correlations between Methane Index (MI) and brGDGTs. Our study highlights that the distributions of seafloor methane seeps could impact the bacterial tetraether lipid distributions in ocean, which would hamper the universal application of brGDGT-based proxies for terrigenous organic carbon tracing and paleoclimate reconstruction in marine environments. |
| WOS关键词 | DIALKYL GLYCEROL TETRAETHERS ; ORGANIC-MATTER ; COLD SEEPS ; CHINA SEA ; SEDIMENTS ; RIVER ; MARINE ; GDGTS ; INSIGHTS ; PROXIES |
| 资助项目 | Hainan Provincial Natural Science Foundation of China[419MS077] ; National Key Research and Development Program of China[2017YFC0306604] ; National Natural Science Foundation of China[41876050] ; National Natural Science Foundation of China[41576038] ; District Cooperation Program from Sanya City, China[2014YD04] ; Youth Innovation Promotion Association CAS |
| WOS研究方向 | Chemistry ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000563903100004 |
| 出版者 | ELSEVIER |
| 资助机构 | Hainan Provincial Natural Science Foundation of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; District Cooperation Program from Sanya City, China ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.idsse.ac.cn/handle/183446/7905]  |
| 专题 | 研究生部 深海科学研究部_深海地质与地球化学研究室 专家咨询委员会 |
| 通讯作者 | Li, Jiwei; Peng, Xiaotong |
| 作者单位 | 1.Chengdu Univ Technol, Coll Energy Resources, Chengdu 610059, Peoples R China 2.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China 3.Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China 4.Univ Chinese Acad Sci, Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zhe-Xuan,Li, Jiwei,Chen, Zhiyan,et al. The effect of methane seeps on the bacterial tetraether lipid distributions at the Okinawa Trough[J]. MARINE CHEMISTRY,2020,225:9. |
| APA | Zhang, Zhe-Xuan.,Li, Jiwei.,Chen, Zhiyan.,Sun, Zhilei.,Yang, Huan.,...&Peng, Xiaotong.(2020).The effect of methane seeps on the bacterial tetraether lipid distributions at the Okinawa Trough.MARINE CHEMISTRY,225,9. |
| MLA | Zhang, Zhe-Xuan,et al."The effect of methane seeps on the bacterial tetraether lipid distributions at the Okinawa Trough".MARINE CHEMISTRY 225(2020):9. |
入库方式： OAI收割
来源：深海科学与工程研究所
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