The effect of methane seeps on the bacterial tetraether lipid distributions at the Okinawa Trough
The effect of methane seeps on the bacterial tetraether lipid distributions at the Okinawa Trough
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甲烷渗漏对冲绳海槽细菌四醚脂质分布的影响
DOI:
10.1016/j.marchem.2020.103845
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发表时间:
2020-09
期刊:
影响因子:
3
通讯作者:
Xiaotong Peng
中科院分区:
文献类型:
--
作者:
Zhe-Xuan Zhang;Jiwei Li;Zhiyan Chen;Zhilei Sun;Huan Yang;Meiyan Fu;Xiaotong Peng
The branched glycerol dialkyl glycerol tetraethers (brGDGTs) can be producedin situunder 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 ofin situproduced 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 (Ri/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 formin situin 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.
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影响因子:
6.9
作者:
Liqin Duan;Jinming Song;Xuegang Li;Huamao Yuan
通讯作者:
Huamao Yuan
DOI:
10.1073/pnas.1805186115
发表时间:
2018-10-23
影响因子:
11.1
作者:
Weber Y;Sinninghe Damsté JS;Zopfi J;De Jonge C;Gilli A;Schubert CJ;Lepori F;Lehmann MF;Niemann H
通讯作者:
Niemann H
DOI:
10.1007/s00253-017-8595-8
发表时间:
2018
期刊:
Appl Microbiol Biotechnol
影响因子:
--
作者:
Guo Wenting;Xie Wei;Li Xueying;Wang Peng;Hu Anyi;Zhang Chuanlun L
通讯作者:
Zhang Chuanlun L
影响因子:
3
作者:
Huan Yang;Xiaoxia Lü;Weihua Ding;Yanyan Lei;X. Dang;S. Xie
通讯作者:
Huan Yang;Xiaoxia Lü;Weihua Ding;Yanyan Lei;X. Dang;S. Xie
DOI:
10.1016/j.palaeo.2013.12.006
发表时间:
2014-02
期刊:
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子:
--
作者:
Haoda Zhou;Jianfang Hu;B. Spiro;P. Peng;Jianhui Tang
通讯作者:
Haoda Zhou;Jianfang Hu;B. Spiro;P. Peng;Jianhui Tang