Articles | Volume 17, issue 7
Biogeosciences, 17, 2135–2148, 2020
https://doi.org/10.5194/bg-17-2135-2020
Biogeosciences, 17, 2135–2148, 2020
https://doi.org/10.5194/bg-17-2135-2020

Research article 17 Apr 2020

Research article | 17 Apr 2020

Predominance of hexamethylated 6-methyl branched glycerol dialkyl glycerol tetraethers in the Mariana Trench: source and environmental implication

Wenjie Xiao et al.

Download

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (24 Feb 2020) by Silvio Pantoja
AR by Yunping Xu on behalf of the Authors (27 Feb 2020)  Author's response    Manuscript
ED: Publish subject to minor revisions (review by editor) (18 Mar 2020) by Silvio Pantoja
AR by Yunping Xu on behalf of the Authors (19 Mar 2020)  Author's response    Manuscript
ED: Publish as is (23 Mar 2020) by Silvio Pantoja
Download
Short summary
The hadal zone (6–11 km depth) is the least explored habitat on Earth. We studied microbial branched glycerol dialkyl glycerol tetraethers (brGDGTs) in the Challenger Deep, Mariana Trench. One unique feature is the strong predominance of 6-methyl brGDGT, which likely reflects an adaption of brGDGT-producing bacteria to alkaline seawater and low temperature. BrGDGTs, with elemental and isotopic data, suggest an autochthonous product for brGDGT. A new approach is proposed for brGDGT sourcing.
Altmetrics
Final-revised paper
Preprint