Publication Date:
2022-05-25
Description:
Author Posting. © The Author(s), 2018. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Organic Geochemistry 125 (2018): 41-49, doi:10.1016/j.orggeochem.2018.08.004.
Description:
Deep-sea hydrothermal vents are unique ecosystems that may release chemically distinct
dissolved organic matter to the deep ocean. Here, we describe the composition and
concentrations of polar dissolved organic compounds observed in low and high temperature
hydrothermal vent fluids at 9°50’N on the East Pacific Rise. The concentration of dissolved
organic carbon was 46 μM in the low temperature hydrothermal fluids and 14 μM in the high
temperature hydrothermal fluids. In the low temperature vent fluids, quantifiable dissolved
organic compounds were dominated by water-soluble vitamins and amino acids. Derivatives of
benzoic acid and the organic sulfur compound 2,3-dihydroxypropane-1-sulfonate (DHPS) were
also present in low and high temperature hydrothermal fluids. The low temperature vent fluids
contain organic compounds that are central to biological processes, suggesting that they are a by-product of biological activity in the subseafloor. These compounds may fuel heterotrophic and
other metabolic processes at deep-sea hydrothermal vents and beyond.
Description:
This project was funded by a grant from WHOI’s Deep Ocean Exploration Institute and WHOI’s
Ocean Ridge Initiative (to EBK and SMS) and by NSF OCE-1154320 (to EBK and KL), OCE-
1136727 (to SMS and JSS), and OCE 1131095 (to SMS).
Keywords:
Metabolomics
;
Hydrothermal vents
;
Deep-sea
;
Dissolved organic matter
;
Vitamins
;
Atlantis (Ship : 1996-) Cruise AT26-10
;
Atlantis (Ship : 1996-) Cruise AT26-23
Repository Name:
Woods Hole Open Access Server
Type:
Preprint
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