Dissolved organic carbon compounds in deep-sea hydrothermal vent fluids from the East Pacific Rise at 9°50′N
Sievert, Stefan M.
Sylva, Sean P.
Seewald, Jeffrey S.
Kujawinski, Elizabeth B.
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KeywordMetabolomics; Hydrothermal vents; Deep-sea; Dissolved organic matter; Vitamins; Atlantis (Ship : 1996-) Cruise AT26-10; Atlantis (Ship : 1996-) Cruise AT26-23
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.
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.
Suggested CitationPreprint: Longnecker, Krista, Sievert, Stefan M., Sylva, Sean P., Seewald, Jeffrey S., Kujawinski, Elizabeth B., "Dissolved organic carbon compounds in deep-sea hydrothermal vent fluids from the East Pacific Rise at 9°50′N", 2018-08, https://doi.org/10.1016/j.orggeochem.2018.08.004, https://hdl.handle.net/1912/10723
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