Articles | Volume 24, issue 4
Research article
30 Apr 2020
Research article |  | 30 Apr 2020

Isotopic and chromatographic fingerprinting of the sources of dissolved organic carbon in a shallow coastal aquifer

Karina T. Meredith, Andy Baker, Martin S. Andersen, Denis M. O'Carroll, Helen Rutlidge, Liza K. McDonough, Phetdala Oudone, Eliza Bryan, and Nur Syahiza Zainuddin


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (24 Jan 2020) by Nandita Basu
AR by Karina Meredith on behalf of the Authors (20 Feb 2020)  Author's response    Manuscript
ED: Publish as is (25 Mar 2020) by Nandita Basu
AR by Karina Meredith on behalf of the Authors (01 Apr 2020)  Author's response    Manuscript
Short summary
Dissolved organic carbon within groundwater and processes controlling it remain largely unknown. The average groundwater concentration at this coastal site was 5 times higher than the global median, doubling with depth, but with no change in chromatographic character. The lack of oxygen limited the rate of organic matter processing, leading to enhanced preservation. Changes in coastal hydrology could lead to the flux of unreacted organic carbon.