Nitrogen attenuation, dilution and recycling in the intertidal hyporheic zone of a subtropical estuary

Lamontagne, Sébastien; Cosme, Frédéric; Minard, Andrew; Holloway, Andrew

doi:https://doi.org/10.5194/hess-22-4083-2018

Articles | Volume 22, issue 7

https://doi.org/10.5194/hess-22-4083-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-22-4083-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 7

Research article

|

30 Jul 2018

Research article |

| 30 Jul 2018

Nitrogen attenuation, dilution and recycling in the intertidal hyporheic zone of a subtropical estuary

Sébastien Lamontagne, Frédéric Cosme, Andrew Minard, and Andrew Holloway

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Final revised paper (published on 30 Jul 2018)
Preprint (discussion started on 16 Mar 2018)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review of Lamontagne et al', Anonymous Referee #1, 16 Apr 2018
- AC1: 'Reply to reviewer #1', Sebastien Lamontagne, 28 May 2018
RC2: 'Referee report', Anonymous Referee #2, 18 Apr 2018
- AC2: 'Reply Reviewer #2', Sebastien Lamontagne, 28 May 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to revisions (further review by editor and referees) (04 Jun 2018) by Brian Berkowitz

AR by Sebastien Lamontagne on behalf of the Authors (22 Jun 2018) Author's response

ED: Referee Nomination & Report Request started (30 Jun 2018) by Brian Berkowitz

ED: Publish as is (17 Jul 2018) by Brian Berkowitz

AR by Sebastien Lamontagne on behalf of the Authors (18 Jul 2018)

Short summary

The dual nitrate isotope technique is one of the most commonly used approaches to study the origin and fate of N introduced in aquifers. In this study, we first demonstrate a large attenuation of groundwater N at a former industrial site, especially at the interface between surface and groundwater. We also provide evidence for a switch in the oxygen isotopic signature of groundwater due to this extensive N attenuation. This could be used to better quantify N attenuation processes in aquifers.