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


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) (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
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.