Articles | Volume 18, issue 11
Biogeosciences, 18, 3421–3444, 2021
https://doi.org/10.5194/bg-18-3421-2021
Biogeosciences, 18, 3421–3444, 2021
https://doi.org/10.5194/bg-18-3421-2021

Research article 10 Jun 2021

Research article | 10 Jun 2021

Seasonality of nitrogen sources, cycling, and loading in a New England river discerned from nitrate isotope ratios

Veronica R. Rollinson et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (27 Jan 2021) by Jack Middelburg
AR by Veronica Rollinson on behalf of the Authors (10 Feb 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish subject to technical corrections (11 Feb 2021) by Jack Middelburg
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Short summary
We measured nutrients and the naturally occurring nitrogen (N) and oxygen (O) stable isotope ratios of nitrate discharged from a New England river over an annual cycle, to monitor N loading and identify dominant sources from the watershed. We uncovered a seasonality to loading and sources of N from the watershed. Seasonality in the nitrate isotope ratios also informed on N cycling, conforming to theoretical expectations of riverine nutrient cycling.
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