Isotopic evidence for alteration of nitrous oxide emissions and producing pathways' contribution under nitrifying conditions

Humbert, Guillaume; Sébilo, Mathieu; Fiat, Justine; Lang, Longqi; Filali, Ahlem; Vaury, Véronique; Spérandio, Mathieu; Laverman, Anniet M.

doi:https://doi.org/10.5194/bg-17-979-2020

Articles | Volume 17, issue 4

https://doi.org/10.5194/bg-17-979-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-17-979-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 4

Research article

|

24 Feb 2020

Research article |

| 24 Feb 2020

Isotopic evidence for alteration of nitrous oxide emissions and producing pathways' contribution under nitrifying conditions

Guillaume Humbert, Mathieu Sébilo, Justine Fiat, Longqi Lang, Ahlem Filali, Véronique Vaury, Mathieu Spérandio, and Anniet M. Laverman

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Final revised paper (published on 24 Feb 2020)
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Preprint (discussion started on 19 Jul 2019)
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Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review of Humbert et al. (bg-2019-244)', Anonymous Referee #1, 27 Aug 2019
- AC1: 'Response to RC1', Guillaume Humbert, 23 Sep 2019
RC2: 'Review for Humbert et al. 2019', Anonymous Referee #2, 03 Sep 2019
- AC2: 'Response to RC2', Guillaume Humbert, 23 Sep 2019

Peer-review completion

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

ED: Reconsider after major revisions (05 Oct 2019) by Perran Cook

AR by Guillaume Humbert on behalf of the Authors (31 Oct 2019) Author's response Manuscript

ED: Referee Nomination & Report Request started (07 Nov 2019) by Perran Cook

RR by Anonymous Referee #2 (20 Dec 2019)

ED: Publish as is (20 Jan 2020) by Perran Cook

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Short summary

Mitigating emissions of the greenhouse gas N₂O requires understanding of the relative contribution of its producing processes in response to environmental variables. We show, using isotopic analysis, that N₂O emissions from a nitrifying system were sensitive to oxygenation, temperature and NH₄⁺ concentrations with nitrite reduction being the main N₂O source. Temperature appears to be the main control on N₂O production, due to its dissimilar effects on ammonium and nitrite oxidizing activities.