Oxygen isotope exchange between water and carbon dioxide in soils is controlled by pH, nitrate and microbial biomass through links to carbonic anhydrase activity

Jones, Sam P.; Kaisermann, Aurore; Ogée, Jérôme; Wohl, Steven; Cheesman, Alexander W.; Cernusak, Lucas A.; Wingate, Lisa

doi:https://doi.org/10.5194/soil-7-145-2021

Articles | Volume 7, issue 1

https://doi.org/10.5194/soil-7-145-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/soil-7-145-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 7, issue 1

Original research article

| Highlight paper

|

02 Jun 2021

Original research article | Highlight paper |

| 02 Jun 2021

Oxygen isotope exchange between water and carbon dioxide in soils is controlled by pH, nitrate and microbial biomass through links to carbonic anhydrase activity

Sam P. Jones, Aurore Kaisermann, Jérôme Ogée, Steven Wohl, Alexander W. Cheesman, Lucas A. Cernusak, and Lisa Wingate

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Final revised paper (published on 02 Jun 2021)
Supplement to the final revised paper
Preprint (discussion started on 23 Jul 2020)
Supplement to the preprint

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Comments on Jones et al. (2020), manuscript submitted to SOIL', Anonymous Referee #1, 19 Oct 2020
- AC2: 'Reply on RC1', Sam P. Jones, 13 Feb 2021
SC1: 'Relevance of isotope exchange between soil water and CO2 to the budget of Δ17O in CO2', Gerbrand Koren, 28 Oct 2020
- AC1: 'Reply on SC1', Sam P. Jones, 13 Feb 2021
EC1: 'Comment on soil-2020-44', Steven Sleutel, 15 Jan 2021
- AC3: 'Reply on EC1', Sam P. Jones, 13 Feb 2021

Peer-review completion

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

ED: Publish subject to minor revisions (review by editor) (19 Feb 2021) by Steven Sleutel

AR by Sam P. Jones on behalf of the Authors (01 Mar 2021) Author's response Author's tracked changes Manuscript

ED: Publish as is (02 Mar 2021) by Steven Sleutel

ED: Publish as is (20 Mar 2021) by Johan Six (Executive editor)

AR by Sam P. Jones on behalf of the Authors (30 Mar 2021) Author's response Manuscript

Short summary

Understanding how the rate of oxygen isotope exchange between water and CO₂ varies in soils is key for using the oxygen isotope composition of atmospheric CO₂ as a tracer of biosphere CO₂ fluxes at large scales. Across 44 diverse soils the rate of this exchange responded to pH, nitrate and microbial biomass, which are hypothesised to alter activity of the enzyme carbonic anhydrase in soils. Using these three soil traits, it is now possible to predict how this isotopic exchange varies spatially.