Autotrophic fixation of geogenic CO<sub>2</sub> by microorganisms contributes to soil organic matter formation and alters isotope signatures in a wetland mofette

Nowak, M. E.; Beulig, F.; von Fischer, J.; Muhr, J.; Küsel, K.; Trumbore, S. E.

doi:https://doi.org/10.5194/bg-12-7169-2015

Articles | Volume 12, issue 23

https://doi.org/10.5194/bg-12-7169-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-12-7169-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 12, issue 23

Research article

|

08 Dec 2015

Research article |

| 08 Dec 2015

Autotrophic fixation of geogenic CO₂ by microorganisms contributes to soil organic matter formation and alters isotope signatures in a wetland mofette

M. E. Nowak, F. Beulig, J. von Fischer, J. Muhr, K. Küsel, and S. E. Trumbore

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Final revised paper (published on 08 Dec 2015)
Preprint (discussion started on 04 Sep 2015)

Interactive discussion

Status: closed

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

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RC C5812: 'soil biogesciences', Anonymous Referee #1, 28 Sep 2015
- AC C6793: 'Reply to comments of referee#1', Martin Nowak, 20 Oct 2015
RC C6384: 'Interactive comment on “Autotrophic fixation of geogenic CO 2 by microorganisms contributes to soil organic matter formation and alters isotope signatures in a wetland mofette” by M. E. Nowak et al.', Anonymous Referee #2, 09 Oct 2015
- AC C6874: 'Answers to comments of referee #2', Martin Nowak, 22 Oct 2015

Peer-review completion

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

ED: Publish subject to minor revisions (Editor review) (03 Nov 2015) by Ivonne Trebs

AR by Martin Nowak on behalf of the Authors (17 Nov 2015) Author's response Manuscript

ED: Publish as is (20 Nov 2015) by Ivonne Trebs

AR by Martin Nowak on behalf of the Authors (24 Nov 2015)

Short summary

Microorganisms have been recognized as an important source of soil organic matter (SOM). Autotrophic microorganisms utilize CO2 instead of organic carbon. Microbial CO2 fixation is accompanied with high 13C isotope discrimination. Because autotrophs are abundant in soils, they might be a significant factor influencing 13C signatures of SOM. Thus, it is important to asses the importance of autotrophs for C isotope signatures in soils, in order to use isotopes as a tracer for soil C dynamics.

Autotrophic fixation of geogenic CO2 by microorganisms contributes to soil organic matter formation and alters isotope signatures in a wetland mofette

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Interactive discussion

Peer-review completion

Autotrophic fixation of geogenic CO₂ by microorganisms contributes to soil organic matter formation and alters isotope signatures in a wetland mofette