Redox regime shifts in microbially mediated biogeochemical cycles

Bush, T.; Butler, I. B.; Free, A.; Allen, R. J.

doi:https://doi.org/10.5194/bg-12-3713-2015

Articles | Volume 12, issue 12

https://doi.org/10.5194/bg-12-3713-2015

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

https://doi.org/10.5194/bg-12-3713-2015

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

Articles | Volume 12, issue 12

Research article

|

17 Jun 2015

Research article |

| 17 Jun 2015

Redox regime shifts in microbially mediated biogeochemical cycles

T. Bush, I. B. Butler, A. Free, and R. J. Allen

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Final revised paper (published on 17 Jun 2015)
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Preprint (discussion started on 17 Feb 2015)
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Interactive discussion

Status: closed

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

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RC C920: 'Review of Bush et al', Filip Meysman, 30 Mar 2015
- AC C1809: 'Response to Filip Meysman', Timothy Bush, 29 Apr 2015
RC C1293: 'Referee comment', christopher Algar, 17 Apr 2015
- AC C1811: 'Response to Christopher Algar', Timothy Bush, 29 Apr 2015

Peer-review completion

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

AR by Anna Wenzel on behalf of the Authors (29 May 2015) Author's response Manuscript

ED: Publish subject to technical corrections (01 Jun 2015) by Jack Middelburg

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Short summary

Despite their global importance, redox reactions mediated by microorganisms are often crudely represented in biogeochemical models. We show that including the dynamics of microbial growth in such a model can cause sudden shifts between redox states in response to an environmental change. We identify the conditions required for these redox regime shifts, and predict that they are likely in the modern day sulfur and nitrogen cycles, and potentially the iron cycle in the ancient ocean.