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


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

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
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.
Final-revised paper