Articles | Volume 18, issue 15
Biogeosciences, 18, 4535–4548, 2021
https://doi.org/10.5194/bg-18-4535-2021
Biogeosciences, 18, 4535–4548, 2021
https://doi.org/10.5194/bg-18-4535-2021

Research article 04 Aug 2021

Research article | 04 Aug 2021

How are oxygen budgets influenced by dissolved iron and growth of oxygenic phototrophs in an iron-rich spring system? Initial results from the Espan Spring in Fürth, Germany

Inga Köhler et al.

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on bg-2021-68', Anonymous Referee #1, 02 Apr 2021
    • AC1: 'Reply on RC1', Inga Köhler, 12 May 2021
  • RC2: 'Comment on bg-2021-68', Anonymous Referee #2, 14 Apr 2021
    • AC2: 'Reply on RC2', Inga Köhler, 12 May 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (19 May 2021) by Tina Treude
AR by Inga Köhler on behalf of the Authors (22 May 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish subject to minor revisions (review by editor) (26 May 2021) by Tina Treude
AR by Inga Köhler on behalf of the Authors (03 Jun 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (04 Jun 2021) by Tina Treude
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Short summary
We investigated how high Fe(II) levels influence the O2 budget of a circum-neutral Fe(II)-rich spring and if a combined study of dissolved O (DO) and its isotopic composition can help assess this effect. We showed that dissolved Fe(II) can exert strong effects on the δ18ODO even though a constant supply of atmospheric O2 occurs. In the presence of photosynthesis, direct effects of Fe oxidation become masked. Critical Fe(II) concentrations indirectly control the DO by enhancing photosynthesis.
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