Articles | Volume 19, issue 17
https://doi.org/10.5194/bg-19-3959-2022
https://doi.org/10.5194/bg-19-3959-2022
Research article
 | 
31 Aug 2022
Research article |  | 31 Aug 2022

The dominant role of sunlight in degrading winter dissolved organic matter from a thermokarst lake in a subarctic peatland

Flora Mazoyer, Isabelle Laurion, and Milla Rautio

Download

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on bg-2022-26', Anonymous Referee #1, 23 Feb 2022
    • AC1: 'Reply on RC1', Flora Mazoyer, 01 May 2022
  • RC2: 'Comment on bg-2022-26', Anonymous Referee #2, 17 Mar 2022
    • AC2: 'Reply on RC2', Flora Mazoyer, 01 May 2022
  • CC1: 'Comment on bg-2022-26', Liudmila Shirokova, 21 Mar 2022
    • AC3: 'Reply on CC1', Flora Mazoyer, 01 May 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Reconsider after major revisions (09 May 2022) by Helge Niemann
AR by Flora Mazoyer on behalf of the Authors (10 May 2022)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (11 May 2022) by Helge Niemann
RR by Anonymous Referee #1 (01 Jun 2022)
RR by Brent Dalzell (13 Jun 2022)
ED: Publish subject to minor revisions (review by editor) (20 Jun 2022) by Helge Niemann
AR by Flora Mazoyer on behalf of the Authors (29 Jun 2022)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (13 Jul 2022) by Helge Niemann
AR by Flora Mazoyer on behalf of the Authors (05 Aug 2022)  Manuscript 
Download
Short summary
Dissolved organic matter collected at the end of winter from a peatland thermokarst lake was highly transformed and degraded by sunlight, leading to bacterial stimulation and CO2 production, but a fraction was also potentially lost by photoflocculation. Over 18 days, 18 % of the incubated dissolved organic matter was lost under sunlight, while dark bacterial degradation was negligible. Sunlight could have a marked effect on carbon cycling in organic-rich thermokarst lakes after ice-off.
Altmetrics
Final-revised paper
Preprint