Articles | Volume 20, issue 7
Research article
 | Highlight paper
12 Apr 2023
Research article | Highlight paper |  | 12 Apr 2023

Particulate organic matter in the Lena River and its delta: from the permafrost catchment to the Arctic Ocean

Olga Ogneva, Gesine Mollenhauer, Bennet Juhls, Tina Sanders, Juri Palmtag, Matthias Fuchs, Hendrik Grotheer, Paul J. Mann, and Jens Strauss


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on bg-2022-183', Anonymous Referee #1, 22 Sep 2022
  • RC2: 'Comment on bg-2022-183', Anonymous Referee #2, 11 Oct 2022
  • RC3: 'Comment on bg-2022-183', Anonymous Referee #3, 14 Oct 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Reconsider after major revisions (11 Dec 2022) by Ny Riavo G. Voarintsoa
AR by Olga Ogneva on behalf of the Authors (21 Dec 2022)  Author's response   Author's tracked changes   Manuscript 
ED: Reconsider after major revisions (12 Jan 2023) by Ny Riavo G. Voarintsoa
AR by Olga Ogneva on behalf of the Authors (15 Feb 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to technical corrections (10 Mar 2023) by Ny Riavo G. Voarintsoa
AR by Olga Ogneva on behalf of the Authors (17 Mar 2023)  Author's response   Manuscript 
While the source and fate of particulate organic matter (POM) are better understood in riverine, deltaic, and lake systems, this paper provides an insight on POM dynamics in a permafrost catchment, while combining a multiple proxy approach (particulate organic carbon - POC, total suspended matter - TSM, carbon isotopes - d13C and d14C - in POC). Combined with mixing models, these findings help decipher the potential sources for authochtonous and allochtnonous organic matters, and hence provide important insights in the role of permafrost for the organic carbon mobilization in the Arctic region.
Short summary
Arctic warming accelerates permafrost thaw and release of terrestrial organic matter (OM) via rivers to the Arctic Ocean. We compared particulate organic carbon (POC), total suspended matter, and C isotopes (δ13C and Δ14C of POC) in the Lena delta and Lena River along a ~1600 km transect. We show that the Lena delta, as an interface between the Lena River and the Arctic Ocean, plays a crucial role in determining the qualitative and quantitative composition of OM discharged into the Arctic Ocean.
Final-revised paper