Contrasting composition of terrigenous organic matter in the dissolved, particulate and sedimentary organic carbon pools on the outer East Siberian Arctic Shelf

Salvadó, Joan A.; Tesi, Tommaso; Sundbom, Marcus; Karlsson, Emma; Kruså, Martin; Semiletov, Igor P.; Panova, Elena; Gustafsson, Örjan

doi:https://doi.org/10.5194/bg-13-6121-2016

Articles | Volume 13, issue 22

https://doi.org/10.5194/bg-13-6121-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Climate–carbon–cryosphere interactions in the...

https://doi.org/10.5194/bg-13-6121-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 22

Research article

|

14 Nov 2016

Research article |

| 14 Nov 2016

Contrasting composition of terrigenous organic matter in the dissolved, particulate and sedimentary organic carbon pools on the outer East Siberian Arctic Shelf

Joan A. Salvadó, Tommaso Tesi, Marcus Sundbom, Emma Karlsson, Martin Kruså, Igor P. Semiletov, Elena Panova, and Örjan Gustafsson

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Final revised paper (published on 14 Nov 2016)
Preprint (discussion started on 28 Jun 2016)

Interactive discussion

Status: closed

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

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RC1: 'Review of Salvado et al.,', Anonymous Referee #1, 02 Aug 2016
- AC2: 'Author responses to referee 1', Joan A. Salvadó, 18 Aug 2016
AC1: 'Author responses to referee 1', Joan A. Salvadó, 18 Aug 2016
RC2: 'Review of Salvadó et al.', Anonymous Referee #2, 21 Aug 2016
- AC3: 'Author responses to referee 2', Joan A. Salvadó, 30 Sep 2016
AC4: 'Author responses to reviewers and edits', Joan A. Salvadó, 30 Sep 2016
AC5: 'Manuscript reviewed', Joan A. Salvadó, 30 Sep 2016

Peer-review completion

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

ED: Publish subject to minor revisions (Editor review) (03 Oct 2016) by Francien Peterse

AR by Joan A. Salvadó on behalf of the Authors (09 Oct 2016) Author's response Manuscript

ED: Publish subject to technical corrections (15 Oct 2016) by Francien Peterse

Dear Joan Salvadó et al,

I have read your rebuttal and revised manuscript, and I am happy to inform you that your manuscript will be accepted for publication in Biogeosciences pending technical corrections, listed below:

Overall: check the manuscript on how biomarker ratios and properties for the different OC fractions are described. The OC pools are no independent entities, e.g. DOC itself can not be high (line 350), but its concentration is. Also, DOC does not have a preference for a specific source (line 556), but it can primarily contain a certain type of OC. Please make sure that all statements in your manuscript are technically correct.

Other minor corrections:
Line 188: add C after the degrees.
Line 206: Sediment cores were collected at water depths of 40 to 3120 m
line 345: ...more depleted values for samples with a high DOC concentration, and vice versa, reflects both....
Clarify the remainder of this sentence. What transport are you exactly referring to here? The order of words may be off?
line 350: use 'samples with high DOC concentration' instead of 'high DOC samples'.
line 449: ...both S/V and C/V ratios, but mostly C/V.
line 463: I would say 'contains a larger terrestrial component'
line 468: Further, P/V ratios show an opposite trend (opposite to what?) and are much higher (how high?) in the POC fraction than in the other carbon pools (Tables, 1, 2, 3).
line 472: start a new sentence at Nevertheless.
line 491: ...global studies on POC, ....
line 556: replace preferential by primarily.
line 563: as currently written, the authors are comparing permafrost OC with the total DOC pool. Is this correct? Or do they actually mean the permafrost derived OC in the DOC pool.

Thank you for submitting your work to Biogeosciences.

All the best,
Francien Peterse

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Short summary

Fluvial discharge and coastal erosion of the permafrost-dominated East Siberian Arctic delivers large quantities of terrigenous organic carbon (Terr-OC) to marine waters. We assessed its fate and composition in different marine pools with a suite of biomarkers. The dissolved organic carbon is transporting off-shelf “young” and fresh vascular plant material, while sedimentary and near-bottom particulate organic carbon preferentially carries old organic carbon released from thawing permafrost.