Validation of carbon isotope fractionation in algal lipids as a pCO2 proxy using a natural CO2 seep (Shikine Island, Japan)

Witkowski, Caitlyn R.; Agostini, Sylvain; Harvey, Ben P.; van der Meer, Marcel T. J.; Sinninghe Damsté, Jaap S.; Schouten, Stefan

doi:https://doi.org/10.5194/bg-16-4451-2019

Articles | Volume 16, issue 22

https://doi.org/10.5194/bg-16-4451-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-16-4451-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 22

Research article

|

25 Nov 2019

Research article |

| 25 Nov 2019

Validation of carbon isotope fractionation in algal lipids as a pCO₂ proxy using a natural CO₂ seep (Shikine Island, Japan)

Caitlyn R. Witkowski, Sylvain Agostini, Ben P. Harvey, Marcel T. J. van der Meer, Jaap S. Sinninghe Damsté, and Stefan Schouten

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Final revised paper (published on 25 Nov 2019)
Supplement to the final revised paper
Preprint (discussion started on 03 May 2019)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'comments on 'Validation of carbon isotope fractionation in algal lipids as a PCO2 proxy using a natural CO2 seep (Shikine Island, Japan)' by Witkoski et al.', Anonymous Referee #1, 28 May 2019
- SC3: 'Response to comments by Reviewer 1', Cailtyn Witkowski, 06 Jul 2019
- AC1: 'Response', S. Schouten, 13 Sep 2019
SC1: 'Validation of carbon isotope fractionation in algal lipids as a PCO2...Some historical perspective.', John Jasper, 11 Jun 2019
- SC2: 'Response to John Jasper', Cailtyn Witkowski, 28 Jun 2019
- AC2: 'Response', S. Schouten, 13 Sep 2019
RC2: 'Comments on "Validation of carbon isotope fractionation in algal lipids as a PCO2 proxy..." by Witkowski et al.', Anonymous Referee #2, 06 Jul 2019
- SC4: 'Response to Reviewer 2', Cailtyn Witkowski, 11 Jul 2019
  - RC3: 'Reply to Witkowski et al.', Anonymous Referee #2, 12 Jul 2019
    - SC5: 'Second response to Reviewer 2', Cailtyn Witkowski, 15 Jul 2019
    - AC4: 'Response', S. Schouten, 13 Sep 2019
- AC3: 'Response', S. Schouten, 13 Sep 2019
RC4: 'Validation of carbon isotope fractionation in algal lipids as a PCO2 proxy using a natural CO2 seep (Shikine Island, Japan)', Anonymous Referee #3, 14 Aug 2019
- SC6: 'Response to Reviewer 3 (RC4)', Cailtyn Witkowski, 16 Aug 2019
- AC5: 'Response', S. Schouten, 13 Sep 2019

Peer-review completion

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

ED: Publish subject to minor revisions (review by editor) (17 Sep 2019) by Clare Woulds

AR by S. Schouten on behalf of the Authors (25 Sep 2019) Author's response Manuscript

ED: Publish as is (15 Oct 2019) by Clare Woulds

AR by S. Schouten on behalf of the Authors (16 Oct 2019) Author's response Manuscript

Short summary

Carbon dioxide concentrations (pCO₂) in the atmosphere play an integral role in Earth system dynamics, especially climate. Past climates help us understand future ones, but reconstructing pCO₂ over the geologic record remains a challenge. This research demonstrates new approaches for exploring past pCO₂ via the carbon isotope fractionation in general algal lipids, which we test over a high CO₂ gradient from a naturally occurring CO₂ seep.