The pH dependency of the boron isotopic composition of diatom opal (<i>Thalassiosira weissflogii</i>)

Donald, Hannah K.; Foster, Gavin L.; Fröhberg, Nico; Swann, George E. A.; Poulton, Alex J.; Moore, C. Mark; Humphreys, Matthew P.

doi:https://doi.org/10.5194/bg-17-2825-2020

Articles | Volume 17, issue 10

https://doi.org/10.5194/bg-17-2825-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-17-2825-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 10

Research article

|

27 May 2020

Research article |

| 27 May 2020

The pH dependency of the boron isotopic composition of diatom opal (Thalassiosira weissflogii)

Hannah K. Donald, Gavin L. Foster, Nico Fröhberg, George E. A. Swann, Alex J. Poulton, C. Mark Moore, and Matthew P. Humphreys

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Final revised paper (published on 27 May 2020)
Preprint (discussion started on 23 May 2019)
Supplement to the preprint

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Referee Comment', Jan Fietzke, 05 Sep 2019
- AC1: 'Reply to comments from Reviewer 1', Gavin L. Foster, 12 Feb 2020
RC2: 'Review for “The pH dependency of the boron isotopic composition of diatom opal” by Donald et al.', Joji Uchikawa, 11 Dec 2019
- AC2: 'Response to comments by RC2', Gavin L. Foster, 12 Feb 2020

Peer-review completion

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

ED: Publish subject to minor revisions (review by editor) (24 Feb 2020) by Aldo Shemesh

AR by Gavin L. Foster on behalf of the Authors (25 Mar 2020) Author's response Manuscript

ED: Publish as is (21 Apr 2020) by Aldo Shemesh

AR by Gavin L. Foster on behalf of the Authors (24 Apr 2020) Manuscript

Short summary

The boron isotope pH proxy is increasingly being used to reconstruct ocean pH in the past. Here we detail a novel analytical methodology for measuring the boron isotopic composition (δ¹¹B) of diatom opal and apply this to the study of the diatom Thalassiosira weissflogii grown in culture over a range of pH. To our knowledge this is the first study of its kind and provides unique insights into the way in which diatoms incorporate boron and their potential as archives of palaeoclimate records.