Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk

Gehlen, M.; Séférian, R.; Jones, D. O. B.; Roy, T.; Roth, R.; Barry, J.; Bopp, L.; Doney, S. C.; Dunne, J. P.; Heinze, C.; Joos, F.; Orr, J. C.; Resplandy, L.; Segschneider, J.; Tjiputra, J.

doi:https://doi.org/10.5194/bg-11-6955-2014

Articles | Volume 11, issue 23

https://doi.org/10.5194/bg-11-6955-2014

© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-11-6955-2014

© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 11, issue 23

Research article

|

11 Dec 2014

Research article |

| 11 Dec 2014

Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk

M. Gehlen, R. Séférian, D. O. B. Jones, T. Roy, R. Roth, J. Barry, L. Bopp, S. C. Doney, J. P. Dunne, C. Heinze, F. Joos, J. C. Orr, L. Resplandy, J. Segschneider, and J. Tjiputra

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Final revised paper (published on 11 Dec 2014)
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Preprint (discussion started on 11 Jun 2014)
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Interactive discussion

Status: closed

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

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- Supplement

RC C4483: 'review of bg-2014-260', Anonymous Referee #1, 19 Aug 2014
- AC C5728: 'reply to Anonymous Referee #1', Marion Gehlen, 08 Oct 2014
RC C5040: 'Review', Anonymous Referee #2, 10 Sep 2014
AC C5737: 'Reply to Anonymous Referee #2', Marion Gehlen, 08 Oct 2014

Peer-review completion

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

AR by Marion Gehlen on behalf of the Authors (28 Oct 2014) Author's response Manuscript

ED: Publish as is (03 Nov 2014) by Gerhard Herndl

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Short summary

This study evaluates potential impacts of pH reductions on North Atlantic deep-sea ecosystems in response to latest IPCC scenarios.Multi-model projections of pH changes over the seafloor are analysed with reference to a critical threshold based on palaeo-oceanographic studies, contemporary observations and model results. By 2100 under the most severe IPCC CO2 scenario, pH reductions occur over ~23% of deep-sea canyons and ~8% of seamounts – including seamounts proposed as marine protected areas.