A 1500-year multiproxy record of coastal hypoxia from the northern Baltic Sea indicates unprecedented deoxygenation over the 20th century

Jokinen, Sami A.; Virtasalo, Joonas J.; Jilbert, Tom; Kaiser, Jérôme; Dellwig, Olaf; Arz, Helge W.; Hänninen, Jari; Arppe, Laura; Collander, Miia; Saarinen, Timo

doi:https://doi.org/10.5194/bg-15-3975-2018

Articles | Volume 15, issue 13

https://doi.org/10.5194/bg-15-3975-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-15-3975-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 13

Research article

|

05 Jul 2018

Research article |

| 05 Jul 2018

A 1500-year multiproxy record of coastal hypoxia from the northern Baltic Sea indicates unprecedented deoxygenation over the 20th century

Sami A. Jokinen, Joonas J. Virtasalo, Tom Jilbert, Jérôme Kaiser, Olaf Dellwig, Helge W. Arz, Jari Hänninen, Laura Arppe, Miia Collander, and Timo Saarinen

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Preprint (discussion started on 16 Jan 2018)
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Interactive discussion

Status: closed

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

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RC1: 'Comments to: A 1500-year multiproxy record', Anonymous Referee #1, 21 Feb 2018
- AC1: 'Response to referee comments: Referee #1 and Referee#2', Sami Jokinen, 05 Apr 2018
RC2: 'Comments on 'A 1500-year multiproxy record of coastal hypoxia from the northern Baltic Sea indicates unprecedented deoxygenation over the 20th century'', Anonymous Referee #2, 15 Mar 2018
- AC2: 'Response to referee comments: Referee #1 and Referee#2', Sami Jokinen, 05 Apr 2018

Peer-review completion

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

ED: Reconsider after major revisions (10 Apr 2018) by S. Wajih A. Naqvi

AR by Sami Jokinen on behalf of the Authors (07 May 2018) Author's response Manuscript

ED: Referee Nomination & Report Request started (11 May 2018) by S. Wajih A. Naqvi

RR by Anonymous Referee #1 (25 May 2018)

ED: Publish subject to minor revisions (review by editor) (26 May 2018) by S. Wajih A. Naqvi

AR by Sami Jokinen on behalf of the Authors (01 Jun 2018) Author's response Manuscript

ED: Publish as is (06 Jun 2018) by S. Wajih A. Naqvi

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Short summary

Oxygen deficiency is a major environmental problem deteriorating seafloor habitats especially in the coastal ocean with large human impact. Here we apply a wide set of chemical and physical analyses to a 1500-year long sediment record and show that, although long-term climate variability has modulated seafloor oxygenation in the coastal northern Baltic Sea, the oxygen loss over the 20th century is unprecedentedly severe, emphasizing the need to reduce anthropogenic nutrient input in the future.