Ocean Science
Ocean Science
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Articles | Volume 21, issue 2
Articles | Volume 21, issue 2
https://doi.org/10.5194/os-21-679-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/os-21-679-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 2
Research article
 | Highlight paper
 | 
20 Mar 2025
Research article | Highlight paper |  | 20 Mar 2025

Decadal changes in phytoplankton functional composition in the Eastern English Channel: possible upcoming major effects of climate change

Zéline Hubert, Arnaud P. Louchart, Kévin Robache, Alexandre Epinoux, Clémentine Gallot, Vincent Cornille, Muriel Crouvoisier, Sébastien Monchy, and Luis Felipe Artigas

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-1933', Anonymous Referee #1, 20 Aug 2024
    • AC1: 'Reply on RC1', Zéline Hubert, 04 Nov 2024
  • RC2: 'Comment on egusphere-2024-1933', Anonymous Referee #2, 25 Sep 2024
    • AC2: 'Reply on RC2', Zéline Hubert, 04 Nov 2024

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Zéline Hubert on behalf of the Authors (04 Nov 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (18 Nov 2024) by Mehmet Ilicak
RR by Anonymous Referee #2 (12 Dec 2024)
ED: Publish subject to technical corrections (22 Jan 2025) by Anne Marie Treguier
AR by Zéline Hubert on behalf of the Authors (28 Jan 2025)  Author's response   Manuscript 
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Co-editor-in-chief
This is an original study on a on a coastal ecosystem, combining environmental data with data on phytoplankton functional groups. Such a time series on flow cytometry in combination with environmental data at high temporal resolution over multiple years is relatively rare and can give a detailed view into the variability of the phytoplankton community over the last decade. This is the first pluri-annual study of the whole size-range of the phytoplankton community characterized by one unique method.
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Short summary
This study provides the first assessment of decadal changes in the whole phytoplankton community, addressed by flow cytometry, in the highly productive waters of the Strait of Dover. A significant surface seawater temperature increase of 1°C, associated with an important change in the nutrient concentration and balance, has triggered a change in the phytoplankton communities, characterized by a higher total abundance and an increasing proportion of the smallest cells (picroeukaryotes and picocyanobacteria).
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Coastal marine infrastructure in support of monitoring, science,...