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Articles | Volume 23, issue 11
Articles | Volume 23, issue 11
https://doi.org/10.5194/bg-23-3697-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/bg-23-3697-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 11
Research article
 | 
03 Jun 2026
Research article |  | 03 Jun 2026

Colored and fluorescent DOM in the sea-surface microlayer: response to a phytoplankton bloom and photodegradation in a mesocosm study

Claudia Thölen, Jochen Wollschläger, Michael G. Novak, Rüdiger Röttgers, and Oliver Zielinski

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Latest update: 03 Jun 2026
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Short summary
In a mesocosm study, the investigation of colored and fluorescent dissolved organic matter provided information on its transformation, enrichment, and exchange processes within the sea-surface microlayer and the underlying water. Photodegradation was suggested as the main sink, exceeding microbial alteration, and indicating that light and biological processes, such as the induced phytoplankton bloom, jointly shaped organic matter composition under strong vertical mixing.
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Biogeochemical processes and Air–sea exchange in the...
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