What question did this study set out to answer?

The aim was to explore how phytoplankton blooms and photodegradation affect the composition of colored and fluorescent DOM in the sea-surface microlayer.

June 5, 2026BiogeosciencesOpen Access

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

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Authors

CTClaudia ThölenCarl von Ossietzky Universität Oldenburg JWJochen WollschlägerCarl von Ossietzky Universität Oldenburg MNMichael G. NovakHelmholtz-Zentrum Hereon

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Randomized trial examines photodegradation effects on DOM composition in marine environments, indicating significant bloom influences.

Key Points

The aim was to explore how phytoplankton blooms and photodegradation affect the composition of colored and fluorescent DOM in the sea-surface microlayer.
Conducted a month-long mesocosm study at the Institute for Chemistry and Biology of the Marine Environment, Germany.
Analyzed daily samples from the sea-surface microlayer and underlying water using spectral fluorometric and photometric methods.
Investigated FDOM composition changes through statistical analysis (PERMANOVA).
Protein-like FDOM components increased in both layers during bloom progression.
Humic-like FDOM components decreased throughout the study.
Photodegradation was identified as the dominant sink of organic matter over microbial activity.

Cite This Study

Thölen et al. (2026) studied this question.

synapsesocial.com/papers/6a22698b763171746d54816d https://doi.org/10.5194/bg-23-3697-2026

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

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Cite This Study

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

Discussion

Member takes

Implication

Key Points

Cite This Study

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