Biogeosciences
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Articles | Volume 23, issue 3
Articles | Volume 23, issue 3
https://doi.org/10.5194/bg-23-995-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-995-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 3
Research article
 | 
03 Feb 2026
Research article |  | 03 Feb 2026

Perturbation increases source-dependent organic matter degradation rates in estuarine sediments

Guangnan Wu, Klaas G. J. Nierop, Bingjie Yang, Stefan Schouten, Gert-Jan Reichart, and Peter Kraal

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Short summary
Estuaries store and process large amounts of carbon. In the Port of Rotterdam, we studied organic matter (OM) sources in sediments and showed how they influenced OM breakdown. We found that marine OM degraded faster than land-originated OM, and sediment perturbation could accelerate OM breakdown by introducing oxygen. Our findings highlight the impact of human disturbances on carbon storage in estuarine sediments, offering insights for the growing sediment reworking worldwide.
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