Biogeosciences
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Articles | Volume 23, issue 14
Articles | Volume 23, issue 14
https://doi.org/10.5194/bg-23-5255-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-5255-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 14
Research article
 | 
31 Jul 2026
Research article |  | 31 Jul 2026

Biogeochemical controls on carbonate dynamics driven by methane and freshwater inputs in shallow sediments of a brackish continental shelf sea

Katarzyna Łukawska-Matuszewska, Grzegorz Rzepa, Aleksandra Brodecka-Goluch, Andrzej Borkowski, Beata Gebus-Czupyt, Artur Błachowski, Maciej Manecki, Jarosław Kania, Maciej Dwornik, and Magdalena Radzikowska

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Latest update: 31 Jul 2026
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Short summary
Sedimentary processes play a crucial role in regulating the marine carbon cycle. This includes the critical roles of methanogenesis and anaerobic methane oxidation, especially when combined with freshening of pore water, which enhances the generation of dissolved inorganic carbon and promotes carbonate precipitation in sediments; additionally, methane-bearing sediments are a more significant source of dissolved inorganic carbon to overlying water than those lacking significant methanogenesis.
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