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.
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.
the Creative Commons Attribution 4.0 License.
Research article
| 
31 Jul 2026
Research article |
| 31 Jul 2026
| 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
CORRESPONDING AUTHOR
Faculty of Oceanography and Geography, University of Gdańsk, al. Marszałka J. Piłsudskiego 46, 81-378 Gdynia, Poland
Grzegorz Rzepa
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Krakow, al. Mickiewicza 30, 30-059 Kraków, Poland
Aleksandra Brodecka-Goluch
Faculty of Oceanography and Geography, University of Gdańsk, al. Marszałka J. Piłsudskiego 46, 81-378 Gdynia, Poland
Andrzej Borkowski
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Krakow, al. Mickiewicza 30, 30-059 Kraków, Poland
Beata Gebus-Czupyt
Institute of Geological Sciences Polish Academy of Sciences, Twarda Str. 51/55, 00-818 Warsaw, Poland
Artur Błachowski
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Krakow, al. Mickiewicza 30, 30-059 Kraków, Poland
Maciej Manecki
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Krakow, al. Mickiewicza 30, 30-059 Kraków, Poland
Jarosław Kania
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Krakow, al. Mickiewicza 30, 30-059 Kraków, Poland
Maciej Dwornik
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Krakow, al. Mickiewicza 30, 30-059 Kraków, Poland
Magdalena Radzikowska
Institute of Geological Sciences Polish Academy of Sciences, Twarda Str. 51/55, 00-818 Warsaw, Poland
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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.
Sedimentary processes play a crucial role in regulating the marine carbon cycle. This includes...
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