Articles | Volume 23, issue 4
https://doi.org/10.5194/bg-23-1459-2026
© 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-23-1459-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
24 Feb 2026
Research article |
| 24 Feb 2026
| 24 Feb 2026
Enhanced methane cycling across the Laptev Sea signaled by time-integrated biomarkers of aerobic methane oxidation
Department of Environmental Science (ACES), Stockholm University, Stockholm, Sweden
Bolin Centre for Climate Research, Stockholm, Sweden
Birgit Wild
Department of Environmental Science (ACES), Stockholm University, Stockholm, Sweden
Bolin Centre for Climate Research, Stockholm, Sweden
Wei-Li Hong
Bolin Centre for Climate Research, Stockholm, Sweden
Department of Geological Sciences (IGV), Stockholm University, Stockholm, Sweden
Baltic Sea Centre, Stockholm University, Stockholm, Sweden
Henry Holmstrand
Department of Environmental Science (ACES), Stockholm University, Stockholm, Sweden
Francisco J. A. Nascimento
Baltic Sea Centre, Stockholm University, Stockholm, Sweden
Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
Stefano Bonaglia
Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden
Denis Kosmach
Laboratory for Arctic Research, V.I. Ilichov Pacific Oceanological Institute (POI), Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
Igor Semiletov
Laboratory for Arctic Research, V.I. Ilichov Pacific Oceanological Institute (POI), Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
Laboratory for Integrated Research of the Arctic System “land-shelf”, National Tomsk State Research University (TSU), Tomsk, Russia
Laboratory of Chemical and Biological Research, Sakhalin State University (SakhSU), Yuzhno-Sakhalinsk, Russia
Natalia Shakhova
Laboratory for Integrated Research of the Arctic System “land-shelf”, National Tomsk State Research University (TSU), Tomsk, Russia
Sadovsky Institute of Geosphere Dynamics (IGD) of the Russian Academy of Sciences, Moscow, Russia
Örjan Gustafsson
CORRESPONDING AUTHOR
Department of Environmental Science (ACES), Stockholm University, Stockholm, Sweden
Bolin Centre for Climate Research, Stockholm, Sweden
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Short summary
Thawing subsea permafrost in the East Siberian Arctic Seas releases methane, a potent greenhouse gas. Using molecular fossils in sediments, we traced aerobic methane oxidation as a proxy of enhanced methane cycling across the Laptev Sea, including in regions once thought low in emissions. This approach captures long-term patterns of methane cycling over years-decades , overcoming limits of short-term seawater measurements and highlights the importance of the Laptev Sea in Arctic methane cycling.
Thawing subsea permafrost in the East Siberian Arctic Seas releases methane, a potent greenhouse...
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