Articles | Volume 23, issue 10
https://doi.org/10.5194/bg-23-3637-2026
© 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-23-3637-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
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28 May 2026
Research article | Highlight paper |
| 28 May 2026
| 28 May 2026
Shoreline exposure controls teal carbon accumulation in boreal lakes
Ana Lúcia Lindroth Dauner
CORRESPONDING AUTHOR
Environmental Geochemistry Group, Department of Geosciences and Geography, University of Helsinki, Gustaf Hällströmin Katu 2, Helsinki, 00560, Finland
Max O. A. Kankainen
Environmental Geochemistry Group, Department of Geosciences and Geography, University of Helsinki, Gustaf Hällströmin Katu 2, Helsinki, 00560, Finland
Sakari Väkevä
Finnish Environment Institute (Syke), Latokartanonkaari 11, Helsinki, 00790, Finland
Eero Asmala
Geological Survey of Finland (GTK), Vuorimiehentie 5, P.O. Box 96, Espoo, 02151, Finland
Marko Järvinen
Finnish Environment Institute (Syke), Latokartanonkaari 11, Helsinki, 00790, Finland
Karoliina Koho
Geological Survey of Finland (GTK), Vuorimiehentie 5, P.O. Box 96, Espoo, 02151, Finland
Tom Jilbert
Environmental Geochemistry Group, Department of Geosciences and Geography, University of Helsinki, Gustaf Hällströmin Katu 2, Helsinki, 00560, Finland
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Editorial statement
This publication presents measurements of sedimentary organic carbon stocks in the vegetated shorelines of boreal lakes, so called ‘teal carbon’ environments. The three large Finland lakes in this study show a large variability in teal carbon storage, with grain size as the most significant parameter explaining the variability. The amount of sedimentary organic carbon storage is related further to abiotic and biotic controls. Teal carbon is an important component of overall lacustrine carbon storage, and the process-based controls elucidated in this study may provide insight into carbon storage in other boreal lakes as well.
This publication presents measurements of sedimentary organic carbon stocks in the vegetated...
Short summary
Aquatic vegetated ecosystems are important for global carbon storage, but freshwater shorelines remain understudied. We found that the sedimentary organic carbon (SOC) stocks ranged from 0 to 40.8 kg m−2, with a large spatial variability. Large SOC stocks were found in sheltered areas, with the predominance of fine-grained sediments. In exposed areas, vegetation might also impact SOC accumulation. Accounting for shoreline exposure is crucial for improving regional carbon budget estimates.
Aquatic vegetated ecosystems are important for global carbon storage, but freshwater shorelines...
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