Articles | Volume 22, issue 6
https://doi.org/10.5194/bg-22-1711-2025
© Author(s) 2025. 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-22-1711-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Apr 2025
Research article |
| 01 Apr 2025
| 01 Apr 2025
Exploring microscale heterogeneity as a driver of biogeochemical transformations and gas transport in peat
Institute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
Department of Agricultural Sciences, Faculty of Agricultural Sciences, University of Helsinki, Helsinki, Finland
Department of Environmental and Biological Sciences, Faculty of Science, Forestry and Technology, University of Eastern Finland, Kuopio, Finland
Petri Kiuru
School of Forest Sciences, Faculty of Science, Forestry and Technology, University of Eastern Finland, Joensuu, Finland
Marjo Palviainen
Department of Forest Sciences, University of Helsinki, Helsinki, Finland
Maarit Raivonen
Institute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
Markku Koskinen
Department of Agricultural Sciences, Faculty of Agricultural Sciences, University of Helsinki, Helsinki, Finland
Institute for Atmospheric and Earth System Research (INAR)/Forest Sciences, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
Mari Pihlatie
Department of Agricultural Sciences, Faculty of Agricultural Sciences, University of Helsinki, Helsinki, Finland
Institute for Atmospheric and Earth System Research (INAR)/Forest Sciences, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
Annamari Laurén
School of Forest Sciences, Faculty of Science, Forestry and Technology, University of Eastern Finland, Joensuu, Finland
Department of Forest Sciences, University of Helsinki, Helsinki, Finland
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Manuscript not accepted for further review
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Short summary
We present an assay to illuminate heterogeneity in biogeochemical transformations within peat samples. For this, we injected isotope-labeled acetate into peat cores and monitored the release of label-derived gases, which we compared to microtomography images. The fraction of label converted to CO2 and the rapidness of this conversion were linked to injection depth and air-filled porosity.
We present an assay to illuminate heterogeneity in biogeochemical transformations within peat...
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