Biogeosciences
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Articles | Volume 23, issue 18
Articles | Volume 23, issue 18
https://doi.org/10.5194/bg-23-6639-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-6639-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 18
Research article
 | 
21 Sep 2026
Research article |  | 21 Sep 2026

Plant belowground traits indicate increased plant-mediated methane transport along a peatland permafrost thaw gradient

Tiia M. Määttä, Samantha H. Bosman, Jeffrey P. Chanton, Patrick Crill, Suzanne B. Hodgkins, Jalisha Theanutti Kallingal, Rachel M. Wilson, Ruth Varner, and Avni Malhotra

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Short summary
Permafrost thaw can lead to vegetation shifts and higher methane (CH4) emissions in peatlands. However, plant belowground controls of these emissions are uncertain. We investigated how plant roots and rhizomes contribute to CH4 emissions along a peatland permafrost thaw gradient. We found that low herbaceous plant root tissue density and high rhizome surface area were associated with higher CH4 emissions. This indicated increased plant-mediated CH4 transport with thaw.
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