Articles | Volume 19, issue 4
https://doi.org/10.5194/bg-19-1225-2022
https://doi.org/10.5194/bg-19-1225-2022
Research article
 | 
28 Feb 2022
Research article |  | 28 Feb 2022

Ignoring carbon emissions from thermokarst ponds results in overestimation of tundra net carbon uptake

Lutz Beckebanze, Zoé Rehder, David Holl, Christian Wille, Charlotta Mirbach, and Lars Kutzbach

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Cited articles

Abnizova, A., Siemens, J., Langer, M., and Boike, J.: Small ponds with major impact: The relevance of ponds and lakes in permafrost landscapes to carbon dioxide emissions, Global Biogeochem. Cy., 26, GB2041, https://doi.org/10.1029/2011gb004237, 2012. a, b, c, d, e, f, g, h, i, j, k, l, m
Andresen, C. G. and Lougheed, V. L.: Disappearing Arctic tundra ponds: Fine-scale analysis of surface hydrology in drained thaw lake basins over a 65 year period (1948–2013), J. Geophys. Res.-Biogeo., 120, 466–479, https://doi.org/10.1002/2014jg002778, 2015. a
Andresen, C. G., Lara, M. J., Tweedie, C. E., and Lougheed, V. L.: Rising plant-mediated methane emissions from arctic wetlands, Glob. Change Biol., 120.3, 466–479, https://doi.org/10.1111/gcb.13469, 2017. a
Beckebanze, L., Rehder, Z., Norman, R., Holl, D., Mirbach, C., Wille, C., and Kutzbach, L.: Eddy-covariance and meteorological measurements of large pond and polygonal tundra in Lena River Delta, Siberia (summer 2019), PANGAEA [data set], https://doi.org/10.1594/PANGAEA.937594, 2021. a
Bogard, M. J., del Giorgio, P. A., Boutet, L., Chaves, M. C. G., Prairie, Y. T., Merante, A., and Derry, A. M.: Oxic water column methanogenesis as a major component of aquatic CH4 fluxes, Nat. Commun., 5, 5350, https://doi.org/10.1038/ncomms6350, 2014. a
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Short summary
Arctic permafrost landscapes feature many water bodies. In contrast to the terrestrial parts of the landscape, the water bodies release carbon to the atmosphere. We compare carbon dioxide and methane fluxes from small water bodies to the surrounding tundra and find not accounting for the carbon dioxide emissions leads to an overestimation of the tundra uptake by 11 %. Consequently, changes in hydrology and water body distribution may substantially impact the overall carbon budget of the Arctic.
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