Articles | Volume 19, issue 10
https://doi.org/10.5194/bg-19-2683-2022
https://doi.org/10.5194/bg-19-2683-2022
Research article
 | 
31 May 2022
Research article |  | 31 May 2022

Sources of nitrous oxide and the fate of mineral nitrogen in subarctic permafrost peat soils

Jenie Gil, Maija E. Marushchak, Tobias Rütting, Elizabeth M. Baggs, Tibisay Pérez, Alexander Novakovskiy, Tatiana Trubnikova, Dmitry Kaverin, Pertti J. Martikainen, and Christina Biasi

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Cited articles

Abbott, B. W. and Jones, J. B.: Permafrost collapse alters soil carbon stocks, respiration, CH4, and N2O in upland tundra, Glob. Change Biol., 21, 4570–4587, https://doi.org/10.1111/gcb.13069, 2015. 
Alves, R. J. E., Wanek, W., Zappe, A., Richter, A., Svenning, M. M., Schleper, C., and Urich, T.: Nitrification rates in Arctic soils are associated with functionally distinct populations of ammonia-oxidizing archaea, ISME J., 7, 1620–1631, 2013. 
Ayres, E., van der Wal, R., Sommerkorn, M., and Bardgett, R. D.: Direct uptake of soil nitrogen by mosses, Biol. Letters, 2, 286–288, https://doi.org/10.1098/rsbl.2006.0455, 2006. 
Baggs, E. M.: Soil microbial sources of nitrous oxide: recent advances in knowledge, emerging challenges and future direction, Curr. Opin. Env. Sust., 3, 321–327, https://doi.org/10.1016/j.cosust.2011.08.011, 2011. 
Baggs, E. M., Richter, M., Cadisch, G., and Hartwig, U. A.: Denitrification in grass swards is increased under elevated atmospheric CO2, Soil Biol. Biochem., 35, 729–732, https://doi.org/10.1016/s0038-0717(03)00083-x, 2003. 
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Short summary
N2O emissions from permafrost soils represent up to 11.6 % of total N2O emissions from natural soils, and their contribution to the global N2O budget will likely increase due to climate change. A better understanding of N2O production from permafrost soil is needed to evaluate the role of arctic ecosystems in the global N2O budget. By studying microbial N2O production processes in N2O hotspots in permafrost peatlands, we identified denitrification as the dominant source of N2O in these surfaces.
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