Decomposition of organic carbon from thawing permafrost soils and the resulting release of carbon to the atmosphere are considered to represent a potentially critical global-scale feedback on climate change1,2. The accompanying heat production from microbial metabolism of organic material has been recognized as a potential positive-feedback mechanism that would enhance permafrost thawing and the release of carbon3,4. This internal heat production is poorly understood, however, and the strength of this effect remains unclear3. Here, we have quantified the variability of heat production in contrasting organic permafrost soils across Greenland and tested the hypothesis that these soils produce enough heat to reach a tipping point after which internal heat production can accelerate the decomposition processes. Results show that the impact of climate changes on natural organic soils can be accelerated by microbial heat production with crucial implications for the amounts of carbon being decomposed. The same is shown to be true for organic middens5 with the risk of losing unique evidence of early human presence in the Arctic.
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Schuur, E. A. G. et al. Vulnerability of permafrost carbon to climate change: Implications for the global carbon cycle. Bioscience 58, 701–714 (2008).
Schaefer, K. et al. The impact of the permafrost carbon feedback on global climate. Environ. Res. Lett. 9, 085003 (2014).
Khvorostyanov, D. V. et al. Vulnerability of permafrost carbon to global warming. Part I: model description and role of heat generated by organic matter decomposition. Tellus B 60, 250–264 (2008).
Heimann, M. & Reichstein, M. Terrestrial ecosystem carbon dynamics and climate feedbacks. Nature 451, 289–292 (2008).
Rasmussen, M. et al. Ancient human genome sequence of an extinct Palaeo-Eskimo. Nature 463, 757–762 (2010).
Tarnocai, C. et al. Soil organic carbon pools in the northern circumpolar permafrost region. Glob. Biogeochem. Cycle 23, GB2023 (2009).
Hugelius, G. Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps. Biogeosciences 11, 6573–6593 (2014).
Schadel, C. et al. Circumpolar assessment of permafrost C quality and its vulnerability over time using long-term incubation data. Glob. Change Biol. 20, 641–652 (2014).
Paré, M. & Bedard-Haughn, A. Surface soil organic matter qualities of three distinct canadian arctic sites. Arctic Antarct. Alpine Res. 45, 88–98 (2013).
Biasi, C. et al. Temperature-dependent shift from labile to recalcitrant carbon sources of arctic heterotrophs. Rapid Commun. Mass Spectrom. 19, 1401–1408 (2005).
Elberling, B. et al. Paleo-Eskimo kitchen midden preservation in permafrost under future climate conditions at Qajaa, West Greenland. J. Archaeol. Sci. 38, 1331–1339 (2011).
Elberling, B., Schippers, A. & Sand, W. Bacterial and chemical oxidation of pyritic mine tailings at low temperatures. J. Contam. Hydrol. 41, 225–238 (2000).
Hollesen, J., Elberling, B. & Jansson, P. E. Future active layer dynamics and carbon dioxide production from thawing permafrost layers in Northeast Greenland. Glob. Change Biol. 17, 911–926 (2011).
Matthiesen, H. A novel method to determine oxidation rates of heritage materials in vitro and in situ. Stud. Conserv. 52, 271–280 (2007).
Hamdi, S. et al. Synthesis analysis of the temperature sensitivity of soil respiration from laboratory studies in relation to incubation methods and soil conditions. Soil Biol. Biochem. 58, 115–126 (2013).
Elberling, B. et al. Long-term CO2 production following permafrost thaw. Nature Clim. Change 3, 890–894 (2013).
Jansson, P. E. & Karlberg, L. Coupled Heat and Mass Transfer Model for Soil-Plant-Atmosphere Systems Report No. 3087 (Royal Institute of Technology, Dept of Civil and Environmental Engineering, 2004).
IPCC Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) 1535 (Cambridge Univ. Press, 2013).
Rinke, A. & Dethloff, K. Simulated circum—Arctic climate changes by the end of the 21st century. Glob. Planet. Change 62, 173–186 (2008).
Kirschbaum, M. U. F. Soil respiration under prolonged soil warming: Are rate reductions caused by acclimation or substrate loss? Glob. Change Biol. 10, 1870–1877 (2004).
Eliasson, P. E. et al. The response of heterotrophic CO2 flux to soil warming. Glob. Change Biol. 11, 167–181 (2005).
Knorr, W., Prentice, I. C., House, J. I. & Holland, E. A. Long-term sensitivity of soil carbon turnover to warming. Nature 433, 298–301 (2005).
Knoblauch, C. et al. Predicting long-term carbon mineralization and trace gas production from thawing permafrost of Northeast Siberia. Glob. Change Biol. 19, 1160–1172 (2013).
Elberling, B. Seasonal trends of soil CO2 dynamics in a soil subject to freezing. J. Hydrol. 276, 159–175 (2003).
Hollesen, J. et al. The future preservation of a permanently frozen kitchen midden in Western Greenland. Conserv. Manage. Archaeol. Sites 14, 159–168 (2012).
Matthiesen, H. et al. Degradation of archaeological wood under freezing and thawing conditions—effects of permafrost and climate change. Archaeometry 56, 479–495 (2014).
Carstensen, L. S. & Jørgensen, B. V. Weather and Climate Data from Greenland 1958–2010-Dataset Available for Research and Educational Purposes DMI Technical Report 11–10 (Danish Meteorological Institute, 2011).
Christiansen, H. H. et al. Permafrost and periglacial geomorphology at Zackenberg. Adv. Ecol. Res. 40, 151–174 (2008).
Elberling, B. & Jakobsen, B. H. Soil solution pH measurements using in-line chambers with tension lysimeters. Can. J. Soil Sci. 80, 283–288 (2008).
Kersten, M. S. Thermal Properties of Soils Bull. Vol. 28, 26 (Univ. Minnesota Engineering Experiment Station, 1949).
We gratefully acknowledge the financial support from the Danish National Research Foundation (CENPERM DNRF100), from the Augustinus foundation (Northern Worlds) and the Carlsberg Foundation (J.H._2012_01_0286). We acknowledge the Zackenberg Basic programme for providing meteorological data and extend our gratitude to P. E. Jansson from the Royal Institute of Technology, Stockholm Sweden.
The authors declare no competing financial interests.
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Hollesen, J., Matthiesen, H., Møller, A. et al. Permafrost thawing in organic Arctic soils accelerated by ground heat production. Nature Clim Change 5, 574–578 (2015). https://doi.org/10.1038/nclimate2590
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