Articles | Volume 13, issue 8
Biogeosciences, 13, 2291–2303, 2016
https://doi.org/10.5194/bg-13-2291-2016
Biogeosciences, 13, 2291–2303, 2016
https://doi.org/10.5194/bg-13-2291-2016

Research article 20 Apr 2016

Research article | 20 Apr 2016

The effect of a permafrost disturbance on growing-season carbon-dioxide fluxes in a high Arctic tundra ecosystem

Alison E. Cassidy et al.

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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.
ACIA: Arctic Climate Impact Assessment and Arctic Monitoring and Assessment Programme and Program for the Conservation of Arctic Flora and Fauna and International Arctic Science Committee, Cambridge University Press, New York, USA, 2005.
Anisimov, O. A.: Potential feedback of thawing permafrost to the global climate system through methane emission, Environ. Res. Lett., 2, 045016, https://doi.org/10.1088/1748-9326/2/4/045016, 2007.
Beamish, A., Neil, A., Wagner, I., and Scott, N. A.: Short-term impacts of active layer detachments on carbon exchange in a High Arctic ecosystem, Cape Bounty, Nunavut, Canada, Pol. Biol., 37, 1459–1468, 2014.
Bell, T.: The last glaciation and sea level history of Fosheim Peninsula, Ellesmere Island, Canadian High Arctic, Can. J. Earth Sci., 33, 1075–1086, 1996.
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Short summary
We measured the impacts of permafrost disturbances, namely retrogressive thaw slumps, on the carbon balance in a high Arctic tundra ecosystem. We used a novel approach (dual eddy covariance sampling strategy) to measure continuous CO2 exchange from undisturbed and disturbed tundra simultaneously. We further validate eddy covariance fluxes with portable chamber measurements. Our findings show that permafrost disturbances change the carbon balance from being a net sink to a net source.
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