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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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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