Jorien E. Vonk

TL;DR: In this paper, the authors find that current evidence suggests a gradual and prolonged release of greenhouse gas emissions in a warming climate and present a research strategy with which to target poorly understood aspects of permafrost carbon dynamics.

TL;DR: In this article, the effects of permafrost thaw on lakes and streams in the Arctic were explored, where the authors explored the effect of both thermokarst (thawing and collapse of ice-rich permaculture) and deepening of the active layer (the surface soil layer that thaws and refreezes each year).

TL;DR: Inverse modelling of the dual-carbon isotope composition of organic carbon accumulating in ESAS surface sediments, using Monte Carlo simulations to account for uncertainties, suggests that 44 ± 10 teragrams of old carbon is activated annually from Ice Complex permafrost, an order of magnitude more than has been suggested by previous studies.

TL;DR: In this paper, the authors showed that ancient dissolved organic carbon (DOC, >21,000 (14)C) was mobilized in stream waters draining Yedoma outcrops, and this DOC is highly biolabile: 34 +/- 0.8% was lost during a 14 day incubation under dark, oxygenated conditions at ambient river temperatures.

TL;DR: Permafrost acts as a significant and preferentially degradable source of bioavailable carbon in Arctic freshwaters, which is likely to increase as permafrost thaw intensifies causing positive climate feedbacks in response to on-going climate change.