The silent carbon pool: Cryoturbic enriched organic matter in Canadian High Arctic semi-deserts

Positron‐emitting radiotracers spatially resolve unexpected biogeochemical relationships linked with methane oxidation in Arctic soils

“…An additional soil used for probing the uptake of [ 11 C]CH 4 by a sterilized soil matrix was collected from a non‐diapiric frost boil on dolomitic parent material. The dominant soils at the Alexandra Fiord Dome site are Regosolic Turbic Cryosol or Turbic Cryosols have very high (25%–39% by mass) contents of coarse fragments (>2 mm), which preclude maintaining soil structure during collection and transport from field‐to‐lab (Canadian Agricultural Services Coordinating Committee, National Research Council Canada, & Canada, 1998; Food & Agriculture Organization of the United Nations, 2014; Muller et al, 2022). After collection, soil samples were frozen and stored at −20°C until use.…”