[This dataset is embargoed until January 2, 2026]. This dataset contains information on the soil particle size distribution and the 12 & 13 CO2 fluxes from varying permafrost soil types and horizons sampled from the North West Territories and Yukon, Canada in 2019 and 2020. The soils were used in a continuous labelling experiment with live Agrostis capillaris growing into them with corresponding root-free controls. The recorded flux data is used to derive the rhizosphere priming effect in the tested soils. Full details about this dataset can be found at https://doi.org/10.5285/a80c688c-0a91-41ce-a8e9-89479a38a566

This dataset contains information on the carbon and nitrogen content of varying permafrost soil types and layers sampled from the North West Territories and Yukon, Canada in 2019 and 2020. Samples analysed include turbels, orthels and histels from drained lakes, non-lake (alluvial and till) and yedoma deposits including active layer and both organic and mineral permafrost (where appropriate). Full details about this dataset can be found at https://doi.org/10.5285/54e9d93f-bacb-41e4-a66a-0cdcbdd02101