tundra, litter, permafrost, carbon, arctic, climate warming, decomposition, respiration, soil, Organic matter, Stocks, Terrestrial environments, Resource availability, Positive feedback, Leaves, Taiga & tundra, Microorganisms, Soil layers, Mineralization, Dynamics, Polar environments, Control surfaces, Shrubs, Leaf litter, Global warming, Incubation, Priming...