Eco Region Assessment 17. The ecoregion comprises the Pelly, Cassiar, northern Omineca, northern Rocky, and Muskwa ranges and the Liard Basin and Plateau. Glaciation is observed in the higher elevations. Climate remains fairly similar across the ecoregion, despite the ecoregion's relatively large size. Permafrost of low ice content is sporadically distributed throughout the ecoregion, and occurs more often on northern slopes.
Fire represents a fairly frequent disturbance regime.