Biophysical settings are regionally important habitat types that share similar vegetation and biophysical site characteristics including permafrost characteristics, surficial deposit, disturbance and succession. Together, these (floodplain forest and shrub, lowland woody wetland, upland mesic spruce-hardwood forest, upland mesic spruce forest, upland low and tall shrub, alpine and Arctic tussock tundra, and alpine dwarf shrub tundra) biophysical settings represent the majority of the terrestrial landscape within the interior Alaska geography.