Patterned ground along the Noatak River, Noatak National Preserve

Patterned ground along the Noatak River, Noatak National Preserve.  Dominant ecotypes include Riverine Loamy Wet Circumacidic Wet Sedge Meadow, Riverine Loamy Moist Circumacidic Birch-Willow Low Shrub, Riverine Gravelly Moist Circumalkaline Barrens, and Riverine Gravelly Dry Alkaline Dryas Dwarf Shrub.