Previous photo pair1958 - 2001: Glaciated Uplands near Teklanika17/60Next photo pair
spruce expansion photo pair
Photo Credits: Leslie A. Viereck (1958), Leslie A. Viereck (2001)
Ecoregion: Alaska Range Mountains
Change Type: Changing treelines
Changing treelinesAnimation is available
Not far from the Teklanika Campground, this photo pair shows an increase in spruce density at lower areas where spruce previously occurred, and an expansion of spruce at higher elevations thereby expanding treeline to those elevations (visible in the upper right of photos).