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Savage River terrace photo pair
Photo Credits: Fred Dean (1976), Carl Roland (2005)
Ecoregion: Alaska Range Mountains
Change Type: Changing treelines
Changing treelinesAnimation is available
Description:
This pair of aerial photos show a terrace on the west side of the Savage R. south of the Park Road. The expansion of spruce trees across this open subalpine area appears to have been rapid in the 29 years separating these images. When viewing the two images, focus on the shape of the scalloped edge separating the lower terrace from the older upper terrace - the shape of this terrace edge is the same in the two photos and provides a useful reference for making comparisons. Note the large increase in spruce density (dark shapes) both above and below this terrace edge.