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Bald Eagles are top predators and often respond quickly to changes in their environment.
Four distinct herds of caribou are found in Central Alaska parklands.
Denali National Park and Preserve has the longest-running ecological study of migratory Golden Eagles in the world.
Central Alaska parklands contain about 20% of the world's population of Dall's sheep.
The upper Yukon River corridor is densely populated with Peregrine Falcons.
Although these small mammals are hardly visible, many larger species depend on them.
Moose are good indicators of long-term ecosystem change because they depend on large-scale, healthy habitats for food and cover.
Passerines provide key ecosystem functions, like seed dispersal.
Wolves are a keystone large mammal in Central Alaska parks. They depend on healthy populations of large ungulate prey.
Last updated: December 29, 2017
