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Race across the tundra: White spruce vs. snowshoe hare
As some tree species shift northward, it's the tale of the spruce vs. the hare in northern Alaska.
Credit: NPS
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These Alaska spruce trees and deciduous shrubs show evidence of heavy browsing by snowshoe hares.
Credit: K. Kielland
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Spruce seedling at the NSF Bonanza Creek LTER site that's been severely browsed by snowshoe hares.
Credit: J. Olnes
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A researcher examines white spruce trees killed by hare-browsing in northern Alaska.
Credit: K. Kielland
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Snowshoe hares dig for mineral-laden soils to eat; they use soils to deactivate tannins in forage.
Credit: K. Kielland
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Snowshoe hares also browse on willow trees, here in early spring along Alaska's Dietrich River.
Credit: K. Kielland
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