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tundra
vegetation
animals
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aspen
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atmospheric deposition
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biogeochemistry
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black spruce
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browsing
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burn severity
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caribou
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climate change
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forests
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greenhouse gases
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herbivory
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human dimensions
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moose
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mosses
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nitrogen oxides
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nutrient cycling
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paper birch
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permafrost
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regeneration
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small mammals
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snow
1
snowshoe hares
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