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Alnus (alder)
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Botany
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Plant Biology
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Plant Biology not elsewhere classified
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Plant Cell and Molecular Biology
Plant Developmental and Reproductive Biology
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Plant Pathology
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Plant Physiology
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Plant Systematics and Taxonomy
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arctic
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nitrogen cycling
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nitrogen fixation
nutrient limitation
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shrub encroachment
1
tundra
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tundra greening
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