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Alnus (alder)
2
arctic
2
nitrogen cycling
2
nitrogen fixation
2
shrub encroachment
2
tundra
Botany
1
Plant Biology
1
Plant Biology not elsewhere classified
1
Plant Cell and Molecular Biology
1
Plant Developmental and Reproductive Biology
1
Plant Pathology
1
Plant Physiology
1
Plant Systematics and Taxonomy
1
Plant culture
1
SB1-1110
1
nutrient limitation
1
tundra greening
1
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