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disturbance
organic matter
inorganic nutrients
27
populations
27
primary production
27
Alaska
24
tundra
24
biomass
23
productivity
16
nitrogen
15
phosphorus
13
annual variation
4
calcium
4
carbon
4
magnesium
4
potassium
4
exclosure
3
leaf area
3
exclosures
2
fertilize treatments
2
heath
2
moist acidic tundra
2
moist non-acidic tundra
2
nutrients
2
small mammal
2
Arctic tundra
1
Betula nana
1
carbon dioxide emission
1
climate controls
1
growth
1
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