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Arctic
17
treeline
17
white spruce
Alaska
15
snow
15
boreal forest advance
14
foliar nutrients
14
forest tundra ecotone
14
invasion
13
Picea glauca
4
Brooks Range
2
boreal
2
13C
1
15N
1
ALPINE TUNDRA
1
ARCTIC TUNDRA
1
BOREAL FOREST/TIAGA
1
Picea mariana
1
adult growth rate
1
air temperature
1
basal area
1
cone counts
1
dendrochronology
1
foliar N
1
foliar P
1
glauca
1
mariana
1
sea ice retreat
1
seedling growth rate
1
seedling to sapling recruitment
1
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