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nitrogen
4
carbon
3
charcoal
3
density
3
Arctic tundra
2
bog
2
bulk density
2
diatoms
2
fires
2
inorganic nutrients
2
macrofossil
2
moat
2
soil moisture
2
soil samples
2
Zooplankton
1
fibric
1
humic
1
lake and pond
1
mesic
1
nitrogen mineralization
1
phosphorus
1
plant available nutrients
1
soil horizon
1
zooplankton density
1
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