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ammonia diffusion method
1
ammonium uptake length
1
chloroform fumigation
1
coniferous forest
1
fresh-waters
1
gross primary production
1
headwater
1
leaf decomposition
1
length
1
n-15
1
nitrate uptake
1
nitrification
1
nitrogen cycling
1
oxygen change technique
respiration
1
soil-nitrogen
1
stable isotope
1
stream
1
stream ecosystem
1
tracer addition
1
tundra river
1
woodland stream
1
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