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15 N labelling
Above-belowground linkages
10
Arctic tundra
10
Cryptogams
10
Microbial N biomass
Plant nutrient uptake
Urine
8
Grazing intensity
7
Nutrient cycling
7
Plant-herbivore interactions
7
grazing intensity
3
urine
2
Life sciences
1
art
1
envir
1
medicine and health care
1
nutrient cycling
1
plant-herbivore interactions
1
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