Earth & Environmental Sciences
nitrogen
81%
litter
79%
browsing
60%
boreal forest
54%
peatland
51%
nutrient
46%
fen
45%
rice
43%
ecosystem
40%
herbivore
39%
mesocosm
35%
soil
33%
soil nitrogen
32%
effect
29%
water table
29%
productivity
28%
nutrient availability
27%
plant community
26%
rate
26%
biomass
26%
forest ecosystem
26%
carbon
22%
coniferous tree
22%
decomposition
21%
population density
21%
ecosystem process
21%
national park
20%
phosphorus
20%
vegetation
20%
net primary production
20%
nutrient cycling
19%
canopy
19%
forage
17%
warming
15%
plant species
15%
seed production
15%
sulfate
15%
pine
14%
light effect
14%
sugar
14%
wetland
13%
oscillation
13%
soil fertility
13%
energetics
13%
bifurcation
13%
sulfide
13%
Agriculture & Biology
Alces alces
100%
nitrogen
60%
Zizania palustris
56%
wild rice
52%
bogs
51%
fens
50%
mineralization
49%
nutrients
44%
water table
44%
ecosystems
42%
browsing
33%
biogeochemical cycles
33%
hardwood forests
32%
boreal forests
32%
soil
30%
herbivores
26%
nutrient availability
24%
plant communities
23%
carbon
22%
conifers
21%
Acer saccharum subsp. saccharum
21%
deterioration
19%
foraging
19%
population density
19%
phosphorus
18%
forest ecosystems
17%
sulfides
17%
canopy
17%
climate change
17%
degradation
17%
nitrification
15%
net primary productivity
15%
biomass
15%
oscillation
15%
vegetation
15%
nitrogen cycle
15%
Castoridae
14%
wetlands
14%
Picea
13%
fen plants
13%
hardwood
13%
sulfates
12%
national parks
12%
soil temperature
12%
peatland plants
12%
global positioning systems
11%
energy
11%
growth models
11%
meadows
11%