Agriculture & Biology
food enrichment
87%
meta-analysis
66%
nitrogen fixation
59%
biological control
49%
ecosystems
43%
dietary minerals
40%
tropical forests
40%
nutrients
34%
net primary productivity
25%
tundra
24%
environmental factors
24%
terrestrial ecosystems
24%
temperature
23%
boreal forests
23%
global change
23%
temperate forests
22%
biogeochemical cycles
21%
confidence interval
20%
nutrient availability
20%
savannas
19%
uncertainty
19%
grasslands
16%
rain
15%
phosphorus
14%
duration
12%
nitrogen
11%
Earth & Environmental Sciences
biological nitrogen fixation
90%
nutrient enrichment
70%
meta-analysis
64%
biome
46%
fixation
42%
nutrient
28%
environmental factor
24%
trace element
22%
nutrient availability
16%
temperature
16%
nutrient cycling
16%
temperate forest
16%
tundra
15%
savanna
15%
boreal forest
14%
terrestrial ecosystem
14%
global change
14%
confidence interval
14%
grassland
12%
warming
11%
phosphorus
10%
cold
10%
productivity
10%
rainfall
9%
nitrogen
8%
effect
6%
rate
4%
Chemical Compounds
Biological Nitrogen Fixation
100%
Nutrient
61%
Micronutrient
32%
Tundra
23%
Ecosystem
13%
Size Effect
13%
Phosphorus(.)
9%
Nitrogen
7%