Agriculture & Biology
acetylene reduction
35%
Arctic region
28%
assays
14%
autumn
21%
Betula
29%
climate
21%
climate change
69%
cryptogams
42%
ethylene production
28%
global warming
28%
growing season
44%
legumes
22%
lichens
27%
methodology
7%
mosses and liverworts
26%
nitrogen
15%
nitrogen fixation
84%
phosphorus
20%
plastics
21%
prediction
18%
seasonal variation
71%
summer
54%
temperature
11%
terrestrial ecosystems
34%
vascular plants
56%
vegetation
20%
winter
18%
Earth & Environmental Sciences
acetylene
8%
assay
6%
autumn
6%
climate
8%
climate change
48%
cold
5%
cryptogam
11%
effect
19%
ethylene
7%
field experiment
6%
fixation
80%
growing season
13%
in situ
4%
lichen
8%
litter
21%
method
1%
moss
7%
nitrogen
4%
nitrogen fixation
100%
phosphorus
5%
plastic
5%
prediction
3%
seasonal variation
67%
summer
12%
terrestrial ecosystem
7%
vascular plant
16%
vegetation
4%
warming
29%
winter
4%