Agriculture & Biology
ammonium
19%
bacteria
11%
gene expression
12%
genes
28%
habitats
11%
imports
19%
marine environment
48%
nitrogen
12%
nitrogen fixation
21%
nitrogen oxides
28%
nitrogen-fixing bacteria
100%
nitrogen-fixing cyanobacteria
29%
nitrogenase
92%
oceans
21%
organisms
11%
oxygen
28%
plankton
91%
primary productivity
24%
surface water
22%
Earth & Environmental Sciences
ammonium
17%
bacterium
13%
budget
17%
cyanobacterium
19%
detection
12%
distribution
7%
estuarine environment
25%
evaluation
9%
fixation
80%
gene
63%
habitat
12%
import
20%
marine environment
35%
nitrogen
12%
nitrogen oxides
21%
ocean
11%
organism
14%
oxygen
26%
particle
10%
plankton
78%
productivity
14%
regulation
58%
surface water
13%
water
25%