Earth & Environmental Sciences
caterpillar
100%
dry forest
85%
tropical forest
70%
sodium
52%
nutrient
45%
road
43%
ecosystem
41%
soil chemistry
25%
nitrogen
17%
element mobility
16%
effect
16%
habitat
16%
soil
16%
tropical ecosystem
15%
nutrient availability
13%
restoration
13%
biogeochemical cycle
13%
nectar
13%
ecosystem process
13%
temperate forest
12%
parent material
12%
heavy metal
12%
biome
12%
global change
11%
pollution
11%
seasonality
10%
butterfly
10%
phosphorus
8%
insect
8%
productivity
8%
growing season
8%
pollen
7%
automobile
7%
nickel
7%
rainfall
7%
zinc
7%
metal
6%
carbon
6%
salt
6%
animal
5%
winter
5%
pollutant
5%
Engineering & Materials Science
Roadsides
86%
Sodium
71%
Soils
27%
Salts
24%
Heavy metals
22%
Restoration
17%
Conservation
16%
Pollution
16%
Nitrogen
16%
Snow and ice removal
11%
Zinc
9%
Animals
8%
Nickel
8%
Lead
8%
Deterioration
7%
Social Sciences
innovation
90%
program planning
83%
innovation research
32%
planning practice
27%
learning
23%
grounded theory
16%
staff
14%
evaluation
10%
resources
7%
interview
7%