Earth & Environmental Sciences
soil organic matter
65%
mercury
55%
watershed
50%
oxidation
44%
spatial variation
42%
fish
41%
ecosystem
40%
organic carbon
39%
soil horizon
39%
organic soil
35%
metal
20%
chemical element
19%
long-term change
18%
effect
16%
regression analysis
14%
soil
14%
principal component analysis
14%
disturbance
11%
organic matter
11%
Engineering & Materials Science
Biological materials
90%
Oxidation
60%
Soils
53%
Watersheds
49%
Organic carbon
44%
Fish
42%
Chemical elements
14%
Metals
12%
Regression analysis
10%
Principal component analysis
9%
Fires
8%
Chemical Compounds
Soil Organic Matter
100%
Ecosystem
81%
Soil
58%
Organic Carbon
37%
Oxidation Reaction
30%
Percent Reduction
13%
Fire
12%
Organic Matter
12%
Metal
10%
Chemical Element
8%