Agriculture & Biology
Ohio River
100%
Missouri River
96%
Mississippi River
85%
hydrology
82%
habitats
35%
rivers
32%
dams (hydrology)
32%
channelization
11%
United States Geological Survey
11%
air sampling
9%
research methods
8%
fish communities
7%
fish
3%
testing
2%
Earth & Environmental Sciences
hydrology
51%
habitat
37%
index
31%
river
29%
littoral
15%
dam
15%
habitat quality
11%
physical alteration
8%
channelization
6%
revetment
6%
air sampling
6%
fish
6%
research method
5%
impoundment
5%
geological survey
5%
transect
4%
attribute
3%
substrate
3%
indicator
3%
calculation
2%
test
1%
Business & Economics
Habitat
63%
Dams
27%
Fish
10%
Redundancy
6%
Sampling
5%
Substrate
5%
Weighting
4%
Research Methods
4%
Residents
4%
Air
4%
Integrated
2%
United States of America
2%