Agriculture & Biology
constructed wetlands
91%
wetlands
63%
chemical oxygen demand
41%
Eichhornia crassipes
27%
total phosphorus
26%
water quality
21%
overland flow
17%
biofiltration
16%
pollution load
14%
biochemical oxygen demand
14%
total suspended solids
14%
environmental management
14%
aquatic plants
12%
surface water
12%
anthropogenic activities
11%
total nitrogen
11%
heavy metals
9%
pollution
9%
Mexico
8%
ecosystems
8%
winter
7%
biomass
6%
water
4%
sampling
3%
Earth & Environmental Sciences
constructed wetland
70%
wetland
50%
chemical oxygen demand
30%
harvest
29%
index
16%
phosphorus
15%
environmental restoration
15%
plan
14%
water hyacinth
14%
water quality
14%
biofiltration
13%
pollutant load
13%
aquatic plant
12%
biochemical oxygen demand
11%
removal
11%
environmental management
10%
human activity
8%
heavy metal
7%
surface water
7%
contamination
7%
pollution
7%
winter
6%
biomass
6%
nitrogen
6%
ecosystem
6%
evaluation
5%
modeling
4%
parameter
3%
water
3%
Engineering & Materials Science
Wetlands
100%
Chemical oxygen demand
46%
Water quality
26%
Phosphorus
26%
Biofiltration
18%
Environmental Restoration and Remediation
17%
Biochemical oxygen demand
16%
Environmental management
15%
Surface waters
14%
Heavy metals
14%
Ecosystems
11%
Contamination
10%
Pollution
10%
Nitrogen
10%
Biomass
9%
Recovery
7%
Chemistry
Chemical Oxygen Demand
76%
Phosphorus(.)
36%
Biochemical Oxygen Demand
30%
Ecosystem
26%
Surface Water
22%
Heavy Metal
18%
Environmental Pollutant
17%
Flow
14%
Nitrogen
13%
Amount
9%
Surface
6%