canada
(
68
)
environmental aspects
(
68
)
freshwater
(
59
)
alberta
(
41
)
environmental impact
(
29
)
environmental protection
(
28
)
aspect de l'environnement
(
24
)
water quality
(
24
)
land use
(
22
)
pipelines
(
22
)
oil and gas industry
(
20
)
fishes
(
19
)
habitat
(
19
)
utilisation du sol
(
19
)
athabasca r
(
18
)
irrigation
(
17
)
poissons
(
17
)
hydrology
(
16
)
mine tailings
(
16
)
resource management
(
15
)
tailings dams
(
15
)
baseline studies
(
14
)
british columbia
(
14
)
waste disposal
(
14
)
wastes
(
13
)
environmental impacts
(
12
)
mines and mineral resources
(
12
)
monitoring
(
12
)
muskeg r
(
12
)
groundwater
(
11
)