Aarde en milieuwetenschappen
eel
100%
fish
69%
river
60%
canal
53%
weir
43%
habitat restoration
39%
mortality
37%
migratory behavior
34%
Red List
32%
smolt
31%
estuary
30%
habitat
30%
station
27%
spawning
27%
physical conditions
26%
turbine
26%
silver
26%
bifurcation
26%
navigation
22%
hydrodynamics
22%
pumping
21%
pump
21%
glass
18%
microhabitat
18%
water depth
12%
embankment
12%
escapement
11%
evaluation
11%
flow velocity
11%
tide
10%
water temperature
10%
spawning ground
10%
sensor
10%
substrate
10%
speed
7%
erratic
7%
artificial substrate
7%
bypass
6%
oxic conditions
6%
long-term trend
6%
rehabilitation
5%
hydraulic structure
5%
travel
5%
electrofishing
5%
migration route
5%
radio
5%
wastewater treatment
5%
border
5%
life cycle
5%
penetration
5%
Landbouw & Biologie
Belgium
73%
Anguilla anguilla
66%
rivers
64%
eel
55%
freshwater fish
51%
estuaries
46%
diadromous fish
43%
Cottus gobio
40%
migratory behavior
35%
Rutilus rutilus
32%
Petromyzontiformes
30%
tiles
29%
lowlands
27%
pumps
22%
spawning
21%
glass
20%
tides
18%
habitats
14%
screws
12%
water temperature
11%
propellers
11%
canals (waterways)
10%
fyke nets
10%
radio transmitters
8%
river regulation
8%
fish
8%
water quality
8%
water
7%
extinction
7%
fish communities
7%
habitat conservation
7%
life cycle (organisms)
6%
wastewater treatment
6%
aerobic conditions
6%
travel
6%
managers
6%
trajectories
5%
