Topic
Fisheries
Rivers
Limnology
37
England
34
Salmo salar
34
Salmo trutta
28
Ecology
26
River fisheries
25
Salmon fisheries
24
Fishery surveys
19
Stock assessment
11
Distribution
10
Lune Catchment
10
Stocking density
10
Stream flow
8
Water quality
8
Catch statistics
7
Fry
7
Fish counters
6
Freshwater fish
6
Management
5
Migratory species
5
Electric fishing
4
Population number
4
Tracking
4
Coarse fish
3
Fish populations
3
Juveniles
3
Population structure
3
River Dart
3
South West
3
Tagging
3
UK
3
Wyre Catchment
3
licensing
3
Conservation
2
Dissolved oxygen
2
Droughts
2
Environmental Monitoring
2
Fish catch statistics
2
Fish eggs
2
Fisheries management
2
Fishery regulations
2
Gravel
2
Length frequency
2
Migrations
2
Ouse Catchment
2
Population dynamics
2
Redds
2
Ribble Catchment
2
more ...