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Limnology
5
Ecology
4
England
4
Fisheries
3
Salvelinus alpinus
3
Ennerdale Water
2
Fish culture
2
Fishery survey
2
Freshwater fish
2
Lake Windermere
2
Lakes
2
Length frequency
2
Rivers
2
Sex ratio
2
Spawning
2
Abundance
1
Acidification
1
Angling
1
Animal populations
1
Aquaculture
1
Arctic char
1
Biologically active substances of hydrobionts
1
Catch statistics
1
Distribution records
1
Ecosystem management
1
Esox lucius
1
Genetics
1
Historical account
1
Hydroelectric power plants
1
King crab
1
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