List of frequency studies for Gasterosteus aculeatus
Locality Year
from - to
Sex Gear Frequency type
Bell Common, Epping Forest Pond, UK 1989 - 1989 unsexed/mixed  other  absolute number measured 
Lake Frongoch, UK Engld Wal 1977 - 1978 unsexed/mixed  seines  absolute number measured 
River Weaver, UK Engld Wal 1981 - 1982 unsexed/mixed  seines  absolute number measured 
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