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An unfished population of juvenile steelhead (rainbow) trout (Salmo gairdneri) in Karen Creek, a small coastal stream tributary to the Coquihalla River, was studied from July 29 to September 28, 1976. Population size, growth rate, biomass, production, and spatial distribution were investigated for study areas in the stream. The mean biomass density of rainbow trout (RBT) was 6.5 g/m2. The distribution of biomass is unbalanced towards (2+) and (3+) fish. Growth of rainbow trout in Karen Creek is consistent with the slow growth documented on other similar streams of cold, infertile waters. Karen Creek is a poor nursery stream and this is reflected in estimates of low production by juvenile fish. Total production is estimated to be 88 kg/ha/yr and is judged comparable to streams in the Salmon River drainage (Kelsey Bay). Limited suitable habitat for age (+) and (1+) fish currently limits the smolt contribution to the Coquihalla River system. Suggestions to improve juvenile production from Karen Creek are detail
Ptolemy, R.A.. 1976. Production and Stream Carrying Capacity Relative to Enhancement Opportunities in Karen Creek (Coquihalla River System), 1976. Ministry of Recreation and Conservation
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