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Development of a Premier River Fishery: The Big Silver Creek Fertilization Experiment, 1993-97 Final Project Report Wilson, Gregory
1999
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Abstract: Big Silver is a large coastal creek located 30 km north of Harrison Hot Springs, a two-hour drive east of Vancouver. Despite extensive habitat, low numbers of resident rainbow trout (<20 per ha; fork length >20 cm) inhabit the river, with migratory fish (mountain whitefish, Dolly Varden, cutthroat trout, and six species of salmon) limited to the lower 6 km by water falls. This oligotrophic river (specific conductance 13-18 S/cm, SRP<1/L, NO2+3<100 g/L) was fertilized with liquid ammonium polyphosphate (10-34-0% by weight N-P203-K20) to examine the feasibility of low-level inorganic fertilization as a method of increasing fish populations in rivers negatively influenced by past logging practices and/or overfishing. A pre-fertilization assessment was conducted in 1992-93 with fertilizer added during the summers of 1994-97 to meet a target instream concentration of 5P/L. Each summer, field measurements of water flow, temperature, nutrient concentrations, chlorophyll a accrual, benthic invertebrate biomass a
 
Wilson, Gregory, Ashley, Ken; Ewing, Sarah Mouldey; Slaney, Pat; Land, Robert. 1999. Development of a Premier River Fishery: The Big Silver Creek Fertilization Experiment, 1993-97 Final Project Report. Ministry of Fisheries. Fisheries Project Report. RD 69
 
Topic: Fish and Fish Habitats
Keywords: Big Silver Creek, Clear Creek, fertilization, management, habitat, salmonids, mountain whitefish, Dolly Varden, cutthroat trout, rainbow trout
ISSN:  Scientific Name: Salvelinus malma, Prosopium williamsoni, Oncorhynchus clarkii, Oncorhynchus mykiss
ISBN:  English Name: Cutthroat Trout, Dolly Varden, Rainbow Trout, Mountain Whitefish
Other Identifier: FPRRD69, FPR RD69, FPR RD 69
 
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