Recommendations for a Marking, Tagging, and Recovery Program ...

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History of “Constant Fractional Marking” (CFM) Idea 1978-1980: Hankin’s work on Klamath chinook. Problem: Low ad+CWT marking rates + variability in marking rates ruled out estimation of the proportion of hatchery fish in the run. Can’t assess hatchery performance; Can’t determine status of wild fish.
History of “Constant Fractional Marking” (CFM) Idea (cont.) Hankin’s initial thought: “Mark all the hatchery fish!” CDFG Response: “No way – too expensive!” CFM = How to mark less than 100% of hatchery fish and still allow accurate estimation of the proportion of hatchery fish.
Page 1: Recommendations for a marking, tagg
Page 5 and 6: Implementations of CFM 1979-1982 B
Page 7 and 8: What you can get from a CFM program
Page 9 and 10: Sacramento System Complications La
Page 11 and 12: Assumptions Non-selective fisherie
Page 13 and 14: Estimating hatchery catches Ocean
Page 15 and 16: Estimating wild escapement In-rive
Page 17 and 18: Estimating wild ocean catch - simpl
Page 19 and 20: CFM Sim (Allan Hicks - MS Thesis w/
Page 21 and 22: Design of Simulation Experiments (C
Page 23 and 24: Performance measures Relative Mean
Page 25 and 26: Results Hatchery-specific productio
Page 27 and 28: Results Watershed-specific natural
Page 29 and 30: Results Watershed-specific natural
Page 31 and 32: Conclusions Hatchery fish as surrog
Page 33 and 34: Conclusions Escapement estimation
Page 35: Primary Conclusions Use CFM rate o

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