Skeena Sockeye In-river Run Reconstruction Analysis Model and Analysis Results for 1982-2009

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Summary

Run reconstruction analyses have previously been used to estimate Conservation Unit (CU)-specific harvest rates for in-river fisheries targeting Fraser sockeye and Chinook salmon. This analysis uses the basic structure of the Fraser in-river run reconstruction models to develop a similar model for the Skeena watershed. The model provides a systematic process for combining information on catch, escapement, river entry run timing, escapement run timing, stock-specific migration rates through fisheries, and fishery timing. The results from these run reconstruction analyses, combined with the marine harvest rates estimated annually using the Northern Boundary Sockeye Run Reconstruction (NBSRR) model, allow improved estimation of stock status and can also be used towards evaluating alternative fisheries management options for Skeena sockeye CUs.