Salmon Watersheds Program

Area 3, 4, 5 Pink and Chum Exploitation Rate Model

Summary

This report summarizes the methods and results of the model used to estimate annual exploitation rates for pink and chum salmon returning to DFO statistical Areas 3, 4, and 5 (Nass and Skeena watersheds in northern British Columbia). To reconstruct exploitation rates, the model described in this document uses a data from the BC Hail database, the Pink Salmon Run Reconstruction analysis from Gazey and English 2000, and the chum model from English et al. 2016. These data sources are used to generate effort-harvest rate relationships and derive exploitation rates for pink and chum salmon over the period from 1954-2017. The report also provides documentation of the R code for the current Pink & Chum Exploitation Rate Model.