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Vulnerability to Fishing with a Regional Perspective?
I am doing a stage based (juvenile, mature, trophy) version of the fisheries for channel catfish. I am also incorporating movement/migration information among 4 different regions. Based on the recreational fishing and commercial fishing regulations that exist in my study area the vulnerability to fishing for each stage would actually be different across regions. Does anyone know how to specify vulnerability to fishing so it's regionally specific? See attached image for population_params values. Right now the model assumes vulnerability to fishing is constant across stages and regions (all 1's). Ideally, I would like to have a vulnerability to fishing column for each region (e.g., 1, 2, 3, 4). Thanks