First of all, we investigate the status of salmon populations in a given river on the basis of thresholds calculated to ensure that yearly reproduction rates make the species sustainable. We calculate a river's productivity every year. This allows us to categorize how it fits into the various health classifications that will determine whether certain fisheries need to be opened or closed.
It's an interesting model to use because depending on the status of the population, only traditional fishing or sport fishing might be allowed. If a population is in very good health, there could even be commercial fishing.
The collaboration with first nations respects their ancestral rights and their community needs, while allowing the development of sport fishing, which provides significant regional benefits.