What contributed to the decline of Canada's west coast salmon populations?

Question

Quizplus · Accepted Answer

Overharvesting by efficient fishing vessels contributed to the decline of Canada's west coast salmon populations. This resulted in a reduction of the overall biomass of salmon available for reproduction and subsequent generations. While factors such as the introduction of sea lampreys and bycatch of the tuna industry may have also played a role, overfishing is considered to be the primary cause. The presence of larger numbers of smolts every year may actually be a positive factor for the recovery of salmon populations if appropriate conservation measures are put in place.

What Contributed to the Decline of Canada's West Coast Salmon