Canada losing track of salmon health as industrial pressures grow

New research shows that Canada is steadily losing its ability to monitor the health of wild Pacific salmon at a time when development pressures on salmon watersheds are increasing.

A study published in the Canadian Journal of Fisheries and Aquatic Sciences finds that monitoring of salmon spawning populations has declined by roughly one-third since the adoption of Canada’s Wild Salmon Policy, leaving nearly half of Pacific salmon populations without enough data to assess their status.

Spawning-stream surveys are a cornerstone of salmon conservation, providing the information needed to track population trends, assess risk, and guide fisheries and recovery decisions. As these surveys decline, so does the ability to detect early warning signs of population collapse—particularly important as industrial projects, infrastructure, and
cumulative land-use pressures expand in salmon-bearing watersheds.

The study is accompanied by a Letter published in Science that places these monitoring losses in the context of recent federal decisions to accelerate industrial approvals while reducing environmental oversight.

Together, the papers highlight the growing risks of managing salmon—and approving large-scale development—without reliable baseline ecological information.

“Monitoring is how we understand what’s happening to salmon on the ground,” says Dr. Michael Price, Director of Science at SkeenaWild Conservation Trust and adjunct professor in SFU’s Department of Biological Sciences. “When monitoring declines at the same time development pressures increase, decisions are increasingly made with an incomplete picture of what is at risk.”