I'll take that question.
I'm Andrew Thomson, the regional director of science for the Pacific region.
We continue to do, I would say, a multivariate study on the key factors for particular salmon stocks. We have one going on right now for west coast Vancouver Island chinook to assist in understanding rebuilding plans for them. There is a wide variety of research avenues in which we're trying to understand what the drivers are for some of our salmon populations and their decline.
As Dr. Walters said earlier, the Cowichan River is a good example where habitat impact was one of the key drivers for that particular stock. That tends to be variable depending on the stock, depending on the area and, of course, depending on the life history of the salmon.