That's a difficult question.
Fish habitat, as Dr. Chow-Fraser is talking about it, is mostly spawning habitat in wetlands and tributaries and so forth, so those are critical habitats that have to be protected for fishery production.
I was talking about the growth of fish in the lakes. As a rule of thumb, over a broad range, the more phosphorus you have in a lake, the more fish production you're going to have. But you can get to the point where you go over the top and you start creating hypoxia, to use a word that I've been waiting to use, low oxygen conditions where you then actually start reducing the habitat available to fish and having negative consequences. I would think in western Lake Erie we're at the point where there's enough eutrophication that the fishery is being damaged, whereas in the other lakes, if we were only concerned about fish, we might want more phosphorus and more fish.