When I was on the environment committee—this was about five or six years ago, or maybe more than that—we did a study on the Great Lakes water quality. I would heartily recommend to all committee members that this study be reviewed.
As we discussed in my earlier testimony, algae blooms result from non-point source pollution, which is basically runoff from the watershed. My colleague here on the panel talked at great length about B.C. watersheds, and I strongly agree with her approach. What needs to be done is.... Runoff, whether it's from farms, cities, towns, roads or suburban developments, somehow needs to be controlled. The eutrophication is largely caused by phosphorus. People often think nitrogen is involved. That's not the case, as shown by the great work at the Experimental Lakes Area by Dr. Schindler. It sounds simple, getting rid of phosphorus input into lakes, but it's devilishly difficult, because just about everything we do on the landscape causes some kind of runoff.
Eutrophication is a problem in the Great Lakes. It's a problem for lakes that are naturally eutrophic. Lake Erie is a naturally eutrophic lake. It's not really a problem in Lake Superior and Lake Huron. Those are oligotrophic lakes that are nutrient-poor. However, Lake Erie is nutrient-rich to begin with, with an excess of phosphorus. Knowing the development going on in Ontario, both urban and agricultural, and the loss of wetlands, Lake Erie, from a eutrophication standpoint, is in serious trouble.