If I may, I'll just add a couple of small points to Gilles' answer.
We think of parks as the federal contribution to our protected areas network, but within my group, we also have national wildlife areas and migratory bird sanctuaries. Together, we have a land mass twice the size of Nova Scotia, so it's quite significant what is managed.
In addition, there are other programs inside the federal government, such as the ecological gifts program, for which people can receive a tax credit when they donate land to approved organizations. Similarly, the government--I believe it was a year ago or two years ago--launched the natural areas conservation program, with almost a quarter of a billion dollars for the Nature Conservancy of Canada and Ducks Unlimited. So again, trying to acquire those lands...
The final point I would make is that within SARA we have the habitat stewardship program, as well as a couple of other funding programs that also seek to promote stewardship of the landscape, even if it is not acquisition of landscapes. I just wanted to put that out there as well.