You commented about the poison ivy. I hadn't heard that, but in some ways it doesn't surprise me. These bizarre results always appear out of ecological science. We just don't understand ecosystems well enough to know how they're going to respond to human activities, especially human activities that are as dramatic as oil sands development.
That uncertainty, to me anyway, just underscores the need to take a really precautionary approach and to admit that we don't know what the end result will be, and therefore we have to ensure that we have conservation offsets. So we have areas set aside that will remain intact to ensure that we maintain the natural capital of the region.