Thank you for your question.
I am not a climate change expert with the WWF. My portfolio, as it were, is freshwater. I recall from the earlier sessions that you brought up an interesting point, however, that the emission of greenhouse gases from the oil sands industry, as well as the downstream use of that product—and let's be clear, it starts at the extraction side of things—is a significant contributor to greenhouse gas emissions, when you take it along the life cycle. So it is in fact a driver of the change that we're seeing in the river.
What I can maybe speak to more clearly is whether there is some discrepancy around how to look at what's happening in the river, and to look at past trends in river flow and what they mean for the future. We saw this morning that there are some very differing opinions on how to do that. If we look at a longer-term record, we may not see the same trend.
The approach that we take, and which our scientific experts inform us is the best approach, is to look at the period from 1970 onward. That's because it's the point in time when the IPCC determined that the forcing of global climate change became a human-induced impact. It suggests there was a significant change in what was normal at that point, and that's the trend we should be looking at. In fact there's a report put forward by a bunch of global experts on climate impacts on stream flow, and they use the term “stationarity”. In the past, we've assumed stationarity, meaning we assumed that the future would be like the past. Their overarching conclusion from their paper is that in fact stationarity is dead, that this underlying or fundamental premise of freshwater management planning is no longer valid as we move forward with climate change.
I know that doesn't quite answer your question about addressing the greenhouse gas emissions, but....