Maybe I'll start with the second part of the question, and then I'll turn to Patricia to talk about dissolved phosphorus.
Right now, through the Great Lakes nutrient initiative, we're doing a fair bit of research in the Great Lakes into the causes of the problem we're seeing with algae. We're trying to get a better understanding of the causes and the factors that are influencing the increase we're seeing in algae.
Certainly we need to work with partners, such as the Province of Ontario, the U.S. obviously as a partner that has to take on a target going forward, and local communities, to understand what is driving this increase, and what kinds of targets are necessary and how we might achieve them.
There are a number of parties involved. We want to get the science right before we start setting targets, and that's part of what's going on now, certainly as well as working with partners to make sure we have a common understanding of goals and objectives.
I'll turn to Patricia to talk about the dissolved phosphorus.