I believe Ms. Lagarde or Ms. Durocher mentioned that. They mentioned the study that Diane Dauphin and Denis Lehoux conducted in the 2000s. They did an excellent study on erosion of the seaway shorelines. We can say that we're the ones continuing that work.
They had been talking about lower ship speeds since 2000, but their work stopped a few years later, in 2002. They didn't mention whether that reduced the effects of erosion. It was hard to see clearly whether erosion or the trend continued or not.
In the follow-up studies we're now conducting on Île Marie and Île des Barques in the Archipelago of Lake Saint Pierre, we can see that erosion is continuing in the various archipelagos in the fluvial section of the St. Lawrence.
Based on our studies, we feel that priority at the regional level, on which we're working, should be given to the areas experiencing the most erosion. Those are mainly the natural shorelines because they respond most quickly to ship and boat wake and other processes of the St. Lawrence. We can accurately target the sections most exposed to waves caused by ship and boat wake and can see that those natural environments continue to erode. There has been a 50% reduction. Certain islands can lose an average of one to two metres of land per year, as the Comité pour la protection des berges du Saint-Laurent mentioned earlier.
That's all I can say for the moment.