Patrice is probably a better person to answer this question, but I will say that we see water clarity improve, basically because they're out-competing the native species in the watershed. As a result of that, you have the excrement, I guess, from these zebra and quagga mussels, which is producing more protein or phosphorus-type products, and that enhances the growth of algae blooms.
Do you want to add to that, Patrice?