In respect of the issue about intensive winter grazing, we know that in the parts of the country that are reliant on supplementary crops, or fodder crops grown in winter, if that's done in the wrong way—and it has been at times in New Zealand—then that creates a lot of sediment. We've all seen the pictures of cows just about up to their udders in mud in a way that's not good for animal welfare, and it certainly can spoil adjacent rivers all the way down to the estuaries. 