Box and whisker plots showing distribution of slope in plots where each species was present. The upper and lower edges of each box indicate the upper and lower quartiles of the slope distribution, the centre line indicates the median, the whiskers indicate the maximum and minimum slopes, and the dot indicates the mean slope. Species are ordered on the basis of mean slope from lowest to highest. Herbaceous species with mean cover more than 5% are shown along with the four most prevalent woody species. Fertility tolerance classes of herbaceous species are also shown.