Figure 2

Biplot representing the first (PC1) and second (PC2) axes of principal component analysis, showing ordination of sites according to environmental variables measured in cattle fields (triangles), soybean crops (squares), seminatural grasslands (white circles), and tree plantations (black circles). Environmental variables are percentage coverage by shrubs (SHRUBS), herbaceous vegetation (HERBS), leaf litter (LITTER), and bare soil (BS), the mean vegetation height (MEANVEG), the maximum vegetation height (MAXVEG), vegetation density (VEGDEN), and the leaf litter depth (LITTDEPTH).