Changes of Species Richness in Heathland Communities over 15 Years following Disturbances
Figure 6
Location of variables and samples in the plane defined by the two first axes of the principal components analysis carried out with data from the three plots in zones B and C. (Annual herbaceous species number (A), perennial herbaceous species number (P), woody species number (W), , , , and cover of dominant species (Dom.).) Numbers representing years after experimental disturbances.