Contribution to the Macrophytic Typology of Belgian Reference Watercourses

Figure 4

Probability of the Monte Carlo randomization test of the indicator species at every level of the grouping (a) and Two-way clustering of sites and species (b). The circles’ colour intensities reflect the abundance of each species—the most ubiquitous species are outlined in yellow while the characteristic species are outlined with different colours. Abbreviations and full names are given at the end of the text.

(a)

(b)