Figure 2. Nonmetric multidimensional scaling (NMDS) ordination plot of community composition. The ordination is based on cover (%) of moss and lichen species, and cyanobacterial community types (“dark” and “light”) from control and drought treatment plots. Grey arrows represent the distance of change between control and drought treatments per site. The black arrow indicates the direction of the maximum correlation of aridity index parameter with the ordination configuration, hence the decreasing aridity.