Figure 1.
Examples of Spanish semi-arid shrublands (A) and steppes (B), showing the dominance of biological soil crusts (BSCs) in plant interspaces. Close-up views of gypsum and calcareous BSC communities are shown in C) and D), respectively. Partial views of ongoing climate change (E) and erosion (F) experiments focusing on BSCs. Photo credits: F. T. Maestre (A-E) and Y. Cantón (F).