Description of studied species. Values of height, specific leaf area and wood density were obtained as explained in Materials and methods. Values of mean green canopy and plant density were obtained from Sapes et al. (2017), except for P. halepensis, L. fruticosum and T. tinctoria. For these three species, mean green canopy was obtained from 50 plants randomly selected from the sampled population, while values of plant density were obtained from five 100-m2 plots located in the study area. The biogeographical range description follows Bolòs et al., 2005 (W, western; SW, south-western)