Main zonal formations of Europe (following Bohn et al. 2000) and corresponding EVC classes. Orange: mediterranean sclerophyllous forests and scrub (Quercetea ilicis); yellow-green: submediterranean deciduous broad-leaved forests (Quercetea pubescentis); dark green: cool-temperate deciduous broad-leaved forests (Quercetea robori-petraeae, Carpino-Fagetea); lilac: boreal, hemiboreal and temperate-montane coniferous and mixed broad-leaved-coniferous forests (Vaccinio-Piceetea); pale pink: subarctic and temperate-subalpine open woodland and scrub (Betulo-Alnetea viridis).