Fig. 3.

Overview on relative abundance and species richness of ectomycorrhizal taxa on roots of Fagus sylvatica, Tilia spp., and Carpinus betulus. Figures in the bars indicate the number of EM fungal species, which were classified as W = EM fungi with a wide host range found on Fagus, Tilia, and Carpinus (black); I = EM fungi with an intermediate host range occurring on roots of two tree taxa (red Fagus and Tilia, green Fagus and Carpinus, marine Tilia and Carpinus); and N = EM fungi with a narrow host range occurring only on one tree taxon (turquoise)