FIGURE 4.

The relationship between latitude and the foliar fungal community on the pedunculate oak Quercus robur, separately for each leaf flush, across a latitudinal gradient in Europe. Panels show the relationship between latitude in decimal degrees and the relative abundance of (a) plant pathogens, (b) saprotrophs, (c) basidiomycetes with unknown functions, and (d) unknown fungi. Statistically significant p‐values are shown in the top‐left of each panel. Shown are regression lines with their associated standard error (shaded area), separately for each leaf flush. Dots represent a leaf flush on a single tree. Only guilds with statistically significant results are presented; for the full set of panels, see Figure S5.