Figure 3: Pairwise comparison of arbuscular mycorrhizal (AM) proportions of total vegetation cover between disturbed (roadside plot) and undisturbed (adjacent plot) vegetation. For each region, every individual transect along the studied mountain roads was plotted as the intersection between the percentage of AM vegetation cover in 2 × 50 m plots parallel to the road (0 m to 2 m from the road) and in 2 × 50 m plots of adjacent vegetation perpendicular to the roadside (52 to 102 m from the road). Points above the identity line correspond to transects in which the AM proportion of the total vegetation cover was higher along the roadside compared to the proportion in the adjacent vegetation. The blue regression line was plotted using the results of linear models, highlighting that the relationships between AM vegetation cover proportion in the disturbed and undisturbed vegetation are different from what would be expected if disturbance had no effect (i.e., relative to the 1/1-line). Regions are ordered from lowest total proportion of AM vegetation cover (Norway) to highest (Armenia) and points are colored from low temperatures (blue) to high temperatures (red) scaled within region.