Figure 5. Effect of geographical distance (GEO), climatic
distance (CLM) and habitat (HAB; only for the island scale) on pairwise
βSIM at large (A), intermediate (B) and small (C)
scales. R2 for geographical, climatic distances and
habitat (this latter only for the island scale) were obtained from a
hierarchical partitioning of the global R2 while the
significance and sign of the relationships were obtained from Multiple
Regressions on distance Matrices (MRM) (see main text for more
information). Sign of the relationship is indicated above the bars, +
for positive relationships and – for negative ones. Filled bars
indicate significant effect, while empty ones indicate non-significant
effect. At the small scale (C), habitats correspond to native forests
(NatFor), naturalized vegetation (NatVeg) and seminatural pastures
(SemPast).