Contraction of the distribution area to LGM for most clades
When we projected the ecological niche onto geographic space (Figure 2e) and quantified the area occupied by each clade we detected a significant effect of clade location on the present-day area (Supporting Information), where northern and unstructured clades distribute over larger areas (Figure 2c) than southern clades. When projecting the models to LGM – CCSM conditions (Figure 2e), we detected that several clades showed a reduction in their geographic area (Figure 2d; Supporting Information shows projections to LGM using the MIROC GCM). The species F. columnaris did not present suitable area during LGM conditions for the CCSM GCM. No significant effect of clade was detected on the proportional change in area (Supporting Information). Most unstructured clades showed an increase in their distribution area during LGM (Figure 2d).