Table 2.

Indices of phylogenetic signal for variables depicting the geography of distribution, the thermal environment and thermal performance. p-values are based on 10 000 permutations: (.), p < 0.1; ***p < 0.001. Indices significantly different from 0 are shown in italic. A short key to the interpretation of indices: constrained evolution relative to Brownian motion if Moran's I (max. range: −1; +1) >0, Bloomberg's K (0; >1) >1, and Pagel's λ (0; 1) ≈0.5. For full details see electronic supplementary material, S4.

	geography		thermal environment		thermal performance
	median elevation	elevational range size	spatial variability	temporal variability	performance breadth
I	0.173***	−0.017	−0.034	0.138***	−0.018
K	0.347***	0.103	0.127	0.330***	0.161
λ	0.795 (.)	0.000	0.000	0.532***	0.000