Table 1.

Partial regression coefficients and standard errors (β ± SE), values of the statistic (t-value) and their associated significance value (P), for the complete multiple regression model including species richness (Ω) as the dependent variable (see text for details)

Trait	β ± SE	T-value	P
Intercept	−2.692 ± 2.397	−1.12	0.28
Disc structures	−0.498 ± 0.599	−0.83	0.42
Plantar tubercles	−0.501 ± 0.804	−0.624	0.54
Digit length	−0.090 ± 0.227	−0.40	0.70
Skin texture	−0.891 ± 0.279	−2.91	0.01
Maximum body size	1.937 ± 1.146	1.69	0.11
Microhabitat – shape	0.894 ± 0.660	1.36	0.20
Range size	0.601 ± 0.276	1.36	0.20
Vegetation – altitude	−0.741 ± 0.316	−2.34	0.03
Latitude	0.017 ± 0.026	0.66	0.52

Variables presenting a significant partial regression coefficient are highlighted in bold.