Table 1. Models used to test responses of anuran functional diversity indices to elevational gradient.

Response variable	Source of variation	df	Estimate (SE)	t	P	R2
FRic: Functional richness; FEve: Functional evenness; FDiv: Functional divergence; FSpe: Functional specialization. Elevation and Elevation2 indicate linear and quadratic terms in regression models, respectively. Significant effects are indicated in bold.
FRic	Elevation	7	−0.003 (0.001)	−2.669	0.032	0.57
	Elevation2	7	<0.001 (<0.001)	2.793	0.027
	Intercept	7	1.403 (0.001)	3.020	0.019
FEve	Elevation	7	0.003 (0.18)	2.713	0.030	0.54
	Elevation2	7	<0.001 (<0.001)	−2.614	0.035
	Intercept	7	−0.729 (0.379)	−1.909	0.098
FDiv	Elevation	8	<0.001 (<0.001)	2.576	0.033	0.45
	Intercept	8	0.691 (0.063)	10.949	< 0.001
FSpe	Elevation	8	<0.001 (<0.001)	4.345	0.002	0.70
	Intercept	8	0.146 (0.050)	2.894	0.020