The Atacama toad (Rhinella atacamensis) exhibits an unusual clinal pattern of decreasing body size towards more arid environments

Table 3 Linear regression models of climate variables on body size of adult males and females of Rhinella atacamensis (mean snout-vent length by locality), ranked by the values of AICc, from the best to the worst model

	Model	Adjusted R²	K	AICc	∆AICc	AICw
1	BIO12 ( +)	0.73	3	78.80	0.00	0.39
2	BIO12 ( +), PET (-)	0.80	4	79.36	0.56	0.30
3	NDVI ( +)	0.65	3	81.91	3.11	0.08
4	B12 ( +), NDVI (-)	0.80	4	82.44	3.64	0.06
5	NDVI ( +), B1 (-)	0.71	4	83.49	4.69	0.04
6	B12 ( +), BIO4 ( +)	0.71	4	83.72	4.92	0.03
7	B12 ( +), B1 (-)	0.70	4	84.02	5.22	0.03
8	NDVI ( +), B4 (-)	0.66	4	85.54	6.74	0.01

Only models with low differences in AICc values relative to the best model (Δi < 7) are shown. For each model, the predictor variable name (with its respective regression coefficient sign), R² adjusted, estimated number of parameters (K), AICc values, delta AICc (Δi) and Akaike weights (AICw) are shown. The environmental variables were mean annual temperature (BIO1), temperature seasonality (BIO4), mean annual precipitation (BIO12), normalized index of vegetation difference (NDVI) and potential evapotranspiration (PET)

ISSN: 2056-3132