Table 1.

Variables used for modeling

SN	Variable	Description	Source
1	BIO1 (Annual mean temperature)	Continuous	http://www.worldclim.org/bioclim (Hijmans et al., 2005) (1–19)
2	BIO2 (Mean diurnal range)	Continuous
3	BIO3 (Isothermality)	Continuous
4	BIO4 (Temperature seasonality)	Continuous
5	BIO5 (Max temperature of warmest month)	Continuous
6	BIO6 (Min temperature of coldest month)	Continuous
7	BIO7 (Temperature annual range)	Continuous
8	BIO8 (Mean temperature of wettest quarter	Continuous
9	BIO9 (Mean temperature of driest quarter)	Continuous
10	BIO10 (Mean temperature of warmest quarter)	Continuous
11	BIO11 (Mean temperature of coldest quarter)	Continuous
12	BIO12 (Annual precipitation)	Continuous
13	BIO13 (Precipitation of wettest month)	Continuous
14	BIO14 (Precipitation of driest month)	Continuous
15	BIO15 (Precipitation seasonality) (Coefficient of variation)	Continuous
16	BIO16 (Precipitation of wettest quarter)	Continuous
17	BIO17 (Precipitation of driest quarter)	Continuous
18	BIO18 (Precipitation of warmest quarter)	Continuous
19	BIO19 (Precipitation of coldest quarter)	Continuous
20	Land cover	Categorical (Irrigated croplands, Rainfed croplands, Mosaic Croplands/Vegetation, Mosaic Vegetation/Croplands, Closed to open broadleaved evergreen or semi-deciduous forest, Closed broadleaved deciduous forest, Closed needle-leaved evergreen forest, Closed to open mixed broadleaved and needle-leaved forest, Mosaic Forest-Shrubland/Grassland, Mosaic Grassland, Forest-Shrubland, Closed to open shrubland, Closed to open grassland, Sparse vegetation, Close to open vegetation regularly flooded, Bare areas, Water bodies, Permanent snow and ice)	GLOBCOVER 2009 form University of Louvain (UCLouvain) and European Space Agency (ESA) (20)
21	Aspect	Categorical (Flat; North: 0${}^{\circ }$–22.5${}^{\circ }$; Northeast: 22.5${}^{\circ }$–67.5${}^{\circ }$; East: 67.5${}^{\circ }$–112.5${}^{\circ }$; Southeast: 112.5${}^{\circ }$–157.5${}^{\circ }$; South: 157.5${}^{\circ }$–202.5${}^{\circ }$; Southwest: 202.5${}^{\circ }$–247.5${}^{\circ }$; West: 247.5${}^{\circ }$–292.5${}^{\circ }$; Northwest: 292.5${}^{\circ }$–337.5${}^{\circ }$; North: 337.5${}^{\circ }$–360${}^{\circ }$)	GMTED2010 (21–24)
22	Slope	Categorical (0–4.375, 4.375–9.310, 9.310–14.216, 14.216–19.223, 19.223–24.395, 24.395–29.823, 29.823–35.773, 35.773–43.812, 43.812–72.092)
23	Elevation	Continuous (m)
24	Ruggedness	Continuous

SN: Serial number.