Table 1. Variables fitted in BRT algorithm for niche modeling.

	Variables	Units
1.	Rainfall wettest month	mm
2.	Temperature Seasonality	°c*10
3.	Calcic Vertisols	%
4.	Soil organic carbon density	kg/m3
5.	Clay content	mass fraction (%)
6.	Cattle density	animals/km2
7.	Enhanced vegetation index	index
8.	Haplic Calcisols	%
9.	Haplic Vertisols	%
10.	Annual Average Relative Humidity	%
11.	Length of longest dry season	months
12.	Palmer Drought Severity Index	index
13.	Potential evapotranspiration	mm
14.	Soil pH	pH
15.	Silt content	mass fraction (%)
16.	Slope	degrees
17.	Soil Moisture	m^3/m^3
18.	Soil texture	factor