. 2018 Sep 19;13(9):e0204114. doi: 10.1371/journal.pone.0204114

Table 1. Descriptive statistics of the variables used in the models.

The i-v numbers following each variable indicates in which hypothesis the variable was used: i. Energy, ii. energy-water, iii. terrestrial primary productivity, iv. temporal heterogeneity, v. area. All data are available on the S2 Table.

Variable	Code	Mean	Standard Deviation
Species richness	SR	11.517	9.347
January evapotranspiration (mm day^-1)^{i, ii}	AETJan	100.028	41.490
June evapotranspiration (mm day^-1)^{i, ii}	AETJun	66.735	39.275
Primary productivity (cal. m² day)ⁱⁱⁱ	PP	8086.156	3313.487
Annual temperature variation (°C * 10)^iv	TempVar	1023.135	783.507
Annual average rainfall (mm)^{ii, iv}	AveRF	1866.077	563.649
Annual rainfall variation (mm)^iv	ARV	57.131	22.580
Flow accumulation^v	FAC	532.294	601.729