Table 1. Geospatial, soil and climatic data for all sites sampled.

Site	Altitude (m asl)	Latitude °S	Longitude °W	Soil Regolith	Slope	Aspect	pH Susp.	MAP*	MAT**	Aridity De Martonne Index
TLT01	4480	−23.50305	−67.72371	Alluvial, ignimbrite	40 °	N	5.23	161.9	4.2	11.4
TLT02	4370	−23.45127	−67.77322	Aeolian, volcanic	1 °	NW	5.31	142.4	4.5	9.8
TLT03	4270	−23.4323	−67.77125	Sandy alluvial, ignimbrite	5 °	W	5.73	125.9	4.8	8.5
TLT04	4174	−23.42283	−67.78008	Colluvium, volcanic	28 °	W 10° S	5.14	111.4	5.3	7.3
TLT05	4072	−23.41518	−67.78575	Colluvium, volcanic	17 °	N 60° E	5.37	97.4	6.1	6.0
TLT06	3970	−23.40508	−67.79452	Sandy, colluvium	11 °	N 70° W	5.54	85.0	6.5	5.2
TLT07	3870	−23.38819	−67.80757	Sandy alluvial, volcanic	5 °	W	5.68	74.2	6.9	4.4
TLT08	3870	−23.32856	−67.79890	Sandy alluvial, volcanic	5 °	N 60° E	5.77	75.1	6.9	4.4
TLT09	3770	−23.32218	−67.81620	Alluvial, volcanic	6 °	W	6.63	65.2	7.5	3.7
TLT10	3670	−23.32268	−67,83180	Alluvial sandy, ignimbrite (thick)	9 °	S	6.07	56.4	8.0	3.1
TLT11	3570	−23.31946	−67.84906	Sandy alluvial, volcanic (thick)	10 °	W	6.38	48.6	8.4	2.6
TLT12	3470	−23.31766	−67.86342	Alluvial, volcanic	3 °	N 60° W	7.18	41.7	9.0	2.2
TLT13	3370	−23.31377	−67.87685	Fluvial, sandy, volcanic	3 °	N 60° W	8.11	35.6	9.6	1.8
TLT14	3270	−23.31291	−−67.89014	Alluvial, ignimbrite	6 °	N 70 ° W	7.30	30.2	9.9	1.5
TLT15	3170	−23.31010	−67.90332	Alluvial, ignimbrite	10 °	N 30 °E	7.50	25.6	10.6	1.2
TLT16	3070	−23.31005	−67.91876	Alluvial, ignimbrite	5 °	N 20 ° E	8.09	21.5	10.9	1.0
TLT17	2970	−23.30211	−67.93427	Alluvial, ignimbrite	5 °	N 30 °E	8.26	18.0	11.4	0.8
TLT18	2870	−23.28868	−67.94587	Late Quaternary fluvial terrace	0 °		8.44	15.0	11.8	0.7
TLT19	2770	−23.28113	−67.95757	Alluvial, ignimbrite	5 °	N 20 ° W	8.58	12.4	12.2	0.6
TLT20	2670	−23.28023	−67.96940	Alluvial, ignimbrite	5 °	W	8.54	10.2	12.6	0.5

*MAP based on data from the Direccion General de Aguas (see Houston²⁴).

**MAT extracted from Hijmans et al.²⁵ (Data range 1950–2000).