Born in Mexico. B.Sc. Forest Engineer studies obtained in 1991 from Autonomous University of Chapingo, Mexico. M.Sc.(1999) and Ph.D. (2004) degrees obtained from Postgraduate College of Agricultural Sciences, Mexico. Postdoctoral position (2005) at Instituto de EcologÃa, A.C., Mexico. Autonomous University of San Luis Potosi, Engineer Faculty professor and Arid Zones Research Institute researcher (2006 to date).