Bachelor of Science with a major in Biology from the University of Chile. Ph.D. in Zoology from the University of California-Berkeley, United States. Senior Ecologist Certified by the North American Ecological Society, United States. He is currently a Pontifical Catholic University of Chile Professor and director of the Center for Applied Ecology and Sustainability (CAPES), Chile. In addition, he is a National Prize for Natural Sciences. He specializes in community ecology, guild structure, predator/prey interactions, biodiversity, and invasive species.