Thomas T. Veblen, Ph.D., University of California, Berkeley, 1975, is a Professor interested in biogeography and plant ecology. His main research areas are vegetation dynamics in relation to natural and anthropogenic disturbances and climatic variation, including tree-ring applications in forest dynamics. His current projects include work on the interactions among fire, blowdown and insect outbreaks in Colorado forests, and work on the effects of introduced herbivores and climatic variation on vegetation recovery following fire in the southern Andes of Argentina. His work is supported by NSF, USGS, and the USDA Forest Service. He currently serves on the editorial boards of Physical Geography, Journal of Biogeography, Dendrochronologia (Italy), and Global Ecology and Biogeography.