Roger del MoralRoger del Moral is Professor of Biology at the University of Washington. His research includes the mechanisms of vegetation response to disturbances caused by volcanoes, glaciers, grazing and urbanization. He has practised wetland restoration for ovr 20 years and has experience with dune and subalpine meadow restoration. He had studied volcanoes on four continents, including detailed studies of Mount St. Helens that started in 1980. Read More Read Less