Lawrence R. Walker is a Professor of Plant Ecology at the University of Nevada, Las Vegas. He received his Ph.D. in 1985 from the University of Alaska, Fairbanks. His research focuses on the mechanisms that drive plant succession, particularly primary succession on volcanoes, landslides, glacial moraines, floodplains, dunes, mine tailings and abandoned roads. He has co-written or co-edited four books on disturbance ecology, succession and restoration, published over 100 peer-reviewed papers, and is an ISI Highly Cited Researcher with over 2500 peer citations of his work. Walker received a Fulb...