Charles Perrings is Professor of Environmental Economics at Arizona State University, where he directs the ecoSERVICES Group within the College of Liberal Arts and Sciences. He co-chairs (with Shahid Naeem) the ecoSERVICES core project of DIVERSITAS, the international program of biodiversity science. He is the author of numerous books and scientific papers on the economics of biodiversity change.
Harold Mooney is Professor of Biology at Stanford University. His main research area is in global change biology. He has published widely on invasive species and was the founding chair of the Global Invasive Species Programme. He currently chairs the scientific committee for DIVERSITAS, the international program for research in biological diversity.
Mark Williamson is Professor of Biology (Emeritus) at the University of York. He is a population biologist who founded the department of biology at York in 1963 and who has been involved with biological invasion research since the first SCOPE programme (1982-89).