Ian Douglas Rotherham is an Emeritus Professor at the Advanced Wellbeing Research Centre, Sheffield Hallam University, Sheffield, UK. An ecologist and environmental historian, he was formerly Professor of Environmental Geography and Reader in Tourism and Environmental Change. He has researched invasion biology since the 1980s, and novel and recombinant ecology since the 2000s. He has written extensively on related topics and specifically on the histories of exotic invaders and on urban ecological systems. He has published over 500 academic papers and 50+ books or book chapters.  Degrees: BSc (First Class Honours Ecology) 1978, PhD 1983, PGCE 1984, FRSB, MIBiol, MCIEEM Five years teaching. Ten years as head of a local government ecological advisory service. Thirty years as lecturer and research professor. Member of numerous academic and research bodies and numerous awards granted, including Fellow of the Royal Society for Biology.