Greg Leach has a Ph.D. in botany and has worked across northern & central Australia and Papua New Guinea in many facets of wildlife conservation, specialising in plant taxonomy and ecology of tropical flora, botanical survey, threatened species management, traditional plant use and sustainable wildlife use. During 25 years with the Parks & Wildlife Service of the NT he managed the NT Herbarium and the Darwin Botanic Gardens. Most recently he was the CEO of Greening Australia NT and chair of the Board of the Australian Tropical Herbarium at the Cairns campus of JCU.
He has a particular interest in plant species that are threatened by activities such as habitat destruction, development or trade. Since 1997 he has worked as a plant expert representing the Oceania Region with the UN Convention on International Trade of Endangered Species (CITES). A particular focus has been the determining of safe harvest limits for perennial plants.
Greg is a University Fellow at the Research Institute for Environment and Livelihoods at Charles Darwin University and an Honorary Fellow at the Menzies School of Health Research.
Current research is focused on an Indigenous Medicinal plant project at the Menzies School of Health Research as well as plant taxonomic research at the NT Herbarium.