Margaret (Margie) Mayfield is a community ecologist interested in how plant communities form and are maintained. Her work spans theoretical and applied topics including coexistence theory, functional ecology, macro ecology, restoration ecology and biodiversity conservation. She earned my PhD at Stanford University, where she worked with Paul Ehrlich and Gretchen Daily to understand how human land use changes impacted on tropical plant communities. She then completed a postdoctoral fellowship with Jonathan Levine, at the University of California Santa Barbara, working at the interface of population ecology and community ecology. Her work with Jonathan focused on using coexistence theory to improve our understanding of community assembly. In 2007, she moved to Australia to the University of Queensland where she has been ever since. She is now a Professor of plant ecology and the Head of the School of Biological Sciences at the University of Queensland.