Dr Will Figueira is a senior lecturer in Marine Animal Biology with the University of Sydney. He obtained his BSc in 1993 (University of California) and PhD in Marine Ecology in 2003 from Duke University, USA. His research focuses on fish population ecology, specifically the behavior and demographics of individual populations including post- settlement demographics of reef fishes, the large scale connectivity patterns, and potential for range shifts due to climate change. Interest in larger scale dynamics of reef fish has evolved into the development of conceptual and analytical models of applied metapopulation theory to marine systems in general, to study the impact of variations in habitat quality and network connectivity on system dynamics and specifically source-sink structure. This work can be used for citing marine reserves and creating effective, biologically interacting reserve networks.