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Greg’s research program focuses on combining molecular genetic analysis with field ecology to study the molecular and behavioral ecology of marine apex predators. Both longitudinal (time) and latitudinal (space) studies on marine mammals and birds in polar, temperate and tropical ecosystems are pursued. He is particularly interested in investigating the effects of ecosystem and climate change on upper trophic levels and on top-down/bottom-up forcing. Greg completed his studies (B.Sc., Ph.D.) at University College Dublin, Ireland, where he focused on terrestrial mammals (ungulates and carnivores) before embarking on a career in marine science. He ran a research group at NOAA’s Southwest Fisheries Science Center in La Jolla, California, for 14 years studying the molecular and behavioral ecology of several marine mammal species. Current research includes field and lab studies on beluga whales, Steller sea lions, ice seals, bottlenose dolphins and polar bears. 

His research interests extend beyond the marine realm to the evolution of social behavior and mating systems in mammals, the role of individual fitness in population viability and adaptation, applying Resilience concepts to ecosystems and wildlife species, and the application of ancient DNA technology to ecosystem and evolutionary questions. Prior to joining Florida Atlantic University, Greg was adjunct professor at San Diego State University. He has an active graduate student program.