Dr. Gary Wellborn investigates how predation, competition, and other features of the environment shape species evolution and lineage diversification. They studied a group of freshwater crustacean species in the genus Hyalella. These species are common in Oklahoma and throughout North and South America. At KAEFS, they have studied common small-sized species that lives in ponds (see photo). Studies of this population have included evaluating its competitive interactions with other species, its antipredator adaptations, and its mating behavior.