Aquatic systems are some of the most biologically diverse; however, invasive plants that grow in these areas challenge this diversity. Purple loosestrife, a herbaceous perennial, for example, is the equivalent of biological pavement when it invades a wetland by displacing all native species and creating a stand so dense ducks can no longer use it to breed. Invasive Aquatic and Wetland Plants details the competitive strategies of destructive plants in these inaccessible areas, as well as the latest techniques being used for their control.