Recent years have seen a steep rise in invasions of non-native species in virtually all major ecoregions on Earth. Along with this rise has come a realization that a rigorous scientific understanding of why, how, when, and where species are transported is the required/necessary foundation for managing biological invasions. Invasive Species presents extensive information and new analyses on mechanisms of species transfer, or vectors, as the latest contribution from the Global Invasive Species Programme (GISP). Contributors assess invasion vectors and vector management in terrestrial, freshwater, and marine ecosystems for major taxonomic groups in a variety of regions around the world. The book: examines invasion causes, routes, and vectors in space and time; highlights current approaches and challenges to preventing new invasions, both from a geographic and taxonomic point of view; explores strategies, benefits, and limitations of risk assessment; offers a synthesis of many facets of vector science and management; presents recommendations for action.