Biological Invasions publishes research papers on the patterns and processes of biological invasions (both human-mediated introductions and natural range expansions) in terrestrial, freshwater, and marine (including brackish) ecosystems. Papers concerning: the ecological consequences of invasions relative to alterations in community-ecosystem structure (including energy flow, biodiversity, and invasion-mediated extinction), the factors that influence inoculation, establishment, and persistence of invasions, the mechanisms that control the abundance and distribution of invasive species, biogeography, genetics, dispersal vectors, and the evolutionary consequences of invasions in both historical and geological time are especially encouraged, as are analytical syntheses and overviews of invasive biotas. Also of interest are papers with theoretical bases on biocontrol and on the release of genetically modified organisms as they illuminate the science of biological invasions, as well as scholarly papers on management and policy issues as they relate to conservation programs and the global amelioration or control of invasions. The journal will consider proposals for special issues resulting from conferences or workshops on invasions.