Written by a world-respected scientist on the subject of the book, this is an advanced text for students of ecology, population biology and evolution, as well as professional ecologists, conservationists and naturalists. Knowledge of the invasive species and the problems they cause, a subject that has grown substantially in recent years, is succinctly summarized in this topical book. It draws on much of the SCOPE programme on the ecology of biological invasions, in which the author has been intimately involved for some years. It also draws on the author's many years of experience teaching in the subject. Several superb colour plates of key invasive species are included and the book discusses the vital questions raised by biological control and the release of genetically modified organisms.