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This book contains 17 chapters on studies on species invasions used as insights into ecology, evolution and biogeography. The chapters cover a diverse topics with various approaches. Some produce results that are suspected to be somewhat controversial. Chapter 1 suggests that the role of competition has been greatly overestimated and that facilitation and predation are equally important structuring forces in community ecology. Chapter 4 suggests that extinction is a largely idiosyncratic process and that only little will be learned that could allow us to predict its influence on species demise. Chapter 6 suggests that evolution can be exceedingly fast, so that strong evolutionary changes can take place in a species within a single decade following introduction. Chapters 8 and 9 both suggest that genetic bottlenecks are more rare and weaker forces than have previously been appreciated. Chapter 12 suggests …