Preface; Acknowledgments; Contents; Earthworms in North America; The Earthworms in Their Native Habitats; Introduction and Spread; Ecological Effects; Interacting Alien Species; Economic and Human Health Impacts; Control Efforts; Current Status and Likely Future; Public Perception and Current Policies; References; Zebra Mussels in Western Europe and North America; Cautionary Tale; The Mussel in Its Native Habitat; The Spread to Western Europe; Effects of the Zebra Mussel in Newly Invaded Waters in Western Europe; After Their Introduction, What Happened Next in Western Europe?

The Spread to North America and Further Invasion There Ecological Effects of the Zebra Mussel in North America; The Great Lakes; Phytoplankton; Initial Effects; Subsequent Development; Zooplankton; Benthic Fauna; Initial Effect; Subsequent Development; Fishes; The Quagga Mussel, Dreissena rostriformis bugensis; Hudson River; Economic Effects of the Zebra Mussel in North America; The Likely Future; Summary; References; Canadian Waterweed in Europe; Some Basic Plant Facts; Introduction and Spread in Europe; Ecological Effects of Dense Stands of Canadian Waterweed.

Control Attempts Then, What Happened?; What About the Exceptions?; Economic Effects; References; Himalayan Balsam in Europe; The Plant Itself; The Further Spread in Europe and Current Distribution; Ecological Effects of the Himalayan Balsam; Plant Species Diversity; Effects of Himalayan Balsam on the Diversity of Plant-ƯAssociated Fauna; Himalayan Balsam on Riverbanks and Increased Erosion; Some Observations of the Spread and Impact of the Himalayan Balsam in the Flatlands of Southwestern Sweden; Attitudes, Classifications, and Extermination and Control Attempts.

Economic Aspects of Himalayan Balsam Current Trends and the Likely Future of the Himalayan Balsam Invasion in Europe; References; The House Sparrow in North America; A Little About the Bird Itself; Introduction to North America; The Economic and Ecological Effects of the House Sparrows; Then What Happened?; How Do the House Sparrows Fare in Their Native Countries?; Some Loose Treads (Starlings and Predatory Birds); The Eurasian Tree Sparrow (Passer montanus) as Comparison; An Interesting Sidetrack; Summary; References; Rabbits in Australia; The European Rabbit.

Introduction and Release in Australia The Population Explosion and Spread; Ecological Effects; Economic Effects; Control Attempts; Foxes; Rabbit-Proof Fences; Myxomatosis; Rabbit Hemorrhagic Disease; Current Control Status; A Side Story About the Dingoes; References; Crayfish Plague in Europe; The Pathogen; The Spread; The First Phase; The Second Phase; Ecological Effects; Economic Effects; Control Attempts; On the Virtues or Lack Thereof of Introducing the Signal Crayfish to Europe; Official Policies and Public Perception; References; The Colorado (Potato) Beetle.