Zebra mussels are prolific alien invaders that have rapidly becomeestablished in waters of the eastern United States and Canada. Thesenatives of the Black, Caspian, Azov and Aral Sea drainage basins were firstdiscovered in Lake St. Clair near Detroit, Michigan, in 1988. By 1991, theyhad spread throughout the Great Lakes basin and are now establishedthroughout the Mississippi River basin and are spreading west intoOklahoma. Except for Oklahoma, zebra mussels have not been detected inopen waters of the West. However, without effective prevention measures, their invasion into the West is a real and imminent possibility

From the “dean of Western writers” (The New York Times) and the Pulitzer Prize winning–author of Angle of Repose and Crossing to Safety, a fascinating look at the old American West and the man who prophetically warned against the dangers of settling it In Beyond the Hundredth Meridian, Wallace Stegner recounts the sucesses and frustrations of John Wesley Powell, the distinguished ethnologist and geologist who explored the Colorado River, the Grand Canyon, and the homeland of Indian tribes of the American Southwest. A prophet without honor who had a profound understanding of the American West, Powell warned long ago of the dangers economic exploitation would pose to the West and spent a good deal of his life overcoming Washington politics in getting his message across. Only now, we may recognize just how accurate a prophet he was.

Biological invasions are one of the strongest drivers of global environmental change, and invasive species are now often in the public discourse. At the same time, economists have begun to take a real interest in determining how invasive species interact with economic systems, and how invaders should be controlled to optimize societal wealth. Although the work from ecologists and economists have both greatly expanded our understanding of the drivers and impacts of invasions, little integration between the fields has occurred that would allow managers and policy-makers to identify the optical expenditures on, for example, prevention and control of invasive species. Because the level of effort expended on invasive species management is intricately linked to the costs and projected benefits of that management, there is an urgent need for greater synthesis between ecology and economics. This book brings ecology and economics together in new ways to address how we deal with the dynamics and impacts of invasive species, and is the outcome fo many years of collaborative research between a small group of economists and ecologists. The outcome is clear demonstration of the utility of combining ecological and economic models for addressing critical questions in the management of invasive species.