The chapters in this book present a snapshot of the state of knowledge of air pollution effects at the beginning of the 21st century. From their different disciplines, a distinguished collection of authors document their understanding of how leaves, trees, and forests respond to air pollutants and climate change. Scenarios of global change and air pollution are described. Authors describe responses of forests to climate variability, troposhpheric ozone, rising atmospheric CO2, the comination of CO2 and ozone, and deposition of acidic compounds and heavy metals. The response to ozone receive particular attention because of increasing concern about its damaging effects and increasing concentration in rural areas. Scaling issues are addressed - from leaves to trees, from juvenile trees to mature trees, from short-term responses to long-term responses, and rom small-scale experiments and observations to large-scale forest ecosystems. This book is one major product of a conference sponsored by the International Union of Forest Research Organizations, the USDA Forest Service Global Change Northern Station Program, the Artur Ross Foundation, NCASI, the Canadian Fores Service, and Michigan Technological University. The conference, held in May 200 in Houghton, Michigan, USA, was appropriately titled "Air Pollution, Global Change, and Forests in the New Millenium.
