This volume in the Long-Term Ecological Research Network Series looks at the work carried out on climate change at all the LTER sites. It also looks at how our understanding of this work has developed. Global climate change is a central issue facing the world, an issue that brings large numbers of scientists together across a wide range of fields. These sites hold some of the best available data measuring long term impacts and changes in the environment. Until now the research done at these sites has not been previously made available to the broader climate change research community. This book will be of interest to the ecological community, and because it pulls together information from all 20 research sites, it should capture the interest of virtually the entire LTER research community.