Invasive species have a critical and growing effect upon natural areas. They can modify, degrade, or destroy wildland ecosystem structure and function, and reduce native biodiversity. Landscape-level solutions are needed to address these problems. Conservation biologists seek to limit such damage and restore ecosystems using a variety of approaches. One such approach is biological control: the deliberate importation and establishment of specialized natural enemies, which can address invasive species problems and which should be considered as a possible component of restoration. Biological control can be an effective tool against many invasive insects and plants but it has rarely been successfully employed against other groups. Safety is of paramount concern and requires that the natural enemies used be specialized and that targeted pests be drivers of ecological degradation. While modern approaches allow species to be selected with a high level of security, some risks do remain. However, as in all species introductions, these should be viewed in the context of the risk of failing to reduce the impact of the invasive species. This unique book identifies the balance among these factors to show how biological control can be integrated into ecosystem restoration as practiced by conservation biologists. Jointly developed by conservation biologists and biological control scientists, it contains chapters on matching tools to management goals; tools in action; measuring and evaluating ecological outcomes of biological control introductions; managing conflict over biological control; and includes case studies as well as an ethical framework for integrating biological control and conservation practice. Integrating Biological Control into Conservation Practice is suitable for graduate courses in invasive species management and biological control, as well as for research scientists in government and non-profit conservation organizations.

Dr. Allen Carson Cohen's new edition of Insect Diets: Science and Technology continues to provide a current, integrated review of the field of insect diets. It reaffirms and expands upon the belief that the science of diet development and the technology of diet application in rearing programs require formal foundations and guidelines. Cohen argues

In this magnificently illustrated book, conservationist and celebrated outdoors photographer Tim Palmer launches us on a revealing journey among the hemlock and beech trees that have for millennia towered over America’s eastern woodlands. The eastern hemlock and North American beech once thrived from Maine to Georgia, casting shade on trout streams, nourishing wildlife large and small, and gracing uncounted valleys, mountainsides, parks, and backyards. These trees now face tragic decimation by exotic insects and pathogens. Palmer’s photos record the splendor of the cherished hemlock and beech in the same way that pictures of iconic, historic buildings commemorate classic landmarks gone the way of the wrecking ball. And yet, as Palmer underscores in his final chapter, the lessons learned as we address the fate of these trees can help us chart a better course for all wooded landscapes in the years ahead. This story of loss, scientific inquiry, and prospective recovery is vital to understanding nature in our time. As an act of artistic preservation, a report on the science vital to the survival of these trees, and a call to action, Twilight of the Hemlocks and Beeches assures a lasting legacy for this irreplaceable forest community. With more than one hundred exquisite full-color photographs, this book is a must-have for outdoor enthusiasts, natural historians, ecologists, and all lovers of nature.

This book is a printed edition of the Special Issue "Understanding and Managing Emerald Ash Borer Impacts on Ash Forests" that was published in Forests

Forest land managers face the challenges of preparing their forests for the impacts of climate change. However, climate change adds a new dimension to the task of developing and testing science-based management options to deal with the effects of stressors on forest ecosystems in the southern United States. The large spatial scale and complex inter