There are more than one thousand species of threatened birds in the world, while many others are valued for sport and some are serious pests. This volume reviews our current understanding of avian population dynamics and explores ways in which population studies can contribute to effective conservation and management. Estimation of demographic parameters, the role of mathematical modelling, and the special problems of island populations and seabird populations are discussed. The emphasis throughout is on how bird populations are regulated under various constraints and conditions, including the impact of environmental changes.

Past progress and future challenges R.J. Wheater Royal Zoological Society of Scotland, Edinburgh, UK. In the past two decades much has been achieved in the sphere of breeding endangered species, and we should be pleased that our co operative efforts have already borne so much fruit. However, on balance and despite the best efforts of conservationists, the position of wildlife in the wild places where they are best conserved has become worse, often dramatically worse. Before returning to the United Kingdom in 1972, I was in Uganda for 16 years, most of which time was spent as Chief Warden of Murchison Falls National Park. Our main problem was that an over-population of large mammals was having a devastating impact on the habitat. Devas tation was being wrought on woodland areas by the arrival of large numbers of elephants into the sanctuary of the Park, following changes in land use in the areas outside the Park. These changes were in response to the requirements of an ever-expanding human population.

The loss and fragmentation of natural habitats is one of the major issues in wildlife management and conservation. Habitat "corridors" are sometimes proposed as an important element within a conservation strategy. Examples are given of corridors both as pathways and as habitats in their own right. Includes detailed reviews of principles relevant to the design and management of corridors, their place in regional approaches to conservation planning, and recommendations for research and management.

Concern over climate change and the ongoing challenges of managing degraded ecosystems have made the field of ecological restoration a growing focus in the agendas of national and international conservation organizations, including the United Nations. The problems facing us are both complex and urgent, and effective solutions are needed. Project Planning and Management for Ecological Restoration presents principles of sound planning and management that will greatly increase the likelihood that completed projects will meet stakeholder expectations. John Rieger, John Stanley, and Ray Traynor have been involved in restoration activities for over thirty years and were part of the small group of restorationists who recognized the need for a professional organization and in 1987 founded the Society for Ecological Restoration. This book comes out of their experiences practicing restoration, conducting research, and developing and refining new techniques and methods. In the book, the authors describe a process for planning and managing an ecological restoration project using a simple, four-faceted approach: planning, design, implementation, and aftercare. Throughout, the authors show how to incorporate principles of landscape ecology, hydrology, soil science, wildlife biology, genetics, and other scientific disciplines into project design and implementation. Illustrations, checklists, and tables are included to help practitioners recognize and avoid potential problems that may arise. Project Planning and Management for Ecological Restoration provides a straightforward framework for developing and carrying out an ecological restoration project that has the highest potential for success. Professional and volunteer practitioners, land managers, and property owners can apply these guidelines to the wide variety of conditions and locations where restoration is needed. Long overdue, this book will inform and advance the effective practice of this rapidly expanding field.