Following the discovery of large petroleum reserves in northern Alaska, the US Department of Energy implemented an integrated field and modeling study to help define potential impacts of energy-related disturbances on tundra ecosystems. This volume presents the major findings from this study, ranging from ecosystem physiology and biogeochemistry to landscape models that quantify the impact of road-building. An important resource for researchers and students interested in arctic ecology, as well as for environmental managers concerned with practical issues of disturbances.

Future development in the Arctic and Subarctic region requires careful attention to the possible consequences of the development activities themselves, in relation to their environmental, socioeconomic and cultural impacts. A more thorough understanding of the impact of future activities, however, demands the dissemination and confrontation of results from different regions and different scientific traditions. This requires scientific cooperation, not only across disciplines but across border. Primarily it requires both consensus and innovations in regard to methods. This book confronts such differences in approaches and methods in relation to the analysis of socioeconomic and environmental consequences of large-scale mineral and energy development activities in the Arctic and Subarctic, establishing the common ground upon which future research activities can be based.

As the global climate changes, there are concomitant changes in global biological productivity. This book is devoted to the assessment of terrestrial Net Primary Productivity ("the total amount of energy acquired by green plants during photosynthesis, minus the energy lost through respiration"--APDS&T, pp. 1457). The book is comprised of three major sections. The first section is a review of the processes that operate globally to influence productivity--these are the initial conditions of any model of primary productivity. The second section is comprised of chapters that assess the contribution of particular ecosystems to global productivity. The final major section contains chapters of a synthetic nature that describe attempts to model global productivity. This book should appeal to both ecologists and environmental scientists.

Wetlands are prominent landscapes throughout North America. The general characteristics of wetlands are controversial, thus there has not been a systematic assessment of different types of wetlands in different parts of North America, or a compendium of the threats to their conservation. Wetland Habitats of North America adopts a geographic and habitat approach, in which experts familiar with wetlands from across North America provide analyses and syntheses of their particular region of study. Addressing a broad audience of students, scientists, engineers, environmental managers, and policy makers, this book reviews recent, scientifically rigorous literature directly relevant to understanding, managing, protecting, and restoring wetland ecosystems of North America.

Soon after the first Earth Day in 1970, the academic world saw a virtual explosion of new, interdisciplinary 'environmental' programs, many of which took explicit note for the first time of the fact that 'environmental' problems are inherently social problems as well. Even in the new programs, however, issues of equity and the environment were usually relegated to isolated classes on environmental ethics. Today, they still are.