front cover of Atlas of Wintering North American Birds
Atlas of Wintering North American Birds
An Analysis of Christmas Bird Count Data
Terry Root
University of Chicago Press, 1989
The Atlas of Wintering North American Birds represents the effects of thousands of people who have participated in the Christmas Bird Counts, an annual event sponsored since 1900 by the National Audubon Society. Unlike a conventional field guide, the Atlas doesn't show what birds look like, but rather tells where to find them in the winter months.

Terry Root has used the data from the 1963-72 counts to provide the first large-scale biogeographical account of birds wintering in North America. Using sophisticated computer techniques, Root has translated the data into both traditional contour maps and innovative new maps that stimulate three dimensions. The maps show at a glance that, for example, the Baltimore Oriole winters primarily along the eastern seaboard, with the densest populations in Florida between Tallahassee and Gainesville and in North Carolina from Rocky Mount to the Croatan National Forest.
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front cover of Wildlife Responses to Climate Change
Wildlife Responses to Climate Change
North American Case Studies
Edited by Stephen H. Schneider and Terry L. Root; Foreword by Mark Van Putten
Island Press, 2001

Wildlife Responses to Climate Change is the culmination of a three-year project to research and study the impacts of global climate change on ecosystems and individual wildlife species in North America. In 1997, the National Wildlife Federation provided fellowships to eight outstanding graduate students to conduct research on global climate change, and engaged leading climate change experts Stephen H. Schneider and Terry L. Root to advise and guide the project. This book presents the results, with chapters describing groundbreaking original research by some of the brightest young scientists in America. The book presents case studies that examine:

  • ways in which local and regional climate variables affect butterfly populations and habitat ranges
  • how variations in ocean temperatures have affected intertidal marine species
  • the potential effect of reduced snow cover on plants in the Rocky Mountains
  • the potential effects of climate change on the distribution of vegetation in the United States
  • how climate change may increase the susceptibility of ecosystems to invasions of non-native species
  • the potential for environmental change to alter interactions between a variety of organisms in whitebark pine communities of the Greater Yellowstone Ecosystem
Also included are two introductory chapters by Schneider and Root that discuss the rationale behind the project and offer an overview of climate change and its implications for wildlife.

Each of the eight case studies provides important information about how biotic systems respond to climatic variables, and how a changing climate may affect biotic systems in the future. They also acknowledge the inherent complexities of problems likely to arise from changes in climate, and demonstrate the types of scientific questions that need to be explored in order to improve our understanding of how climate change and other human disturbances affect wildlife and ecosystems.

Wildlife Responses to Climate Change is an important addition to the body of knowledge critical to scientists, resource managers, and policymakers in understanding and shaping solutions to problems caused by climate change. It provides a useful resource for students and scientists studying the effects of climate change on wildlife and will assist resource managers and other wildlife professionals to better understand factors affecting the species they are striving to conserve.

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