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Author:
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ISBN:
Category : Forest animals
Languages : en
Pages : 68
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Author:
Publisher:
ISBN:
Category : Forest animals
Languages : en
Pages : 68
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Author: Michael J. Wisdom
Publisher:
ISBN:
Category : Elk
Languages : en
Pages : 280
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Book Description
Author: Deborah C. Hayes
Publisher: Springer
ISBN: 1461418186
Category : Science
Languages : en
Pages : 666
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Book Description
USDA Forest Service Experimental Forests and Ranges (EFRs) are scientific treasures, providing secure, protected research sites where complex and diverse ecological processes are studied over the long term. This book offers several examples of the dynamic interactions among questions of public concern or policy, EFR research, and natural resource management practices and policies. Often, trends observed – or expected -- in the early years of a research program are contradicted or confounded as the research record extends over decades. The EFRs are among the few areas in the US where such long-term research has been carried out by teams of scientists. Changes in society’s needs and values can also redirect research programs. Each chapter of this book reflects the interplay between the ecological results that emerge from a long-term research project and the social forces that influence questions asked and resources invested in ecological research. While these stories include summaries and syntheses of traditional research results, they offer a distinctly new perspective, a larger and more complete picture than that provided by a more typical 5-year study. They also provide examples of long-term research on EFRs that have provided answers for questions not even imagined at the time the study was installed.
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Category : Forests and forestry
Languages : en
Pages : 30
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 802
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Author: Paul R. Josephson
Publisher: JHU Press
ISBN: 0801896398
Category : Technology & Engineering
Languages : en
Pages : 277
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Book Description
2008 Outstanding Academic Title, Choice Magazine From dirt bikes and jet skis to weed wackers and snowblowers, machines powered by small gas engines have become a permanent—and loud—fixture in American culture. But fifty years of high-speed fun and pristine lawns have not come without cost. In the first comprehensive history of the small-bore engine and the technology it powers, Paul R. Josephson explores the political, environmental, and public health issues surrounding one of America's most dangerous pastimes. Each chapter tells the story of an ecosystem within the United States and the devices that wreak havoc on it—personal watercraft (PWCs) on inland lakes and rivers; all-terrain vehicles (ATVs) in deserts and forests; lawn mowers and leaf blowers in suburbia. In addition to environmental impacts, Josephson discusses the development and promotion of these technologies, the legal and regulatory efforts made to improve their safety and environmental soundness, and the role of owners' clubs in encouraging responsible operation. Synthesizing information from medical journals, recent environmental research, nongovernmental organizations, and manufacturers, Josephson's compelling history leads to one irrefutable conclusion: these machines cannot be operated without loss of life and loss of habitat.
Author:
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ISBN:
Category :
Languages : en
Pages : 378
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Category :
Languages : en
Pages : 224
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Category :
Languages : en
Pages : 688
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Author: Alan A. Ager
Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 24
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Book Description
