Yellowstone's Destabilized Ecosystem: Elk Effects, Science, and Policy ConflictOxford University Press, 25 мая 2006 г. - Всего страниц: 392 Wagner, one of our most distinguished wildlife biologists, is a strong critic of ecological practices in the national parks. This book provides an assessment of the ecological history of Yellowstone's northern range, since before the park existed, showing the impact of US Park Service policies on the health of the areas they oversee. He demonstrates that elk had been historically rare throughout the region and that overgrazing by elk has seriously degraded the landscape and altered the structure of the area. This is a major contribution to reconstructing the ecology of this region over the course of the past 500 years. It is also a critique of US Park Service management policies and their stewardship of the nation's most cherished natural areas. Wagner's book will generate substantial attention and debate both in the scientific and policy/management communities. |
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Стр. iv
... Yellowstone's destablized ecosystem: elk effects, science, and policy conflict / by Frederic H. Wagner. p. cm. Includes bibliographical references and index. ISBN-13 978-0-19-514821-3 ISBN 0-19-514821-5 1. Ecology—Yellowstone National Park ...
... Yellowstone's destablized ecosystem: elk effects, science, and policy conflict / by Frederic H. Wagner. p. cm. Includes bibliographical references and index. ISBN-13 978-0-19-514821-3 ISBN 0-19-514821-5 1. Ecology—Yellowstone National Park ...
Стр. vii
... YELLOWSTONE SYNTHESIS This book has two major messages. The first is the synthesis of a conceptual model simulating the structure and function of an ecosystem along the northern border of Yellowstone National Park, known as the northern ...
... YELLOWSTONE SYNTHESIS This book has two major messages. The first is the synthesis of a conceptual model simulating the structure and function of an ecosystem along the northern border of Yellowstone National Park, known as the northern ...
Стр. viii
... park personnel since that date. This divergence of views raises the entire question of the role of science in public ... Yellowstone and more generally U.S. national parks. Chapter 16 explores why the park-supported paradigm of the ...
... park personnel since that date. This divergence of views raises the entire question of the role of science in public ... Yellowstone and more generally U.S. national parks. Chapter 16 explores why the park-supported paradigm of the ...
Стр. xi
... Yellowstone (Chase 1986). Also in 1986, Charles ... national park, wilderness, and protected-area policies. Within the past 15 years, my knowledge of the northern range scene has been advanced further by interactions with former Yellowstone ...
... Yellowstone (Chase 1986). Also in 1986, Charles ... national park, wilderness, and protected-area policies. Within the past 15 years, my knowledge of the northern range scene has been advanced further by interactions with former Yellowstone ...
Стр. 3
... Yellowstone National Park, then subdivide into several discrete herds to winter outside the park. As commented, the largest of these winters in a low-elevation area in and adjacent to the northern part of the park, the northern range ...
... Yellowstone National Park, then subdivide into several discrete herds to winter outside the park. As commented, the largest of these winters in a low-elevation area in and adjacent to the northern part of the park, the northern range ...
Содержание
1 | |
13 | |
Part III Elk Effects on Ecosystem Structure and Function | 57 |
Part IV The Role of Science in Policy Process | 305 |
References | 335 |
Index | 359 |
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Yellowstone's Destabilized Ecosystem: Elk Effects, Science, and Policy Conflict Frederic H. Wagner Ограниченный просмотр - 2006 |
Yellowstone's Destabilized Ecosystem: Elk Effects, Science, and Policy Conflict Frederic H. Wagner Ограниченный просмотр - 2006 |
Yellowstone's Destabilized Ecosystem: Elk Effects, Science, and Policy Conflict Frederic H. Wagner Ограниченный просмотр - 2006 |
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abundance animals aspen authors Barmore beaver bighorn bighorn sheep biomass Bishop bison Butte Creek censuses century clones commented competition components conifers Coughenour Coughenour and Singer decades density Despain early ecological effects elk herd elk numbers elk population Engstrom ern range erosion estimates evidence exclosures factors figure forage grasses grazing habitat herbaceous herbaceous vegetation herbivory higher elevations highlining Houston hunting impacts increase indicates inferences inside the exclosures interspecific competition Kay’s Keigley Kittams lakes Lamar River levels lower measurements ment mule deer National Park northern herd northern range ecosystem observed occurred park establishment park history park’s period photographs plants processes production pronghorn r-values reduced reported result riparian riparian zones sagebrush Schullery sediment shrub significant soil species studies suggest tannin tion trees trends ungrazed ungulate Wagner Wambolt willow decline winter range Yellowstone Yellowstone National Park