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
... National Park—History. 2. Yellowstone National Park—History. I. Title. QH105. W8W34 2006 577' . 09787'52—dc22 2005017301 9 8 7 6 5 4 3 2 1 Printed in the United States of America on acid-free paper To the three most important people in ...
... National Park—History. 2. Yellowstone National Park—History. I. Title. QH105. W8W34 2006 577' . 09787'52—dc22 2005017301 9 8 7 6 5 4 3 2 1 Printed in the United States of America on acid-free paper To the three most important people in ...
Стр. vii
... National Park, known as the northern range. It is the winter range of the largest of several wintering herds of Rocky Mountain elk (Cervus elaphus) that summer together on the higher elevation summer range in the central and southern ...
... National Park, known as the northern range. It is the winter range of the largest of several wintering herds of Rocky Mountain elk (Cervus elaphus) that summer together on the higher elevation summer range in the central and southern ...
Стр. viii
... national parks. Chapter 16 explores why the park-supported paradigm of the northern range has differed so markedly from the one I propose here. Chapter 17 proposes policy-setting mechanisms for U.S. national parks that would be ...
... national parks. Chapter 16 explores why the park-supported paradigm of the northern range has differed so markedly from the one I propose here. Chapter 17 proposes policy-setting mechanisms for U.S. national parks that would be ...
Стр. xi
... natural regulation paradigm but more broadly relevant to North American ecology and the implications to national park, wilderness, and protected-area policies. Within the past 15 years, my knowledge of the northern range scene has been ...
... natural regulation paradigm but more broadly relevant to North American ecology and the implications to national park, wilderness, and protected-area policies. Within the past 15 years, my knowledge of the northern range scene has been ...
Стр. 3
... 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 (figure 1.1) ...
... 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 (figure 1.1) ...
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 |
Другие издания - Просмотреть все
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 |
Часто встречающиеся слова и выражения
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