Effects of Grazing by Wild Ungulates in Yellowstone National Park PDF Download
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Author: Francis J. Singer
Publisher:
ISBN:
Category : Grazing
Languages : en
Pages : 394
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Book Description
Author: Francis J. Singer
Publisher:
ISBN:
Category : Grazing
Languages : en
Pages : 394
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Book Description
Author: Patrick James White
Publisher:
ISBN: 9780934948302
Category : American bison
Languages : en
Pages :
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Book Description
Author: Frederic H. Wagner
Publisher: Oxford University Press
ISBN: 0195148215
Category : Nature
Languages : en
Pages : 386
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Book Description
"The beloved Yellowstone National Park underwent a management shift in 1969 that drastically altered its landscape. This book comes at a time when scientific results are sometimes withheld so that they do not challenge policy positions. The author charges that Yellowstone-supported research has produced a faulty ecological paradigm, whether consciously or not, in order to maintain status quo of the Park's "natural-regulation" policy." "Wagner's ecosystem model of the Park's northern range focuses on a low-elevation region of the Park where a large herd of Rocky Mountain elk winters. His study spans 132 years of ecological, hydrologic, archaeological, photographic, and historic evidence and synthesizes the herd's impact over time."--BOOK JACKET.
Author: P. J. White
Publisher: Harvard University Press
ISBN: 0674076419
Category : Nature
Languages : en
Pages : 362
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Book Description
The world's first national park is constantly changing. How we understand and respond to recent events putting species under stress will determine the future of ecosystems millions of years in the making. Marshaling expertise from over 30 contributors, Yellowstone's Wildlife in Transition examines three primary challenges to the park's ecology.
Author: James A. Pritchard
Publisher: U of Nebraska Press
ISBN: 1496234251
Category : History
Languages : en
Pages : 625
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Book Description
Preserving Yellowstone's Natural Conditions describes in fascinating detail the historical origins and development of wildlife management in Yellowstone National Park, alongside shifting understandings of nature in science and culture. James A. Pritchard traces the idea of "natural conditions" through time, from the introduction of this concept by early ecologists in the 1930s. He tells several overlooked stories of Yellowstone wildlife, including a sensational scientific hunt for bears with bow and arrow, and the episode of the predator pelicans, which facilitated a fundamental shift toward protection of all wildlife in Yellowstone, and for the National Park Service as a whole. A prolonged debate regarding the elk herd on Yellowstone's northern range is addressed, along with the origins of the notion of natural regulation, and the reasons for ending direct reductions of elk. This story emphasizes how ecological science came to Yellowstone and to the National Park Service, subsequently developing over a period of decades. In the new afterword to this book Pritchard summarizes recent developments in wildlife science and management--such as the "ecology of fear" and trophic cascades--and discusses historical continuities in the role of the park as a wildlife refuge and the inestimable values of the park for wildlife conservation.
Author:
Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 164
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Book Description
Author: United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Parks, Historic Preservation, and Recreation
Publisher:
ISBN:
Category : Travel
Languages : en
Pages : 40
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Book Description
Author: Thomas J. Stohlgren
Publisher: OUP USA
ISBN: 0195172337
Category : Science
Languages : en
Pages : 408
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Book Description
Here is a thorough presentation and critique of the sampling approaches, designs and field techniques for measuring plant diversity. Ecologists interested in assessing landscapes and ecosystems must measure biomass, cover, and the density or frequency of various key species. Recently, sampling designs for measuring species richness and diversity, patterns of plant diversity, species-environment relationships, and species distributions have become finer-grained, as it has become increasingly important to accurately map and assess rare species for conservation. This book lays out the range of current methods for mapping and measuring species diversity, for field ecologists, resource managers, conservation biologists, and students, as a tool kit for future field measurements of plant diversity.
Author: Friedrich-Karl Holtmeier
Publisher: Springer
ISBN: 9401792941
Category : Science
Languages : en
Pages : 547
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Book Description
In its first English-language edition, this book introduces the many-faceted interactions of animal populations with their habitats. From soil fauna, ants and termites to small and large herbivores, burrowing mammals and birds, the author presents a comprehensive analysis of animals and ecosystems that is as broad and varied as all nature. Chapter 2 addresses the functional role of animals in landscape ecosystems, emphasizing fluxes of energy and matter within and between ecosystems, and the effects of animals on qualitative and structural habitat change. Discussion includes chapters on the role of animal population density and the impacts of native herbivores on vegetation and habitats from the tropics to the polar regions. Cyclic mass outbreaks of species such as the larch bud moth in Switzerland, the mountain pine beetle and the African red-billed weaver bird are described and analyzed. Other chapters discuss Zoochory – the dispersal of seeds by ants, mammals and birds – and the influence of burrowing animals on soil development and geomorphology. Consideration extends to the impact of feral domestic animals. Chapter 5 focuses on problems resulting from introduction of alien animals and from re-introduction of animal species to their original habitats, discusses the effects on ecosystems of burrowing, digging and trampling by animals. The author also addresses keystone species such as kangaroo rats, termites and beavers. Chapter 6 addresses the role of animals in landscape management and nature conservation, with chapters on the impact of newcomer species such as animals introduced into Australia, New Zealand and Europe, and the consequences of reintroduction of species to original habitat. It also discusses the carrying capacity of natural habit, public attitudes toward conversation and more. The final section ponders the effects of climate on interactions between animals and their habitats.
Author: W. F. Mueggler
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 166
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Book Description
A classification system based upon potential natural vegetation is presented for the grasslands and shrublands of the mountainous western third of Montana. The classification was developed by analyzing data from 580 stands. Twenty-nine habitat types in 13 climax series are defined and a diagnostic key provided for field identification. Environment, vegetative composition, forage production, changes with grazing, and range management practices are described for each habitat type.
