The Role of Predation in Limiting Moose at Low Densities in Alaska and Yukon and Implications for Conservation

The Role of Predation in Limiting Moose at Low Densities in Alaska and Yukon and Implications for Conservation PDF Author: William C. Gasaway
Publisher:
ISBN:
Category : Aegolius funereus
Languages : en
Pages : 306

Get Book Here

Book Description
Study of moose (Alces alces) in east central Alaska which tries to determine why moose populations often remain low relative to carrying capacity, the potential for moose harvest yields from northern ecosystems and the role of predition by wolves (Canis lupus) and bears (Ursus arctos and U. americanus).

The Role of Predation in Limiting Moose at Low Densities in Alaska and Yukon and Implications for Conservation

The Role of Predation in Limiting Moose at Low Densities in Alaska and Yukon and Implications for Conservation PDF Author: William C. Gasaway
Publisher:
ISBN:
Category : Aegolius funereus
Languages : en
Pages : 306

Get Book Here

Book Description
Study of moose (Alces alces) in east central Alaska which tries to determine why moose populations often remain low relative to carrying capacity, the potential for moose harvest yields from northern ecosystems and the role of predition by wolves (Canis lupus) and bears (Ursus arctos and U. americanus).

Brucellosis in the Greater Yellowstone Area

Brucellosis in the Greater Yellowstone Area PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309059895
Category : Science
Languages : en
Pages : 207

Get Book Here

Book Description
Brucellosis, a bacterial disease, was first noted in the Greater Yellowstone Area in 1917 and has been a chronic presence there since then. This book reviews existing scientific knowledge regarding brucellosis transmission among wildlife, particularly bison, elk, and cattle, in the Greater Yellowstone Area. It examines the mechanisms of transmission, risk of infection, and vaccination strategies. The book also assesses the actual infection rate among bison and elk and describes what is known about the prevalence of Brucella abortus among other wildlife.

After the Fires

After the Fires PDF Author: Linda L. Wallace
Publisher: Yale University Press
ISBN: 0300127758
Category : Nature
Languages : en
Pages : 400

Get Book Here

Book Description
Americans currently choose their president through the electoral college, an extraordinarily complex mechanism that may elect a candidate who does not receive the most votes. In this provocative book, George Edwards III argues that, contrary to what supporters of the electoral college claim, there is no real justification for a system that might violate majority rule. Drawing on systematic data, Edwards finds that the electoral college does not protect the interests of small states or racial minorities, does not provide presidents with effective coalitions for governing, and does little to protect the American polity from the alleged harms of direct election of the president. In fact, the electoral college distorts the presidential campaign so that candidates ignore most small states and some large ones and pay little attention to minorities, and it encourages third parties to run presidential candidates and discourages party competition in many states. Edwards demonstrates effectively that direct election of the president without a runoff maximizes political equality and eliminates the distortions in the political system caused by the electoral college.

Wolves on the Hunt

Wolves on the Hunt PDF Author: L. David Mech
Publisher: University of Chicago Press
ISBN: 022625514X
Category : Nature
Languages : en
Pages : 218

Get Book Here

Book Description
The wolf is an adept killer, able to take down prey much larger than itself. While adapted to hunt primarily hoofed animals, a wolf - or especially a pack of wolves - can kill individuals of just about any species. Combining behavioral data, thousands of hours of original field observations, research in the literature, a wealth of illustrations, and - in the e-book edition and online - video segments from cinematographer Robert K. Landis, the authors create a compelling and complex picture of these hunters.

The Wolves of Denali

The Wolves of Denali PDF Author: L. David Mech
Publisher: U of Minnesota Press
ISBN: 9780816629589
Category : Nature
Languages : en
Pages : 254

Get Book Here

Book Description
Conducted over nine years in Alaska's Denali National Park, presents the results of the most comprehensive study of wolves and their prey ever availabile.

Wild Mammals of North America

Wild Mammals of North America PDF Author: George A. Feldhamer
Publisher: JHU Press
ISBN: 9780801874161
Category : Nature
Languages : en
Pages : 1250

Get Book Here

Book Description
Table of contents

Trophic Cascades

Trophic Cascades PDF Author: John Terborgh
Publisher: Island Press
ISBN: 1597268194
Category : Science
Languages : en
Pages : 487

Get Book Here

Book Description
Trophic cascades—the top-down regulation of ecosystems by predators—are an essential aspect of ecosystem function and well-being. Trophic cascades are often drastically disrupted by human interventions—for example, when wolves and cougars are removed, allowing deer and beaver to become destructive—yet have only recently begun to be considered in the development of conservation and management strategies. Trophic Cascades is the first comprehensive presentation of the science on this subject. It brings together some of the world’s leading scientists and researchers to explain the importance of large animals in regulating ecosystems, and to relate that scientific knowledge to practical conservation. Chapters examine trophic cascades across the world’s major biomes, including intertidal habitats, coastal oceans, lakes, nearshore ecosystems, open oceans, tropical forests, boreal and temperate ecosystems, low arctic scrubland, savannas, and islands. Additional chapters consider aboveground/belowground linkages, predation and ecosystem processes, consumer control by megafauna and fire, and alternative states in ecosystems. An introductory chapter offers a concise overview of trophic cascades, while concluding chapters consider theoretical perspectives and comparative issues. Trophic Cascades provides a scientific basis and justification for the idea that large predators and top-down forcing must be considered in conservation strategies, alongside factors such as habitat preservation and invasive species. It is a groundbreaking work for scientists and managers involved with biodiversity conservation and protection.

The Colorado Plateau II

The Colorado Plateau II PDF Author: Charles Van Riper
Publisher: University of Arizona Press
ISBN: 9780816525263
Category : Nature
Languages : en
Pages : 472

Get Book Here

Book Description
The publication of The Colorado Plateau: Cultural, Biological, and Physical Research in 2004 marked a timely summation of current research in the Four Corners states. This new volume, derived from the seventh Biennial Conference on the Colorado Plateau in 2003, complements the previous book by focusing on the integration of science into resource management issues. The 32 chapters range in content from measuring human impacts on cultural resources, through grazing and the wildland-urban interface issues, to parameters of climate change on the Plateau. The book also introduces economic perspectives by considering shifting patterns and regional disparities in the Colorado Plateau economy. A series of chapters on mountain lions explores the human-wildland interface. These chapters deal with the entire spectrum of challenges associated with managing this large mammal species in Arizona and on the Colorado Plateau, conveying a wealth of timely information of interest to wildlife managers and enthusiasts. Another provocative set of chapters on biophysical resources explores the management of forest restoration, from the micro scale all the way up to large-scale GIS analyses of ponderosa pine ecosystems on the Colorado Plateau. Given recent concerns for forest health in the wake of fires, severe drought, and bark-beetle infestation, these chapters will prove enlightening for forest service, park service, and land management professionals at both the federal and state level, as well as general readers interested in how forest management practices will ultimately affect their recreation activities. With broad coverage that touches on topics as diverse as movement patterns of rattlesnakes, calculating watersheds, and rescuing looted rockshelters, this volume stands as a compendium of cutting-edge research on the Colorado Plateau that offers a wealth of insights for many scholars.

General Technical Report PNW-GTR

General Technical Report PNW-GTR PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 990

Get Book Here

Book Description


Wolves, Bears, and Their Prey in Alaska

Wolves, Bears, and Their Prey in Alaska PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309174651
Category : Science
Languages : en
Pages : 224

Get Book Here

Book Description
This book assesses Alaskan wolf and bear management programs from scientific and economic perspectives. Relevant factors that should be taken into account when evaluating the utility of such programs are identified. The assessment includes a review of current scientific knowledge about the dynamics and management of large mammalian predator-prey relationships and human harvest of wildlife in northern ecosystems, and an evaluation of the extent to which existing research and management data allow prediction of the outcome of wolf management or control programs and grizzly bear management programs. Included is an evaluation of available economic studies and methodologies for estimating the costs and benefits of predator control programs in Alaska.