Experimental Reduction of Wolves in the Yukon PDF Download
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Author: Robert D. Hayes
Publisher:
ISBN:
Category : Predation (Biology)
Languages : en
Pages : 48
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Book Description
"We conducted a large-scale, controlled experiment to study the responses of declining woodland caribou (Rangifer tarandus), moose (Alces alces), and Dall sheep (Ovis dalli) to a 5-year reduction in wolf (Canis lupus) numbers in the Aishihik area in the southwestern Yukon"--page 1.
Author: Robert D. Hayes
Publisher:
ISBN:
Category : Predation (Biology)
Languages : en
Pages : 48
Get Book Here
Book Description
"We conducted a large-scale, controlled experiment to study the responses of declining woodland caribou (Rangifer tarandus), moose (Alces alces), and Dall sheep (Ovis dalli) to a 5-year reduction in wolf (Canis lupus) numbers in the Aishihik area in the southwestern Yukon"--page 1.
Author: Bob Hayes
Publisher: eBookIt.com
ISBN: 1456610473
Category : Nature
Languages : en
Pages : 170
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Book Description
The Yukon wolf is the largest race of Canis lupus in the world. There are 5,000 wolves in the territory. Wolves live in all Yukon mountain ranges hunting Dall's sheep and caribou in the high alpine. In the forested valleys they hunt moose, the ideal prey size for packs to handle. Regional wolf numbers depend on the number of moose in the area. Packs are territorial except in the far north where wolves migrate long distances to follow the Porcupine caribou herd year-round. --From book cover.
Author: Graham Humphrys
Publisher: Springer Science & Business Media
ISBN: 1402038143
Category : Science
Languages : en
Pages : 226
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Book Description
The presentation and representation of the environment occurs throughout academia and across all news media. The strict protocols of science often clash with environmental information available from sources that dwell on subjective aesthetic, emotional and personal sensitivities. This book challenge the reader, as student, teacher, researcher or policy maker, to reflect critically on the ways that environments are studied, interpreted, presented and represented, in education and public policy.
Author: Maurice Hornocker
Publisher: University of Chicago Press
ISBN: 0226353478
Category : Science
Languages : en
Pages : 331
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Book Description
The cougar is one of the most beautiful, enigmatic, and majestic animals in the Americas. Eliciting reverence for its grace and independent nature, it also triggers fear when it comes into contact with people, pets, and livestock or competes for hunters’ game. Mystery, myth, and misunderstanding surround this remarkable creature. The cougar’s range once extended from northern Canada to the tip of South America, and from the Pacific to the Atlantic, making it the most widespread animal in the western hemisphere. But overhunting and loss of habitat vastly reduced cougar numbers by the early twentieth century across much of its historical range, and today the cougar faces numerous threats as burgeoning human development encroaches on its remaining habitat. When Maurice Hornocker began the first long-term study of cougars in the Idaho wilderness in 1964, little was known about this large cat. Its secretive nature and rarity in the landscape made it difficult to study. But his groundbreaking research yielded major insights and was the prelude to further research on this controversial species. The capstone to Hornocker’s long career studying big cats, Cougar is a powerful and practical resource for scientists, conservationists, and anyone with an interest in large carnivores. He and conservationist Sharon Negri bring together the diverse perspectives of twenty-two distinguished scientists to provide the fullest account of the cougar’s ecology, behavior, and genetics, its role as a top predator, and its conservation needs. This compilation of recent findings, stunning photographs, and firsthand accounts of field research unravels the mysteries of this magnificent animal and emphasizes its importance in healthy ecosystem processes and in our lives.
Author: A. T. Bergerud
Publisher: McGill-Queen's Press - MQUP
ISBN: 0773576789
Category : Nature
Languages : en
Pages : 657
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Book Description
The George River caribou herd increased from 15,000 animals in 1958 to 700,000 in 1988 - the largest herd in the world at the time. The authors trace the fluctuations in this caribou population back to the 1700s, detail how the herd escaped extinction in the 1950s, and consider current environmental threats to its survival. In an examination of the life history and population biology of the herd, The Return of Caribou to Ungava offers a synthesis of the basic biological traits of the caribou, a new hypothesis about why they migrate, and a comparison to herd populations in North America, Scandinavia, and Russia. The authors conclude that the old maxim, "Nobody knows the way of the caribou," is no longer valid. Based on a study in which the caribou were tracked by satellite across Ungava, they find that caribou are able to navigate, even in unfamiliar habitats, and to return to their calving ground, movement that is central to the caribou's cyclical migration. The Return of Caribou to Ungava also examines whether the herd can adapt to global warming and other changing environmental realities.
Author: David Willis
Publisher: Macmillan
ISBN: 9781429204460
Category : Nature
Languages : en
Pages : 480
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Book Description
This book integrates the science of wildlife and fisheries. Updates include coverage of geographic information systems and biotelemetry; preferred structures for fish aging; information on diseases such as chronic wasting disease, avian flu, West Nile virus, viral haemorrhagic septicemia, and whirling disease.
Author: Susan G. Clark
Publisher: University of Chicago Press
ISBN: 022610754X
Category : Nature
Languages : en
Pages : 422
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Book Description
Strategies for protecting wolves, mountain lions, and more—by taking the human species into account as well: “Very valuable.”—Journal of Wildlife Management Drawing on six case studies of wolf, grizzly bear, and mountain lion conservation in habitats stretching from the Yukon to Arizona, Large Carnivore Conservation argues that conserving and coexisting with large carnivores is as much a problem of people and governance—of reconciling diverse and sometimes conflicting values, perspectives, and organizations, and of effective decision making in the public sphere—as it is a problem of animal ecology and behavior. By adopting an integrative approach, editors Susan G. Clark and Murray B. Rutherford seek to examine and understand the interrelated development of conservation science, law, and policy, as well as how these forces play out in courts, other public institutions, and the field. In combining real-world examples with discussions of conservation and policy theory, Large Carnivore Conservation not only explains how traditional management approaches have failed to meet the needs of all parties, but also highlights examples of innovative, successful strategies and provides practical recommendations for improving future conservation efforts. “Building on decades of work, this book integrates biological knowledge with human dimensions study and charts a course for coexistence with large carnivores.”—Douglas W. Smith, Senior Wildlife Biologist, Yellowstone National Park
Author: Paul R. Krausman
Publisher: JHU Press
ISBN: 1421443961
Category : Nature
Languages : en
Pages : 468
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Book Description
"The book contains the essential information that wildlife biologists and managers use to manage wildlife populations today, and it gives students the information they need to pursue a profession in wildlife management and conservation"--
Author: P. J. White
Publisher: Harvard University Press
ISBN: 0674076435
Category : Nature
Languages : en
Pages : 321
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Book Description
The world's first national park, Yellowstone is a symbol of nature's enduring majesty and the paradigm of protected areas across the globe. But Yellowstone is constantly changing. How we understand and respond to events that are putting species under stress, say the authors of Yellowstone's Wildlife in Transition, will determine the future of ecosystems that were millions of years in the making. With a foreword by the renowned naturalist E. O. Wilson, this is the most comprehensive survey of research on North America's flagship national park available today. Marshaling the expertise of over thirty contributors, Yellowstone's Wildlife in Transition examines the diverse changes to the park's ecology in recent decades. Since its creation in the 1870s, the priorities governing Yellowstone have evolved, from intensive management designed to protect and propagate depleted large-bodied mammals to an approach focused on restoration and preservation of ecological processes. Recognizing the importance of natural occurrences such as fires and predation, this more ecologically informed oversight has achieved notable successes, including the recovery of threatened native species of wolves, bald eagles, and grizzly bears. Nevertheless, these experts detect worrying signs of a system under strain. They identify three overriding stressors: invasive species, private-sector development of unprotected lands, and a warming climate. Their concluding recommendations will shape the twenty-first-century discussion over how to confront these challenges, not only in American parks but for conservation areas worldwide. Highly readable and fully illustrated, Yellowstone's Wildlife in Transition will be welcomed by ecologists and nature enthusiasts alike.
Author: Monte Hummel
Publisher: Dundurn
ISBN: 1550028391
Category : Nature
Languages : en
Pages : 291
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Book Description
Widespread concern surrounds the future of caribou. Caribou and the North brings both the facts and the feelings of the current situation to a North American readership. The writers look at why we need to conserve the caribou, the threats that have faced caribou in the past, present, and future, and the actions that we can take.
