Implications Of Cougar Prey Selection And Demography On Population Dynamics Of Elk In Northeast Oregon

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Implications of Cougar Prey Selection and Demography on Population Dynamics of Elk in Northeast Oregon

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Author : Darren A. Clark
Publisher :
ISBN 13 :
Total Pages : 297 pages
Book Rating : 4.:/5 (874 download)

Book Synopsis Implications of Cougar Prey Selection and Demography on Population Dynamics of Elk in Northeast Oregon by : Darren A. Clark

Download or read book Implications of Cougar Prey Selection and Demography on Population Dynamics of Elk in Northeast Oregon written by Darren A. Clark and published by . This book was released on 2014 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mule deer (Odocoileus hemionus hemionus) and Rocky Mountain elk (Cervus canadensis nelsoni; hereafter elk) populations in northeast Oregon have declined in the past 10 to 20 years. Concurrent with these declines, cougar (Puma concolor) populations have apparently increased, leading to speculation that predation by cougars may be responsible for declining ungulate populations. However, empirical data on cougar diets, kill rates, and prey selection are lacking to support this speculation. Furthermore, the common assumption that cougar populations have increased in northeast Oregon may not be well founded because cougar populations in other areas within the Pacific Northwest region have declined in recent years. My primary research objectives were to (1) estimate kill rates and prey selection by cougars in northeast Oregon, (2) document causes of mortality and estimate survival rates for cougars, (3) estimate population growth rates of cougars in northeast Oregon and simulate the effects of hypothetical lethal control efforts on the cougar population, and (4) investigate the relative influence of top-down, bottom-up, and climatic factors for limiting population growth rates of elk in northeast Oregon. Results from my research will help guide cougar and elk management in northeast Oregon and provide a framework for assessing relative effects of top-down, bottom-up, and abiotic factors on population growth rates of ungulates in this and other areas. I implemented a 3-year study in northeast Oregon to investigate diets, kill rates, and prey selection of cougars in a multiple-prey system to better understand mechanisms by which cougars may influence ungulate populations. During my research, 25 adult cougars were captured and fitted with Global Positioning System (GPS) collars to identify kill sites. I monitored predation sequences of these cougars for 7,642 days and located the remains of 1,213 prey items killed by cougars. Cougars killed ungulates at an average rate of 1.03 per week (95% CI = 0.92 - 1.14); however, ungulate kill rates were variable and influenced by the season and demographic classification of cougars. Cougars killed ungulates 1.55 (95% CI = 1.47 - 1.66) times more frequently during summer (May-Oct) than during winter (Nov-Apr), but killed similar amounts of ungulate biomass (8.05 kg/day; 95% CI = 6.74 - 9.35) throughout the year. Cougars killed ungulates more frequently in summer because juvenile ungulates comprised most of the diet and were smaller on average than ungulate prey killed in winter. Female cougars with kittens killed more frequently (kills/day) than males or solitary females. After accounting for the additional biomass of kittens in cougar family groups, male cougars killed on average more biomass of ungulate prey per day than did females (R = 0.41, P

Canine Olfaction Science and Law

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Author : Tadeusz Jezierski
Publisher : CRC Press
ISBN 13 : 1482260271
Total Pages : 492 pages
Book Rating : 4.4/5 (822 download)

Book Synopsis Canine Olfaction Science and Law by : Tadeusz Jezierski

Download or read book Canine Olfaction Science and Law written by Tadeusz Jezierski and published by CRC Press. This book was released on 2016-04-20 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: The value of the canine nose is well-documented, and working dogs are being utilized for their olfactory skills in an increasing number of fields. Not only are dogs used by police, security, and the military, but they are also now used in forensic science, in medical detection of disease, in calculating population trends of endangered species and e

Cougar

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Author : Maurice Hornocker
Publisher : University of Chicago Press
ISBN 13 : 0226353478
Total Pages : 331 pages
Book Rating : 4.2/5 (263 download)

Book Synopsis Cougar by : Maurice Hornocker

Download or read book Cougar written by Maurice Hornocker and published by University of Chicago Press. This book was released on 2009-12-15 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Using Science to Improve the BLM Wild Horse and Burro Program

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Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309264944
Total Pages : 399 pages
Book Rating : 4.3/5 (92 download)

Book Synopsis Using Science to Improve the BLM Wild Horse and Burro Program by : National Research Council

Download or read book Using Science to Improve the BLM Wild Horse and Burro Program written by National Research Council and published by National Academies Press. This book was released on 2013-10-04 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using Science to Improve the BLM Wild Horse and Burro Program: A Way Forward reviews the science that underpins the Bureau of Land Management's oversight of free-ranging horses and burros on federal public lands in the western United States, concluding that constructive changes could be implemented. The Wild Horse and Burro Program has not used scientifically rigorous methods to estimate the population sizes of horses and burros, to model the effects of management actions on the animals, or to assess the availability and use of forage on rangelands. Evidence suggests that horse populations are growing by 15 to 20 percent each year, a level that is unsustainable for maintaining healthy horse populations as well as healthy ecosystems. Promising fertility-control methods are available to help limit this population growth, however. In addition, science-based methods exist for improving population estimates, predicting the effects of management practices in order to maintain genetically diverse, healthy populations, and estimating the productivity of rangelands. Greater transparency in how science-based methods are used to inform management decisions may help increase public confidence in the Wild Horse and Burro Program.

Land Mammals of Oregon

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Author : B. J. Verts
Publisher : Univ of California Press
ISBN 13 : 9780520211995
Total Pages : 728 pages
Book Rating : 4.2/5 (119 download)

Book Synopsis Land Mammals of Oregon by : B. J. Verts

Download or read book Land Mammals of Oregon written by B. J. Verts and published by Univ of California Press. This book was released on 1998 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive, up-to-date treatment of mammals of Oregon since Vernon Bailey's THE MAMMALS AND LIFE ZONES OF OREGON was published in 1936. This new book provides a basic reference to mammalian life in the northwestern U.S., with descriptions of 136 extant or recently extirpated species. 122 color and 36 b&w photos, 140 maps, 150 drawings.

Yellowstone Cougars

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Author : Toni Karen Ruth
Publisher :
ISBN 13 : 1607328283
Total Pages : 336 pages
Book Rating : 4.6/5 (73 download)

Book Synopsis Yellowstone Cougars by : Toni Karen Ruth

Download or read book Yellowstone Cougars written by Toni Karen Ruth and published by . This book was released on 2019 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Examines the effect of wolf restoration on cougar population in Yellowstone National Park. No other study has addressed theoretical and practical aspects of competition between large carnivores. A thorough examination of cougar ecology, how they interact and [are] influenced by wolves, how this knowledge informs management and conservation"--Provided by publisher.

Desert Puma

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Author : Kenneth A. Logan
Publisher : Island Press
ISBN 13 : 1610910583
Total Pages : 498 pages
Book Rating : 4.6/5 (19 download)

Book Synopsis Desert Puma by : Kenneth A. Logan

Download or read book Desert Puma written by Kenneth A. Logan and published by Island Press. This book was released on 2001-08-01 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists and conservationists are beginning to understand the importance of top carnivores to the health and integrity of fully functioning ecosystems. As burgeoning human populations continue to impinge on natural landscapes, the need for understanding carnivore populations and how we affect them is becoming increasingly acute.Desert Puma represents one of the most detailed assessments ever produced of the biology and ecology of a top carnivore. The husband-and-wife team of Kenneth Logan and Linda Sweanor set forth extensive data gathered from their ten-year field study of pumas in the Chihuahua Desert of New Mexico, also drawing on other reliable scientific data gathered throughout the puma's geographic range. Chapters examine: the evolutionary and modern history of pumas, their taxonomy, and physical description a detailed description and history of the study area in the Chihuahua Desert field techniques that were used in the research puma population dynamics and life history strategies the implications of puma behavior and social organization the relationships of pumas and their preyThe authors provide important new information about both the biology of pumas and their evolutionary ecology -- not only what pumas do, but why they do it. Logan and Sweanor explain how an understanding of puma evolutionary ecology can, and must, inform long-term conservation strategies. They end the book with their ideas regarding strategies for puma management and conservation, along with a consideration of the future of pumas and humans. Desert Puma makes a significant and original contribution to the science not only of pumas in desert ecosystems but of the role of top predators in all environments. It is an essential contribution to the bookshelf of any wildlife biologist or conservationist involved in large-scale land management or wildlife management.

Carnivoran Ecology

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Author : Steven W. Buskirk
Publisher : Oxford University Press
ISBN 13 : 0192677977
Total Pages : 289 pages
Book Rating : 4.1/5 (926 download)

Book Synopsis Carnivoran Ecology by : Steven W. Buskirk

Download or read book Carnivoran Ecology written by Steven W. Buskirk and published by Oxford University Press. This book was released on 2023-05-02 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: These charismatic mammals, which include dogs, cats, hyenas, weasels, mongooses, seals, sea lions and bears, have always held special importance to humans throughout history and continue to do so today. In recent decades, the emergence of new technologies has completely transformed our knowledge of how carnivorans interact with their environments and consequently reshaped our view of carnivoran ecology. This unique synthesis uses examples from a diverse and expanding carnivoran literature, drawing from all carnivoran families and spanning the world's oceans and continents, to produce a clearly written and richly illustrated book that reviews our current state of knowledge of carnivoran ecology. It addresses all levels of biological organization and function, from genes to enzymes, organisms, populations, and ecosystems. Special attention is given to how carnivoran species interact with their prey, each other, and humans. There is an emphasis on community interactions and their importance in carnivoran evolution, showing how evolutionary constraints (morphological, physiological, and behavioral) structure communities today. The book's approach is strongly comparative, contrasting herbivores with carnivores, predators with scavengers, and cats with dogs. Carnivorans play important roles in many high-profile conservation cases, either as species of concern or agents of endangerment, and their importance is demonstrated in both contexts. Carnivoran Ecology is an accessible advanced textbook aimed principally at senior undergraduate and graduate students taking courses in carnivore ecology, as well as a broad audience of professional academics (especially carnivore and mammalian biologists), researchers, and practitioners working in both governmental and non-governmental organizations. A significant secondary market will exist amongst the large amateur naturalist community including those wishing to explore the ecological and evolutionary links between domestic carnivorans (dogs, cats, ferrets etc.) and their wild counterparts.

The Starkey Project

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Author :
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (319 download)

Book Synopsis The Starkey Project by :

Download or read book The Starkey Project written by and published by . This book was released on 1997 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Yellowstone Bison

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Author : Patrick James White
Publisher :
ISBN 13 : 9780934948302
Total Pages : pages
Book Rating : 4.9/5 (483 download)

Book Synopsis Yellowstone Bison by : Patrick James White

Download or read book Yellowstone Bison written by Patrick James White and published by . This book was released on 2015-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Northern Rocky Mountain Wolf Recovery Plan

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Author : Northern Rocky Mountain Wolf Recovery Team
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.3/5 (91 download)

Book Synopsis Northern Rocky Mountain Wolf Recovery Plan by : Northern Rocky Mountain Wolf Recovery Team

Download or read book Northern Rocky Mountain Wolf Recovery Plan written by Northern Rocky Mountain Wolf Recovery Team and published by . This book was released on 1980 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Wildlife Habitats in Managed Forests

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Author : Jack Ward Thomas
Publisher :
ISBN 13 :
Total Pages : 528 pages
Book Rating : 4.:/5 (31 download)

Book Synopsis Wildlife Habitats in Managed Forests by : Jack Ward Thomas

Download or read book Wildlife Habitats in Managed Forests written by Jack Ward Thomas and published by . This book was released on 1979 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: That is what this book is about. It is a framework for planning, in which habitat is the key to managing wildlife and making forest managers accountable for their actions. This book is based on the collective knowledge of one group of resource professionals and their understanding about how wildlife relate to forest habitats. And it provides a longoverdue system for considering the impacts of changes in forest structure on all resident wildlife.

Adjusting for Radiotelemetry Error to Improve Estimates of Habitat Use

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Author : Scott L. Findholt
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (319 download)

Book Synopsis Adjusting for Radiotelemetry Error to Improve Estimates of Habitat Use by : Scott L. Findholt

Download or read book Adjusting for Radiotelemetry Error to Improve Estimates of Habitat Use written by Scott L. Findholt and published by . This book was released on 2002 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Foxes, Wolves, Jackals, and Dogs

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Author : Joshua Ross Ginsberg
Publisher : IUCN
ISBN 13 : 9782880329969
Total Pages : 124 pages
Book Rating : 4.3/5 (299 download)

Book Synopsis Foxes, Wolves, Jackals, and Dogs by : Joshua Ross Ginsberg

Download or read book Foxes, Wolves, Jackals, and Dogs written by Joshua Ross Ginsberg and published by IUCN. This book was released on 1990 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Managing Cougars in North America

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Author : Hilary S. Cooley
Publisher :
ISBN 13 : 9780974241524
Total Pages : 200 pages
Book Rating : 4.2/5 (415 download)

Book Synopsis Managing Cougars in North America by : Hilary S. Cooley

Download or read book Managing Cougars in North America written by Hilary S. Cooley and published by . This book was released on 2011-05-06 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Where Elk Roam

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Author : Bruce Smith
Publisher : Rowman & Littlefield
ISBN 13 : 076277553X
Total Pages : 275 pages
Book Rating : 4.7/5 (627 download)

Book Synopsis Where Elk Roam by : Bruce Smith

Download or read book Where Elk Roam written by Bruce Smith and published by Rowman & Littlefield. This book was released on 2011-11-08 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: An inside look at working with the majestic elk—and the controversies surrounding their conservation.

Managing California's Water

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Author : Ellen Hanak
Publisher : Public Policy Instit. of CA
ISBN 13 : 1582131414
Total Pages : 500 pages
Book Rating : 4.5/5 (821 download)

Book Synopsis Managing California's Water by : Ellen Hanak

Download or read book Managing California's Water written by Ellen Hanak and published by Public Policy Instit. of CA. This book was released on 2011 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: