Author : George A. Feldhamer
Publisher : JHU Press
Page : 1250 pages
File Size : 47,26 MB
Release : 2003-11-19
Category : Nature
ISBN : 9780801874161
Table of contents
Author :
Publisher :
Page : 92 pages
File Size : 17,29 MB
Release : 1997
Category : Biogeography
ISBN :
This volume represents a first attempt at holistically classifying and mapping ecological regions across all three countries of the North American continent. A common analytical methodology is used to examine North American ecology at multiple scales, from large continental ecosystems to subdivisions of these that correlate more detailed physical and biological settings with human activities on two levels of successively smaller units. The volume begins with an overview of North America from an ecological perspective, concepts of ecological regionalization. This is followed by descriptions of the 15 broad ecological regions, including information on physical and biological setting and human activities. The final section presents case studies in applications of the ecological characterization methodology to environmental issues. The appendix includes a list of common and scientific names of selected species characteristic of the ecological regions.
Author : Kenneth A. Logan
Publisher : Island Press
Page : 498 pages
File Size : 44,87 MB
Release : 2001-08-01
Category : Nature
ISBN : 1610910583
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.
Author : Dale E. Toweill
Publisher :
Page : 63 pages
File Size : 30,71 MB
Release : 2007-01-01
Category : Bighorn sheep
ISBN : 9781578644100
Author : N.C. Stenseth
Publisher : Springer Science & Business Media
Page : 359 pages
File Size : 46,44 MB
Release : 2012-12-06
Category : Science
ISBN : 9401123381
4.1.1 Demographic significance Confined populations grow more rapidly than populations from which dispersal is permitted (Lidicker, 1975; Krebs, 1979; Tamarin et at., 1984), and demography in island populations where dispersal is restricted differs greatly from nearby mainland populations (Lidicker, 1973; Tamarin, 1977, 1978; Gliwicz, 1980), clearly demonstrating the demographic signi ficance of dispersal. The prevalence of dispersal in rapidly expanding populations is held to be the best evidence for presaturation dispersal. Because dispersal reduces the growth rate of source populations, it is generally believed that emigration is not balanced by immigration, and that mortality of emigrants occurs as a result of movement into a 'sink' of unfavourable habitat. If such dispersal is age- or sex-biased, the demo graphy of the population is markedly affected, as a consequence of differ ences in mortality in the dispersive sex or age class. Habitat heterogeneity consequently underlies this interpretation of dispersal and its demographic consequences, although the spatial variability of environments is rarely assessed in dispersal studies.
Author : British Columbia. Ministry of Forests
Publisher :
Page : 0 pages
File Size : 39,64 MB
Release : 1999
Category : Habitat conservation
ISBN :
The Forest Practices Code guidebooks help forest resource managers plan, prescribe and implement sound forest practices that comply with the Forest Practices Code. This guidebook is designed to be a "fine filter" approach to addressing habitat requirements of critical wildlife, in addition to the "coarse filter" approach provided by the Biodiversity Guidebook and the Riparian Management Area Guidebook.
Author : Zdenek Hubálek
Publisher : Springer Science & Business Media
Page : 459 pages
File Size : 38,72 MB
Release : 2010-11-25
Category : Medical
ISBN : 9048196574
This book presents the state of art in the field of microbial zoonoses and sapronoses. It could be used as a textbook or manual in microbiology and medical zoology for students of human and veterinary medicine, including Ph.D. students, and for biomedicine scientists and medical practitioners and specialists as well. Surprisingly, severe zoonoses and sapronoses still appear that are either entirely new (e.g., SARS), newly recognized (Lyme borreliosis), resurging (West Nile fever in Europe), increasing in incidence (campylobacterosis), spatially expanding (West Nile fever in the Americas), with a changing range of hosts and/or vectors, with changing clinical manifestations or acquiring antibiotic resistance. The collective term for those diseases is (re)emerging infections, and most of them represent zoonoses and sapronoses (the rest are anthroponoses). The number of known zoonotic and sapronotic pathogens of humans is continually growing − over 800 today. In the introductory part, short characteristics are given of infectious and epidemic process, including the role of environmental factors, possibilities of their epidemiological surveillance, and control. Much emphasis is laid on ecological aspects of these diseases (haematophagous vectors and their life history; vertebrate hosts of zoonoses; habitats of the agents and their geographic distribution; natural focality of diseases). Particular zoonoses and sapronoses are then characterized in the following brief paragraphs: source of human infection; animal disease; transmission mode; human disease; epidemiology; diagnostics; therapy; geographic distribution.
Author : José R. Castelló
Publisher : Princeton University Press
Page : 665 pages
File Size : 28,87 MB
Release : 2016-04-12
Category : Nature
ISBN : 1400880653
The most comprehensive guide to the bovids of the world Bovids are a diverse group of ruminant mammals that have hooves and unbranched hollow horns. Bovids of the World is the first comprehensive field guide to cover all 279 bovid species, including antelopes, gazelles, cattle, buffaloes, sheep, and goats. From the hartebeest of Africa and the takin of Asia to the muskox of North America, bovids are among the world's most spectacular animals and this stunningly illustrated and easy-to-use field guide is an ideal way to learn more about them. The guide covers all species and subspecies of bovids described to date. It features more than 300 superb full-color plates depicting every kind of bovid, as well as detailed facing-page species accounts that describe key identification features, horn morphology, distribution, subspeciation, habitat, and conservation status in the wild. This book also shows where to observe each species and includes helpful distribution maps. Suitable for anyone with an interest in natural history, Bovids of the World is a remarkable and attractive reference, showcasing the range and beauty of these important mammals. The first comprehensive field guide to all 279 bovid species 337 full-color plates, with more than 1,500 photographs Detailed species accounts describe key identification features, distribution, subspeciation, habitat, behavior, reproduction, and conservation status Fully updated and revised taxonomy, with common and scientific names Easy-to-read distribution maps
Author :
Publisher :
Page : 76 pages
File Size : 23,36 MB
Release : 1993
Category : Competition (Biology)
ISBN :
Author : Roland Bohr
Publisher : U of Nebraska Press
Page : 446 pages
File Size : 43,64 MB
Release : 2014-05-01
Category : Social Science
ISBN : 0803254385
Gifts from the Thunder Beings examines North American Aboriginal peoples’ use of Indigenous and European distance weapons in big-game hunting and combat. Beyond the capabilities of European weapons, Aboriginal peoples’ ways of adapting and using this technology in combination with Indigenous weaponry contributed greatly to the impact these weapons had on Aboriginal cultures. This gradual transition took place from the beginning of the fur trade in the Hudson’s Bay Company trading territory to the treaty and reserve period that began in Canada in the 1870s. Technological change and the effects of European contact were not uniform throughout North America, as Roland Bohr illustrates by comparing the northern Great Plains and the Central Subarctic—two adjacent but environmentally different regions of North America—and their respective Indigenous cultures. Beginning with a brief survey of the subarctic and Northern Plains environments and the most common subsistence strategies in these regions around the time of contact, Bohr provides the context for a detailed examination of social, spiritual, and cultural aspects of bows, arrows, quivers, and firearms. His detailed analysis of the shifting usage of bows and arrows and firearms in the northern Great Plains and the Central Subarctic makes Gifts from the Thunder Beings an important addition to the canon of North American ethnology.
