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Author:
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 718
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 718
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ISBN:
Category : Landscape assessment
Languages : en
Pages : 814
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Category :
Languages : en
Pages : 72
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Author: Paul Johnsgard
Publisher: Lulu.com
ISBN: 1609620941
Category : Nature
Languages : en
Pages : 161
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The eight currently recognized species of North American geese are part of a familiar group of birds collectively called waterfowl, all of which are smaller than swans and generally larger than ducks. They include the most popular of our aquatic gamebirds, with several million shot each year by sport hunters. Our two most abundant waterfowl, the Canada goose and snow goose, have populations collectively totaling about 15 million individuals. Like swans, the lifelong pairbonding of geese, their familial care, and prolonged social attachment to their offspring are legendary. Their seasonal migratory flights sometimes span thousands of miles, and the sight of their long, wavering flight formations are as much the symbols of seasonal change as are the spring songs of cardinals or the appearance of autumnal leaf colors. This book describes each species' geographic range and subspecies, its identification traits, weights and measurements, and criteria for its age and sex determination. Ecological and behavioral information includes each species' breeding and wintering habitats, its foods and foraging behavior, its local and long distance movements, and its relationships with other species. Reproductive information includes each species' age of maturity, pair-bond pattern, pair-forming behaviors, usual clutch sizes and incubation periods, brooding behavior, and postbreeding behavior. Mortality sources and rates of egg, young, and adult losses are also summarized, and each species' past and current North American populations are estimated. In addition to a text of nearly 60,000 words, the book includes 8 maps, 21 line drawings, and 28 photographs by the author, as well as more than 700 literature citations.
Author: Paul Johnsgard
Publisher: Lulu.com
ISBN: 1609621093
Category : Nature
Languages : en
Pages : 229
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This volume, the fourth in a series of books that collectively update and expand P.A. Johnsgard's 1975 The Waterfowl of North America, summarizes research findings on this economically and ecologically important group of waterfowl. The volume includes the mostly tropical perching duck tribe Cairinini, of which two species, the muscovy duck and the wood duck, are representatives. Both species are adapted for foraging on the water surface, mostly on plant materials, but typically perch in trees and nest in elevated tree cavities or other elevated recesses. This volume also includes the dabbling, or surface-feeding, duck tribe Anatini, a large assemblage of duck species that mainly forage on the water surface but nest on the ground, or only very rarely in elevated locations. Of this tribe, 12 species that regularly breed in North America are included, among them such familiar species as mallards, wigeons, pintails, and teal. Descriptive accounts of the distributions, populations, ecologies, social-sexual behaviors, and breeding biology of all these species are provided, together with distribution maps. Five additional Eurasian and West Indian species have been reported several times in North America; these have been included with more abbreviated accounts, but all 17 species are illustrated by drawings, photographs, or both. The text includes about 84,000 words and contains more than 1,000 references. There are also 12 distribution maps, 21 drawings, 28 photographic plates, and 58 anatomical or behavioral sketches.
Author: T. W. Hoekstra
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 12
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Author: Raymond S. Nickerson
Publisher: Psychology Press
ISBN: 1135638918
Category : Psychology
Languages : en
Pages : 329
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This book stimulates thinking on the topic of detrimental environmental change and how research psychologists can help to address the problem. In addition to reporting environmentally relevant psychological research, the author identifies the most pressing questions from an environmental point of view. Psychology and Environmental Change: *focuses on ways in which human behavior contributes to the problem; *deals with the assessment and change of attitudes and with studies of change of behavior; *proposes ways in which psychological research can contribute to making technology and its products more environmentally benign; and *introduces topics such as consumption, risk assessment, cost-benefit and tradeoff analyses, competition, negotiation, and policymaking, and how they relate to the objective of protecting the environment.
Author: Michael Usher
Publisher: Springer Science & Business Media
ISBN: 9400940912
Category : Science
Languages : en
Pages : 329
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In the mid 1970s two events led me to get to know the Yorkshire Dales better than I had previously. Since 1964 I had been to the Malham Tarn Field Centre with groups of students, first from the University of Edinburgh and then from the University of York, and my family very much enjoyed the summer days we spent amid this magnificent hill scenery. In 1976, the British Ecological Society and the National Trust jointly worked on a survey of the biological interest of the National Trust properties of the Kent, East Anglian and Yorkshire Regions. Malham Tarn itself, and the surrounding farms, formed one of the twenty properties of the Yorkshire Region. I spent the bank holiday, that commemorated the Queen's Silver Jubilee, at Malham, looking fairly closely at the National Trust's landholding there. Miss Sarah Priest, who also looked at the National Trust properties, and I produced a report in late 1977, attempting both to describe and to evaluate the nature resources of the National Trust in Yorkshire. In the following year, 1978, the Nature Conservancy Council wanted to survey the whole of the upland area that was known as the Malhaml Arncliffe SSSI (Site of Special Scientific Interest). A contract to look at such an exciting area, considering where boundaries should go, and looking to see if there were important areas of habitat that should be brought within the SSSI, was a superb practical antidote to an office in the University.
Author: Clark E. Adams
Publisher: CRC Press
ISBN: 1466521279
Category : Nature
Languages : en
Pages : 448
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Book Description
When the first edition of Urban Wildlife Management was published two years ago, it provided conservationists, ecologists, and wildlife professionals with a welcome shift in the way that interactions between humans and wildlife were viewed and managed. Instead of focusing on ways to evict or eradicate wildlife encroached on by urban development, this unique work took a holistic, ecosystems approach. Gathering information from more than five hundred academic sources and the popular media, this book educated us on the complete nature of the problem. See what's new in the Second Edition: New information garnered from secondary data sets Added contributions from an extended list of leading wildlife specialists Original research conducted by the authors and their students New chapters on urban soils, urban waters, and zoonotic diseases More perspective essays and case studies Single species profiles in each chapter that focus on management issues Numerous tables examining trends by species and by region Through discussions of past and present approaches in the United States, the book explores the changing landscape of wildlife management and future approaches. Urban habitats and hazards are defined in terms of green and gray spaces. Sociopolitical issues are discussed in terms of wildlife management, stakeholder responsibilities, and legal considerations. And wildlife are viewed as adaptive inhabitants of an evolving ecosystem rather than as interlopers in a humans only world. The author maintains a blog exploring wildlife in our own backyard.
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Category : Animal radio tracking
Languages : en
Pages : 84
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