Waterfowl Population Status
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Page : 176 pages
File Size : 31,13 MB
Release : 2000
Category : Waterfowl
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Page : 176 pages
File Size : 31,13 MB
Release : 2000
Category : Waterfowl
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Page : 756 pages
File Size : 44,90 MB
Release : 2005
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Page : 782 pages
File Size : 30,58 MB
Release : 2004
Category : Government publications
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Author : Guy Baldassarre
Publisher : JHU Press
Page : 1183 pages
File Size : 41,95 MB
Release : 2014-11-15
Category : Science
ISBN : 1421408082
The best-selling and authoritative reference book on waterfowl has been fully revised and updated by one of the world’s most respected waterfowl biologists. Honorable Mention for the PROSE Award for Excellence, Multivolume/Science of the Association of American Publishers Ducks, Geese, and Swans of North America has been hailed as a classic since the first edition was published in 1942. A must-have for professional biologists, birders, waterfowl hunters, decoy collectors, and wildlife managers, this fully revised and updated edition provides definitive information on the continent's forty-six species. Maps of both winter and breeding ranges are presented with stunning images by top waterfowl photographers and the acclaimed original artwork of Robert W. (Bob) Hines. Originally authored by F. H. Kortright and later revised by Frank Bellrose, this latest edition, which has been meticulously updated by renowned waterfowl biologist Guy Baldassarre, continues the legacy of esteemed authors. Each species account contains in-depth sections on: • identification • distribution • migration behavior • habitat • population status • breeding biology • rearing of young • recruitment and survival • food habits and feeding ecology • molts and plumages • conservation and management To facilitate identification, the species accounts also include detailed illustrations of wings. An appendix contains comparative illustrations of ducklings, goslings, and cygnets. This edition of Ducks, Geese, and Swans consists of two volumes, printed in full color, and packaged in a slipcase, along with a CD containing references and additional maps.
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Page : 262 pages
File Size : 37,17 MB
Release : 2007
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Page : 56 pages
File Size : 15,27 MB
Release : 2002
Category : Waterfowl
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Page : 446 pages
File Size : 17,22 MB
Release : 2007
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Author : Jean-Pierre L. Savard
Publisher : CRC Press
Page : 604 pages
File Size : 15,85 MB
Release : 2015-04-13
Category : Nature
ISBN : 1482248980
The past decade has seen a huge increase in the interest and attention directed toward sea ducks, the Mergini tribe. This has been inspired, in large part, by the conservation concerns associated with numerical declines in several sea duck species and populations, as well as a growing appreciation for their interesting ecological attributes. Reflec
Author : Simon Delany
Publisher :
Page : 252 pages
File Size : 11,89 MB
Release : 2006
Category : Bird populations
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Author : Richard J. Hobbs
Publisher : Island Press
Page : 366 pages
File Size : 24,17 MB
Release : 2013-03-19
Category : Science
ISBN : 1610911385
As scientific understanding about ecological processes has grown, the idea that ecosystem dynamics are complex, nonlinear, and often unpredictable has gained prominence. Of particular importance is the idea that rather than following an inevitable progression toward an ultimate endpoint, some ecosystems may occur in a number of states depending on past and present ecological conditions. The emerging idea of “restoration thresholds” also enables scientists to recognize when ecological systems are likely to recover on their own and when active restoration efforts are needed. Conceptual models based on alternative stable states and restoration thresholds can help inform restoration efforts. New Models for Ecosystem Dynamics and Restoration brings together leading experts from around the world to explore how conceptual models of ecosystem dynamics can be applied to the recovery of degraded systems and how recent advances in our understanding of ecosystem and landscape dynamics can be translated into conceptual and practical frameworks for restoration. In the first part of the book, background chapters present and discuss the basic concepts and models and explore the implications of new scientific research on restoration practice. The second part considers the dynamics and restoration of different ecosystems, ranging from arid lands to grasslands, woodlands, and savannahs, to forests and wetlands, to production landscapes. A summary chapter by the editors discusses the implications of theory and practice of the ideas described in preceding chapters. New Models for Ecosystem Dynamics and Restoration aims to widen the scope and increase the application of threshold models by critiquing their application in a wide range of ecosystem types. It will also help scientists and restorationists correctly diagnose ecosystem damage, identify restoration thresholds, and develop corrective methodologies that can overcome such thresholds.