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Population Dynamics Of Greater Scaup Breeding On The Yukon Kuskokwimm Delta Alaska
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Book Synopsis Population Dynamics of Greater Scaup Breeding on the Yukon-Kuskokwim Delta, Alaska by : Paul Leroy Flint
Download or read book Population Dynamics of Greater Scaup Breeding on the Yukon-Kuskokwim Delta, Alaska written by Paul Leroy Flint and published by . This book was released on 2006 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Populations of greater scaup (Aythya marila) remained relatively stable during a period when populations of lesser scaup (A. affinis) have declined from historic levels. To assist in describing these differences in population trends, from 1991 through 2000, we studied survival, nesting, ecology, and productivity of greater scaup on the Yukon-Kuskokwim Delta (Y-K Delta), Alaska, to develop a model of population dynamics. We located nests, radio-marked females for renesting studies, estimated duckling survival, and leg-banded females to examine nest site fidelity and annual survival"--Page 1.
Book Synopsis Population Dynamics of the Greater Scaup Breeding on the Yukon-Kuskokwin Delta, Alaska by :
Download or read book Population Dynamics of the Greater Scaup Breeding on the Yukon-Kuskokwin Delta, Alaska written by and published by . This book was released on 2006 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Dynamics of Greater Scaup Breeding on the Yukon-Kuskokwim Delta by :
Download or read book Population Dynamics of Greater Scaup Breeding on the Yukon-Kuskokwim Delta written by and published by . This book was released on 2006 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Dynamics of Greater Scaup Breeding on the Yukon-Kuskokwimm Delta, Alaska by : Paul L. Flint
Download or read book Population Dynamics of Greater Scaup Breeding on the Yukon-Kuskokwimm Delta, Alaska written by Paul L. Flint and published by . This book was released on 2006 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife monographs written by and published by . This book was released on 2006 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Ecology of Breeding Pacific Common Eiders on the Yukon-Kuskokwim Delta, Alaska by : Heather Marie Wilson
Download or read book Population Ecology of Breeding Pacific Common Eiders on the Yukon-Kuskokwim Delta, Alaska written by Heather Marie Wilson and published by . This book was released on 2012 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Ecology of Breeding Pacific Common Eiders on the Yukon-Kuskokwim Delta, Alaska by : Heather Marie Wilson
Download or read book Population Ecology of Breeding Pacific Common Eiders on the Yukon-Kuskokwim Delta, Alaska written by Heather Marie Wilson and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Populations of Pacific common eiders (Somateria mollissima v-nigrum) on the Yuko-Kuskokwim Delta (YKD) in western Alaska declined by 50-90% from 1957 to 1992 and then stabilized at reduced numbers from the early 1990s to the present. We investigated the underlying processes affecting their population dynamics by collection and analysis of demographic data from Pacific common eiders at 3 sites on the YKD (1991-2004) for 29 site-years. We examined variation in components of reproduction, tested hypotheses about the influence of specific ecological factors on life-history variables, and investigated their relative contributions to local population dynamics"--page 1.
Book Synopsis Ducks, Geese, and Swans of North America by : Guy A. Baldassarre
Download or read book Ducks, Geese, and Swans of North America written by Guy A. Baldassarre and published by JHU Press. This book was released on 2014 with total page 1183 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 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. Guy Baldassarre has hit the target. His remake of the Kortright/Bellrose classic provides good biological descriptions, wonderful photographs and illustrations, and easy-to-understand information about waterfowl. I would encourage every hunter and enthusiast to have these books as an educational guide to waterfowl and their needs.--H. Dale Hall, CEO, Ducks Unlimited, Inc. When, as an eleven-year-old in 1942, I read F. H. Kortright's first edition of this book, it altered the trajectory of my life. Every subsequent edition, including this latest update by Guy Baldassarre, has improved the landmark reference. I can't imagine that anyone interested in waterfowl or wetlands can live without this indispensable book.--Paul A. Johnsgard, University of Nebraska-Lincoln Creating a brand-new version of such a timeless and previously revised classic is a risky venture indeed, but nobody could be better suited for this monumental task than Guy Baldassarre. He has created a stunning new classic, at once magnificent in its visual appeal and truly comprehensive in its scientific breadth and depth. Hats off to Guy for dedicating himself to this project with such obvious passion, patience, and skill. This book absolutely belongs on the shelf or coffee table of anyone who has ever marveled at waterfowl, whether through their binoculars or from inside the duck blind.--John W. Fitzpatrick, Cornell Laboratory of Ornithology Guy Baldassarre was a professor of wildlife ecology at the State University of New York College of Environmental Science and Forestry in Syracuse until his death in 2012. He is the coauthor of the textbook, Waterfowl Ecology and Management. Johns Hopkins University Press Baltimore www.press.jhu.edu This product consists of two volumes, packaged in a slipcase along with a CD containing references and additional maps. ISBN 13: 978-1-4214-0751-7 ISBN 10: 1-4214-0751-5 [Use barcode for ISBN 13: 978-1-4214-0751-7] Cover design: Cover illustration: Northern Pintail. GaryKramer.net Author photo: HOLD SPACE FOR AUTHOR PHOTO X: \marketing\author photos --John W. Fitzpatrick, Cornell Lab of Ornithology "Midwest Book Review"
Book Synopsis Population Ecology of Pacific Common Eiders on the Yukon-Kuskokwim Delta, Alaska by : Heather Marie Wilson
Download or read book Population Ecology of Pacific Common Eiders on the Yukon-Kuskokwim Delta, Alaska written by Heather Marie Wilson and published by . This book was released on 2007 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of ecological factors that influence birth, death, immigration, and emigration provide insight into natural selection and population dynamics. Populations of Pacific common eiders (Somateria mollissima v-nigrum) on the Yukon-Kuskokwim Delta (YKD) in western Alaska declined by 50-90% from 1957 to 1992 and then stabilized at reduced numbers from the early 1990's to the present. This study investigates the primary underlying processes affecting population dynamics of Pacific common eiders, with the goals of understanding factors that may have led to the observed decline and subsequent stabilization, and providing tools from which conservation, management, and recommendations for future research can be drawn.
Book Synopsis Physiological Adaptations for Breeding in Birds by : Tony D. Williams
Download or read book Physiological Adaptations for Breeding in Birds written by Tony D. Williams and published by Princeton University Press. This book was released on 2012-08-05 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physiological Adaptations for Breeding in Birds is the most current and comprehensive account of research on avian reproduction. It develops two unique themes: the consideration of female avian reproductive physiology and ecology, and an emphasis on individual variation in life-history traits. Tony Williams investigates the physiological, metabolic, energetic, and hormonal mechanisms that underpin individual variation in the key female-specific reproductive traits and the trade-offs between these traits that determine variation in fitness. The core of the book deals with the avian reproductive cycle, from seasonal gonadal development, through egg laying and incubation, to chick rearing. Reproduction is considered in the context of the annual cycle and through an individual's entire life history. The book focuses on timing of breeding, clutch size, egg size and egg quality, and parental care. It also provides a primer on female reproductive physiology and considers trade-offs and carryover effects between reproduction and other life-history stages. In each chapter, Williams describes individual variation in the trait of interest and the evolutionary context for trait variation. He argues that there is only a rudimentary, and in some cases nonexistent, understanding of the physiological mechanisms that underpin individual variation in the major reproductive life-history traits, and that research efforts should refocus on these key unresolved problems by incorporating detailed physiological studies into existing long-term population studies, generating a new synthesis of physiology, ecology, and evolutionary biology.
Book Synopsis The North American Whistling-Ducks, Pochards, and Stifftails by : Paul Johnsgard
Download or read book The North American Whistling-Ducks, Pochards, and Stifftails written by Paul Johnsgard and published by Lulu.com. This book was released on 2017-03-24 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the 12 species representing three waterfowl tribes described in this volume are not closely related, they fortuitously provide an instructive example of adaptive evolutionary radiation within the much larger waterfowl lineage (the family Anatidae), especially as to their divergent morphologies, life histories, and social behaviors. The whistling-ducks (Dendrocygna), with three known North American species, are notable for their permanent pair-bonds, extended biparental family care, and strong social cohesion. In contrast, males of the five typical pochards of North American diving ducks (Aythya) establish monogamous pair-bonds that are maintained only long enough to assure that the female's eggs are fertilized. The endpoint of this behavioral gradient, promiscuity or polygyny, exists among at least some of the typical stifftails (Oxyura). Such diverse reproductive strategies have exerted powerful evolutionary influences on interspecies variations in sexual dimorphism, sexual behavior, anatomy, ecology, and other traits. This volume includes more than 63,000 words, plus some 200 maps, photos, drawings, and sketches, and nearly 650 literature citations. It is the last of five volumes that describe all 55 waterfowl species that have been historically documented in North America; collectively, the volumes total over 300,000 words, with nearly 3,000 literature citations, and more than 600 maps, photos, drawings, and sketches.
Book Synopsis Breeding Ecology and Fasting Tolerance of Scaup and Other Ducks in the Boreal Forest of Alaska by : Kate H. Martin
Download or read book Breeding Ecology and Fasting Tolerance of Scaup and Other Ducks in the Boreal Forest of Alaska written by Kate H. Martin and published by . This book was released on 2007 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Information on the breeding ecology of boreal forest ducks is lacking, despite management concern for species such as the lesser scaup (Aythya affinis), whose population has declined markedly since the 1980s. The mechanisms impacting population growth of scaup, and which component of their population dynamics is most affected, are unknown. Previous investigators hypothesized that food deprivation in the spring may reduce breeding success. My objectives were to: 1) examine reproductive parameters of lesser scaup and other ducks on the Yukon Flats in interior Alaska, and 2) measure the tolerance of captive scaup to fasting, in comparison to sympatric Northern shovelers (Anas clypeata) and American wigeon (Anas americana). Although breeding probability of paired females was assumed to be 1.0, the breeding probability of paired female scaup was between 0.12 (SE = 0.05, n=67) to 0.68 (SE = 0.08, n=37), and was positively related to body mass. These results suggest that managers may overestimate the productivity of boreal ducks using traditional survey methods. In addition, captive female scaup completely recovered from a loss of 11% body mass in only four days, suggesting that mass loss can be rapidly reversed, and may be able to obtain the body condition required for reproduction, if food supplies are adequate"--Leaf iii.
Book Synopsis Waterfowl Populations, Production and Habitat Ecology on the Yukon-Kuskokwim Delta, Alaska by : Peter Glenn Mickelson
Download or read book Waterfowl Populations, Production and Habitat Ecology on the Yukon-Kuskokwim Delta, Alaska written by Peter Glenn Mickelson and published by . This book was released on 1971 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology and Conservation of North American Sea Ducks by : Jean-Pierre L. Savard
Download or read book Ecology and Conservation of North American Sea Ducks written by Jean-Pierre L. Savard and published by CRC Press. This book was released on 2015-04-13 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Waterfowl Populations, Production and Habitat Ecology on the Yukon-Kuskokwim Delta, Alaska by : David I. Eisenhauer
Download or read book Waterfowl Populations, Production and Habitat Ecology on the Yukon-Kuskokwim Delta, Alaska written by David I. Eisenhauer and published by . This book was released on 1971 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis How to Write and Illustrate a Scientific Paper by : Björn Gustavii
Download or read book How to Write and Illustrate a Scientific Paper written by Björn Gustavii and published by Cambridge University Press. This book was released on 2017-02-16 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise and easy-to-read guide to writing and illustrating a scientific paper, detailing examples of good versus bad practice.
Book Synopsis Texas Waterfowl by : William P. Johnson
Download or read book Texas Waterfowl written by William P. Johnson and published by Texas A&M University Press. This book was released on 2013-01-18 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this beautifully illustrated guide, two practicing wildlife biologists describe the life histories of forty-five species of ducks, geese, and swans that occur in Texas. For common species and those that breed in the state, each account begins with an interesting fact (such as, “Red-breasted Mergansers have been clocked at over 80 mph, the fastest recorded flight speed for a duck . . .”) and provides information on Texas distribution and harvest, population status, diet, range and habitats, reproduction, and appearance. Exquisite photographs, informative distribution maps, and a helpful source list accompany the species descriptions, and the book offers a glossary and full bibliography for those who want to explore the literature further. With the degradation and disappearance of the inland and coastal habitats that these birds depend upon, the natural history of these waterfowl species provides a vital reminder of the interconnectedness and crucial importance of all wetlands. Birders, biologists, landowners, hunters, outdoor enthusiasts, and all those interested in the health and preservation of our coastal and inland wetland resources will enjoy and learn from this book.
