Harlequin Duck Demography During Winter In Prince William Sound Alaska

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Harlequin Duck Demography During Winter in Prince William Sound, Alaska

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Author : Daniel Esler
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.E/5 ( download)

Book Synopsis Harlequin Duck Demography During Winter in Prince William Sound, Alaska by : Daniel Esler

Download or read book Harlequin Duck Demography During Winter in Prince William Sound, Alaska written by Daniel Esler and published by . This book was released on 2000 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1989 Exxon Valdez oil spill was a major perturbation of nearshore habitats of Prince William Sound, a wintering area for harlequin ducks (Histrionicus histrionicus). This research was designed to evaluate harlequin duck population recovery from the oil spill from 1995 to 1998, using a demographic approach to assess both the "product" of population changes (e.g., density differences; Chapter 4) and the demographic "processes" affecting population dynamics (e.g., survival; Chapter 3). Wintering aggregations of harlequin ducks are core population units from a population structure perspective and are largely demographically independent, due to high rates of winter site fidelity, pair formation during winter, and evidence that juveniles follow hens to wintering areas. Therefore, evaluation of population-level effects of the oil spill is appropriately directed at these wintering aggregations. We selected adult female survival as a primary demographic attribute to measure, as population dynamics of animals with life history characteristics like harlequin ducks are particularly sensitive to variation in adult female survival rates. Also, we speculated that oil spill effects during winter would be manifested as survival reductions. We found that winter densities of harlequin ducks were lower on oiled study areas than unoiled areas, after accounting for effects of habitat (Chapter 4), indicating that population recovery had not occurred. Also, we determined that adult female survival was lower on oiled areas than unoiled areas (Chapter 3), and speculated that this was related to documented oil exposure of harlequin duck populations in oiled areas coincident with our study. We also confirmed that our survival estimates were not biased by assumptions about effects of radio transmitters or fate of missing radios (Chapter 2). In Chapter 5, we reviewed all data relevant to harlequin duck recovery from the oil spill, including our demographic data, and concluded that population recovery had not occurred by 1998, deleterious effects persisted, and continued oil exposure likely was the primary constraint to full recovery. Although populations of many species may have recovered quickly from the Exxon Valdez spill, characteristics of harlequin ducks make their winter populations particularly susceptible, including their habitat associations, diet, life history. and energetics

Current Ornithology Volume 17

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Author : Charles F. Thompson
Publisher : Springer Science & Business Media
ISBN 13 : 1441964215
Total Pages : 196 pages
Book Rating : 4.4/5 (419 download)

Book Synopsis Current Ornithology Volume 17 by : Charles F. Thompson

Download or read book Current Ornithology Volume 17 written by Charles F. Thompson and published by Springer Science & Business Media. This book was released on 2010-09-09 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Ornithology publishes authoritative, up-to-date, scholarly reviews of topics selected from the full range of current research in avian biology. Topics cover the spectrum from the molecular level of organization to population biology and community ecology. The series seeks especially to review (1) fields in which an abundant recent literature will benefit from synthesis and organization, or (2) newly emerging fields that are gaining recognition as the result of recent discoveries or shifts in perspective, or (3) fields in which students of vertebrates may benefit from comparisons of birds with other classes. All chapters are invited, and authors are chosen for their leadership in the subjects under review.

Ecology and Conservation of North American Sea Ducks

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Author : Jean-Pierre L. Savard
Publisher : CRC Press
ISBN 13 : 1482248980
Total Pages : 610 pages
Book Rating : 4.4/5 (822 download)

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 610 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. Reflecting the considerable research recently conducted on this tribe, Ecology and Conservation of North American Sea Ducks examines the 15 extant species of sea ducks from North America. Chapters are organized conceptually to focus on, compare, and contrast the ecological attributes of the tribe. Experts provide in-depth treatments of a range of topics, including: Population dynamics and genetics Infectious diseases and parasites Breeding costs and cross-seasonal affects Contaminant burdens Foraging behavior and energetics Migration strategies, molt ecology, and habitat affinities and dynamics Breeding systems and reproductive behavior Harvest history The book presents a comprehensive synthesis of sea duck ecology, documents factors that have caused population declines of some species, and provides managers with measures to enhance recovery of depressed populations of sea ducks in North America. Capturing the current state of knowledge of this unique tribe, it provides a benchmark for where we are in conservation efforts and suggests future directions for researchers, managers, students, conservationists, and avian enthusiasts.

Tongass National Forest (N.F.), Lab Bay Project Area, Ketchikan Pulp Company Long-term Timber Sale Contract

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Author :
Publisher :
ISBN 13 :
Total Pages : 670 pages
Book Rating : 4.3/5 (555 download)

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Exxon Valdez Oil Spill Restoration Plan, Prince William Sound, Gulf of Alaska

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Author :
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.3/5 (555 download)

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Download or read book Exxon Valdez Oil Spill Restoration Plan, Prince William Sound, Gulf of Alaska written by and published by . This book was released on 1994 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ducks, Geese, and Swans of North America

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Author : Guy Baldassarre
Publisher : JHU Press
ISBN 13 : 1421408082
Total Pages : 1183 pages
Book Rating : 4.4/5 (214 download)

Book Synopsis Ducks, Geese, and Swans of North America by : Guy Baldassarre

Download or read book Ducks, Geese, and Swans of North America written by Guy Baldassarre and published by JHU Press. This book was released on 2014-11-15 with total page 1183 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

The North American Sea Ducks

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Author : Paul Johnsgard
Publisher : Lulu.com
ISBN 13 : 1609621069
Total Pages : 258 pages
Book Rating : 4.6/5 (96 download)

Book Synopsis The North American Sea Ducks by : Paul Johnsgard

Download or read book The North American Sea Ducks written by Paul Johnsgard and published by Lulu.com. This book was released on 2016-11-09 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 21 species of sea ducks are one of the larger subgroups (Tribe Mergini) of the waterfowl family Anatidae, and the 16 species (one historically extinct) that are native to North America represent the largest number to be found on any continent, and also the largest number of endemic sea duck species native to any continent. Although generally not important as game birds, the sea ducks include some economically important birds such as the eiders, the basis for the Arctic eiderdown industry and a historically important food source for some Native American cultures. They also include what is probably the most northerly breeding species of all waterfowl and an icon of Arctic bird life, the long-tailed duck. The sea ducks also include species having some of the most complex and diverse pair-forming postural and acoustic displays of all waterfowl (goldeneyes and bufflehead), and some of the deepest diving species of all waterfowl (scoters and long-tailed duck). Sea ducks are highly prone to population disasters caused by oil spills and other water contaminants and, like other seabirds, are among the first bird groups that are being affected by current global warming trends in polar regions. This book is an effort to summarize succinctly our current knowledge of sea duck biology and to provide a convenient survey of the vast technical literature on the group, with over 900 literature references. It also includes 90,000 words of text (more than 40 percent of which is new), 15 updated range maps, 11 black & white and 20 color photographs, over 30 ink drawings, and nearly 150 sketches. Lastly, the North American sea ducks include the now extinct Labrador duck, the only northern hemisphere waterfowl species to have gone extinct in modern times. I have gratefully reprinted a Labrador duck watercolor by Sir Peter Scott. Considering recent population crashes in other sea ducks, such as the Steller’s eider and spectacled eider, it should also offer a sobering reminder of the fragility of our natural world and its inhabitants, including us.

1997 Outer Continental Shelf (OCS (Outer Continental Shelf)) Oil and Gas Lease Sale 158, Yakutat Planning Area, Gulf of Alaska

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Author :
Publisher :
ISBN 13 :
Total Pages : 652 pages
Book Rating : 4.3/5 (555 download)

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Download or read book 1997 Outer Continental Shelf (OCS (Outer Continental Shelf)) Oil and Gas Lease Sale 158, Yakutat Planning Area, Gulf of Alaska written by and published by . This book was released on 1996 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Global Coastal Change

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Author : Ivan Valiela
Publisher : John Wiley & Sons
ISBN 13 : 144430903X
Total Pages : 376 pages
Book Rating : 4.4/5 (443 download)

Book Synopsis Global Coastal Change by : Ivan Valiela

Download or read book Global Coastal Change written by Ivan Valiela and published by John Wiley & Sons. This book was released on 2009-03-12 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global Coastal Changeprovides a comprehensive overview of the environmental factors changing the marine systems of the world including atmospheric changes, sea level rise, alterations in freshwater and sediment use and transport, toxins, overfishing, alien species, and eutrophication. Includes case studies providing real-world examples, detailed reviews of the evidence of changes and possible solutions. Brings together a wealth of important information about our changing marine environments. An invaluable reference for upper level undergraduates, graduates, and professionals interested in marine environmental science.

Draft Environmental Impact Statement for the Exxon Valdez Oil Spill Restoration Plan

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Author : Exxon Valdez Oil Spill Trustee Council
Publisher : Anchorage, Alaska : Exxon Valdez Oil Spill Trustee Council
ISBN 13 :
Total Pages : 426 pages
Book Rating : 4.3/5 (5 download)

Book Synopsis Draft Environmental Impact Statement for the Exxon Valdez Oil Spill Restoration Plan by : Exxon Valdez Oil Spill Trustee Council

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Coastal Conservation

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Author : Brooke Maslo
Publisher : Cambridge University Press
ISBN 13 : 1139867563
Total Pages : 415 pages
Book Rating : 4.1/5 (398 download)

Book Synopsis Coastal Conservation by : Brooke Maslo

Download or read book Coastal Conservation written by Brooke Maslo and published by Cambridge University Press. This book was released on 2014-03-27 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal ecosystems are centres of high biological productivity, but their conservation is often threatened by numerous and complex environmental factors. Citing examples from the major littoral habitats worldwide, such as sandy beaches, salt marshes and mangrove swamps, this text characterises the biodiversity of coastline environments and highlights important aspects of their maintenance and preservation, aided by the analysis of key representative species. Leaders in the field provide reviews of the foremost threats to coastal networks, including the effects of climate change, invasive species and major pollution incidents such as oil spills. Further discussion underscores the intricacies of measuring and managing coastline species in the field, taking into account the difficulties in quantifying biodiversity loss due to indirect cascading effects and trophic skew. Synthesising the current state of species richness with present and projected environmental pressures, the book ultimately establishes a research agenda for implementing and improving conservation practices moving forward.

Impacts of Oil Spill Disasters on Marine Habitats and Fisheries in North America

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Author : J. Brian Alford
Publisher : CRC Press
ISBN 13 : 1466557214
Total Pages : 340 pages
Book Rating : 4.4/5 (665 download)

Book Synopsis Impacts of Oil Spill Disasters on Marine Habitats and Fisheries in North America by : J. Brian Alford

Download or read book Impacts of Oil Spill Disasters on Marine Habitats and Fisheries in North America written by J. Brian Alford and published by CRC Press. This book was released on 2014-10-29 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: At an increasingly global scale, aquatic scientists are heavily entrenched in understanding the fate of marine ecosystems in the face of human-altered environments. Oil spill disasters, especially large-scale ones like the 2010 Deepwater Horizon tragedy, have left uncertain and indelible marks on marine ecosystems. Impacts of Oil Spill Disasters on Marine Habitats and Fisheries in North America contains independent scientific findings and critical reviews from experts researching the impacts of the Exxon Valdez, Ixtoc I, and Deepwater Horizon oil spills on coastal fishery resources. Comprised of three sections, this seminal work: Details the physiological effects of oil-derived compounds on fishes, presenting results from field and laboratory investigations Addresses the science of assessing the impacts of oil spills and oil response measures on coastal habitats, with an emphasis on salt-marsh ecosystems in the Gulf of Mexico Explores the quantified and potential impacts of oil spills on population and community dynamics of commercial and recreational fishery species Provides newly released results from the 25-year recovery of marine mammals, birds, and fishes following the Exxon Valdez spill Chapters discuss new techniques for collecting and processing blood samples for toxicity testing, new aerial radar techniques for detecting unseen oil on marshes, consequences of oil prevention measures (such as diverting fresh water to estuaries or building sand berms to stop oil) on coastal fishery resources, and non-traditional methods for assessing the herring stock in Prince William Sound, Alaska, USA following the Exxon Valdez disaster.

Tongass National Forest (N.F.), Upper Carroll Timber Sale, Revillagigedo Island

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Author :
Publisher :
ISBN 13 :
Total Pages : 502 pages
Book Rating : 4.3/5 (555 download)

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Tongass National Forest (N.F.), Chasina Timber Sale

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Publisher :
ISBN 13 :
Total Pages : 418 pages
Book Rating : 4.3/5 (555 download)

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Tongass National Forest (N.F.), Ketchikan Pulp Company Long-term Timber Sale Contract, Polk Inlet

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Author :
Publisher :
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.3/5 (555 download)

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Tongass National Forest (N.F.), Central Prince of Wales, Ketchikan Pulp Company Long-term Timber Sale Contract

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Author :
Publisher :
ISBN 13 :
Total Pages : 804 pages
Book Rating : 4.3/5 (555 download)

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Tongass National Forest (N.F.), Ketchikan Pulp Company Long-term Timber Sale Contract, North Revilla

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Author :
Publisher :
ISBN 13 :
Total Pages : 436 pages
Book Rating : 4.3/5 (555 download)

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