Feeding Behavior Body Condition And Oil Contamination Of Wintering Harlequin Ducks Histrionicus Histrionicus At Shemya Island Alaska

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Harlequin Duck Demography During Winter in Prince William Sound, Alaska

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

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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

Seabirds of the Pacific Northwest

Author :
Publisher : Government Printing Office
ISBN 13 : 9780160942273
Total Pages : 16 pages
Book Rating : 4.9/5 (422 download)

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Download or read book Seabirds of the Pacific Northwest written by and published by Government Printing Office. This book was released on 2008 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Seabirds

Author : Mark J. Rauzon
Publisher :
ISBN 13 : 9780531202463
Total Pages : 72 pages
Book Rating : 4.2/5 (24 download)

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Book Synopsis Seabirds by : Mark J. Rauzon

Download or read book Seabirds written by Mark J. Rauzon and published by . This book was released on 1996 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes different kinds of sea birds, including gulls, terns, albatrosses, cormorants, pelicans, and penguins.

Drafting a Conservation Blueprint

Author : Craig Groves
Publisher :
ISBN 13 :
Total Pages : 504 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Drafting a Conservation Blueprint by : Craig Groves

Download or read book Drafting a Conservation Blueprint written by Craig Groves and published by . This book was released on 2003-05-16 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drafting a Conservation Blueprint lays out for the first time in book form a step-by-step planning process for conserving the biological diversity of entire regions. In an engaging and accessible style, the author explains how to develop a regional conservation plan and offers experience-based guidance that brings together relevant information from the fields of ecology, conservation biology, planning, and policy. Individual chapters outline and discuss the main steps of the planning process, including: • an overview of the planning framework • selecting conservation targets and setting goals • assessing existing conservation areas and filling information gaps • assessing population viability and ecological integrity • selecting and designing a portfolio of conservation areas • assessing threats and setting priorities A concluding section offers advice on turning conservation plans into action, along with specific examples from around the world. The book brings together a wide range of information about conservation planning that is grounded in both a strong scientific foundation and in the realities of implementation.

A Guide to Bird Finding in Kansas and Western Missouri

Author : John L. Zimmerman
Publisher :
ISBN 13 : 9780700603657
Total Pages : 0 pages
Book Rating : 4.6/5 (36 download)

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Book Synopsis A Guide to Bird Finding in Kansas and Western Missouri by : John L. Zimmerman

Download or read book A Guide to Bird Finding in Kansas and Western Missouri written by John L. Zimmerman and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kansas and western Missouri are astonishingly rich in birdlife. Located in the very center of the North American continent, the area is home to most of the eastern bird fauna and many of the western species, and even hosts occasional visitors from the far north. Over 400 species of birds have been recorded in Kansas alone, an abundance that places it among the top five birding states in the country.

The Status, Ecology and Conservation of Marine Birds of the North Pacific

Author : Kees Vermeer
Publisher :
ISBN 13 : 9780662203599
Total Pages : 263 pages
Book Rating : 4.2/5 (35 download)

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Book Synopsis The Status, Ecology and Conservation of Marine Birds of the North Pacific by : Kees Vermeer

Download or read book The Status, Ecology and Conservation of Marine Birds of the North Pacific written by Kees Vermeer and published by . This book was released on 1993 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Seabird Bycatch

Author : Edward F. Melvin
Publisher : Alaska Sea Grant College Program
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Seabird Bycatch by : Edward F. Melvin

Download or read book Seabird Bycatch written by Edward F. Melvin and published by Alaska Sea Grant College Program. This book was released on 2001 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seabird Bycatch significantly adds to the knowledge base of seabird mortality in commercial fisheries, and emphasizes the importance of comprehensive solutions. The product of a 1999 symposium held by the Pacific Seabird Group, Seabird Bycatch is a response to escalating bycatch, a global conservation and fisheries management issue.

Auks at Sea

Author : Pacific Seabird Group. International Symposium
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Auks at Sea by : Pacific Seabird Group. International Symposium

Download or read book Auks at Sea written by Pacific Seabird Group. International Symposium and published by . This book was released on 1990 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Movement Patterns and Population Structure of Harlequin Ducks Wintering in the Strait of Georgia, British Columbia

Author : Heidi M. Regehr
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Movement Patterns and Population Structure of Harlequin Ducks Wintering in the Strait of Georgia, British Columbia by : Heidi M. Regehr

Download or read book Movement Patterns and Population Structure of Harlequin Ducks Wintering in the Strait of Georgia, British Columbia written by Heidi M. Regehr and published by . This book was released on 2003 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: I investigated winter movement patterns and population structure of Harlequin Ducks (Histrionicus histrioniczrs) in the Strait of Georgia, British Colunlbia, Canada. Because of winter pairing, delayed maturation, and long-term pair bonds, movement patterns at wintering areas, particularly those of young birds that have not yet paired, are important to population structure. I used nasal- and radio-marking to determine movement distances, and multi-stratum models In capture-mark-recapture analysis to estimate movement rates among locations. I provide evidence that Harlequin Duck broods accompany their mothers from breeding streams to coastal wintering areas. Behavioural observations of family-like groups at the coast, and genetic analysis of blood samples from putative family members, suggested that observed groups were true families. Family migration in combination with philopatry, in the absence of dispersal, would lead to juvenile recruitment into the wintering populations of their relatives, and potentially to genetic and demographically isolated populations. Winter movement distances and rates did not differ by sex, likely due to extreme philopatry of paired males, slightly reduced philopatry of unpaired males, and intermediate philopatry of previously paired females. However, they did differ by age, with young birds in their first and second winters dispersing greater distances and at higher rates than older individuals. Isolation by distance and stepping stone gene flow models generated estimates for the among population component of genetic variance of less than 1% for the Strait of Georgia. Thus, due to dispersal of young individuals, which counteracts the isolating effects of philopatry and family migration, groups of Harlequin Ducks are unlikely to be genetically distinct at this scale. However, estimates from the stepping stone model for an increased number of colonies did suggest that, due to their linear coastal distribution, genetic differences could develop at the scale of their entire west coast of North America wintering range. Low movement rates between the northern and southern Strait of Georgia suggested that groups of wintering birds may be demographically distinct at this scale, and dispersal by both sexes indicated that recolonization or rescue of extinct or reduced groups is likely.

National Recovery Plan for the Harlequin Duck in Eastern North America

Author : RENEW (Canada). Harlequin Duck (eastern North American population) Recovery Team
Publisher :
ISBN 13 : 9780662209621
Total Pages : 30 pages
Book Rating : 4.2/5 (96 download)

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Book Synopsis National Recovery Plan for the Harlequin Duck in Eastern North America by : RENEW (Canada). Harlequin Duck (eastern North American population) Recovery Team

Download or read book National Recovery Plan for the Harlequin Duck in Eastern North America written by RENEW (Canada). Harlequin Duck (eastern North American population) Recovery Team and published by . This book was released on 1995 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ecology and Conservation of North American Sea Ducks

Author : Jean-Pierre L. Savard
Publisher : CRC Press
ISBN 13 : 1482248980
Total Pages : 604 pages
Book Rating : 4.4/5 (822 download)

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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

Timing of Pairing in Harlequin Ducks

Author : Michael S. Rodway
Publisher : Library and Archives Canada = Bibliothèque et Archives Canada
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Timing of Pairing in Harlequin Ducks by : Michael S. Rodway

Download or read book Timing of Pairing in Harlequin Ducks written by Michael S. Rodway and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2003 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Harlequin Duck Surveys in Western Montana

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Harlequin Duck Surveys in Western Montana by :

Download or read book Harlequin Duck Surveys in Western Montana written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Population Genetic Structure, Kinship, and Social Associations in Three Harlequin Duck (Histrionicus Histrionicus) Breeding Subpopulations

Download Population Genetic Structure, Kinship, and Social Associations in Three Harlequin Duck (Histrionicus Histrionicus) Breeding Subpopulations PDF Online Free

Author : Margaret Elizabeth Brown (M.S. in ecology)
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (58 download)

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Book Synopsis Population Genetic Structure, Kinship, and Social Associations in Three Harlequin Duck (Histrionicus Histrionicus) Breeding Subpopulations by : Margaret Elizabeth Brown (M.S. in ecology)

Download or read book Population Genetic Structure, Kinship, and Social Associations in Three Harlequin Duck (Histrionicus Histrionicus) Breeding Subpopulations written by Margaret Elizabeth Brown (M.S. in ecology) and published by . This book was released on 1998 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Long-term Monitoring: Lingering Oil, Evaluating Chronic Exposure of Harlequin Ducks and Sea Otters to Lingering Exxon Valdez Oil in Western Prince William Sound

Download Long-term Monitoring: Lingering Oil, Evaluating Chronic Exposure of Harlequin Ducks and Sea Otters to Lingering Exxon Valdez Oil in Western Prince William Sound PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (924 download)

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Book Synopsis Long-term Monitoring: Lingering Oil, Evaluating Chronic Exposure of Harlequin Ducks and Sea Otters to Lingering Exxon Valdez Oil in Western Prince William Sound by :

Download or read book Long-term Monitoring: Lingering Oil, Evaluating Chronic Exposure of Harlequin Ducks and Sea Otters to Lingering Exxon Valdez Oil in Western Prince William Sound written by and published by . This book was released on 2015 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part one of the report describes the study of cytochrome P4501A induction in harlequin ducks wintering in Prince William Sound over time as it relates to exposure to residual oil from the Exxon Valdez oil spill. Part two of the report describes the study of gene transcription patterns in sea otters in western Prince William Sound in order to determine the status of sea otter recovery after the 1989 oil spill.

Status of the Harlequin Duck (Histrionicus Histrionicus) in Alberta

Author : N. Beth (Norma Beth) MacCallum
Publisher :
ISBN 13 : 9780778517801
Total Pages : 38 pages
Book Rating : 4.5/5 (178 download)

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Book Synopsis Status of the Harlequin Duck (Histrionicus Histrionicus) in Alberta by : N. Beth (Norma Beth) MacCallum

Download or read book Status of the Harlequin Duck (Histrionicus Histrionicus) in Alberta written by N. Beth (Norma Beth) MacCallum and published by . This book was released on 2001 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Results of the 1990 Survey for Harlequin Ducks (Histrionicus Histrionicus) on the Kootenai National Forest, Montana and Parts of the Lolo National Forest, Montana

Download Results of the 1990 Survey for Harlequin Ducks (Histrionicus Histrionicus) on the Kootenai National Forest, Montana and Parts of the Lolo National Forest, Montana PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Results of the 1990 Survey for Harlequin Ducks (Histrionicus Histrionicus) on the Kootenai National Forest, Montana and Parts of the Lolo National Forest, Montana by :

Download or read book Results of the 1990 Survey for Harlequin Ducks (Histrionicus Histrionicus) on the Kootenai National Forest, Montana and Parts of the Lolo National Forest, Montana written by and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: