Winter Distributions Of Thick Billed Murres From The Eastern Canadian Arctic And Western Greenland In Relation To Age And Time Of Year

Author : Garry M. Donaldson,Canadian Wildlife Service
Publisher : Canadian Museum of Civilization/Musee Canadien Des Civilisations
Page : 32 pages
File Size : 44,9 Mb
Release : 1997
Category : Nature
ISBN : MINN:31951D00363959M

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Winter Distributions of Thick-billed Murres from the Eastern Canadian Arctic and Western Greenland in Relation to Age and Time of Year by Garry M. Donaldson,Canadian Wildlife Service Pdf

Thick-billed Murres (Uria lomvia from colonies in the eastern Canadian Arctic and West Greenland winter in large numbers off the coast of Newfoundland, where they are subjected to heavy hunting pressure. Some of these colonies, especially in Greenland, have declined over the past 50 years, and this has raised concerns over the efects of current harvest levels in Newfoundland. We analyzed the recoveries of birds banded at Canadian and Greenland colonies to determine where and when birds of different ages and from different colonies were killed. We dealt with recoveries for the period prior to recent restrictions (winter of 1993-1994 onwards), which allowed us to compare recoveries from different geographical areas over the whole period when the birds are present off Newfoundland.

Author : Canada. Environment Canada,Canadian Wildlife Service,Chardine, John W,A.J. (Anthony J.) Gaston,Donaldson, Garry M
Publisher : Minister of Public Works and Government Services
Page : 616 pages
File Size : 54,8 Mb
Release : 1957
Category : Wildlife research
ISBN : WISC:89058788258

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Winter Distributions of Thick-billed Murres from the Eastern Canadian Arctic and Western Greenland in Relation to Age and Time of Year by Canada. Environment Canada,Canadian Wildlife Service,Chardine, John W,A.J. (Anthony J.) Gaston,Donaldson, Garry M Pdf

Author : Anonim
Publisher : Unknown
Page : 266 pages
File Size : 40,7 Mb
Release : 1998
Category : Forests and forestry
ISBN : CORNELL:31924086751462

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Proceedings RMRS. by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 272 pages
File Size : 42,5 Mb
Release : 1998
Category : Biodiversity
ISBN : UOM:39015051608241

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Personal, Societal, and Ecological Values of Wilderness by Anonim Pdf

Author : Brian B. Wilks
Publisher : University of Toronto Press
Page : 664 pages
File Size : 48,7 Mb
Release : 2004-01-01
Category : Science
ISBN : 0802088112

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Browsing Science Research at the Federal Level in Canada by Brian B. Wilks Pdf

Wilks provides a historical background, list of publications, and description of activities for most of the major science initiatives undertaken at the federal level. He surveys a wide range of government documents and monographic and serial science collections used by both faculty and students.

Author : Canadian Wildlife Service
Publisher : Unknown
Page : 340 pages
File Size : 50,9 Mb
Release : 2001
Category : Wildlife management
ISBN : UCLA:L0090428285

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Occasional Paper - Canadian Wildlife Service by Canadian Wildlife Service Pdf

Author : A. J. Gaston
Publisher : Unknown
Page : 56 pages
File Size : 52,7 Mb
Release : 2002
Category : Bird populations
ISBN : MINN:31951D02060039C

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Studies of High-latitude Seabirds by A. J. Gaston Pdf

Author : Canadian Wildlife Service
Publisher : Unknown
Page : 432 pages
File Size : 45,6 Mb
Release : 1957
Category : Wildlife conservation
ISBN : UOM:39015061981901

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Occasional Papers by Canadian Wildlife Service Pdf

Author : Anonim
Publisher : Unknown
Page : 752 pages
File Size : 45,6 Mb
Release : 2000
Category : Zoology
ISBN : UCR:31210013153133

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Canadian Journal of Zoology by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 412 pages
File Size : 46,5 Mb
Release : 2005
Category : Sea birds
ISBN : UCLA:L0098843089

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Marine Ornithology by Anonim Pdf

Author : Anthony J. Gaston,Canadian Wildlife Service
Publisher : Unknown
Page : 196 pages
File Size : 50,9 Mb
Release : 2008
Category : Bird banding
ISBN : UOM:39015088010536

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Canadian Atlas of Bird Banding by Anthony J. Gaston,Canadian Wildlife Service Pdf

Summarizes, for the first time, bird-banding results for Canada, including data on birds banded in Canada and those banded elsewhere but encountered in Canada. Although limited in geographic scope, the data depict movement patterns that are typical for North America as a whole. The current volume deals with seabirds (albatrosses, petrels, gannets, cormorants, pelicans, jaegers, gulls, terns, and auks).

Author : Jean-Luc DesGranges,Alain Desrosiers,Canadian Wildlife Service
Publisher : Unknown
Page : 32 pages
File Size : 46,5 Mb
Release : 2006
Category : Nature
ISBN : MINN:31951D02363395Q

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Breeding Distribution and Population Trends of the Great Blue Heron in Quebec, 1977-2001 by Jean-Luc DesGranges,Alain Desrosiers,Canadian Wildlife Service Pdf

Regular surveys of Great Blue Heron (Ardea herodias) colonies in Quebec, conducted between 1977 and 2001, resulted in the discovery of 705 colonies, mostly in the western part of the province. While single breeding pairs were occasionally found (9% of Quebec "heronries"), the colonies were generally composed of fewer than 16 breeding pairs, with sometimes over 50 (18 known colonies), as was the case on several islands in the St. Lawrence River. Close to one-third (1919 of the 6481 active nests) of the Quebec Great Blue Heron population was associated with heronries in the St. Lawrence system. Half of the St. Lawrence heronries that were active during two adjacent survey periods (1975-1983 and 1984-1990, or 1984-1990 and 1991-2001) increased in size between periods, while one-third of the colonies decreased in size. One-sixth of the colonies remained the same size during the study period. Great Blue Herons periodically abandon their colonies and settle elsewhere. Our data show that 50% of known Quebec colonies (n = 377 colonies visited more than once) were abandoned after being discovered as active colonies, and, on average, all nests in colonies that are abandoned disappear 7 years after discovery of the colony. On the basis of thorough inventories conducted on the St. Lawrence, we found that all nest platforms in 14 of the 70 colony sites had disappeared in less than 25 years. Since 1977, when regular surveys began, 50-90% of breeding attempts have been successful, yielding an average of over 2.2 chicks per pair. This productivity rate suggests that the Quebec population of Great Blue Herons may be increasing and may explain the recent expansion in its range. Following our 25 years of investigation on the Great Blue Heron in the province, we estimate the current late-summer Great Blue Heron population of Quebec at some 27 000 individuals (6500 pairs producing 2.2 young per pair per year).--Publisher's description.

Author : Paul Bernard Latour
Publisher : Unknown
Page : 132 pages
File Size : 41,8 Mb
Release : 2008
Category : Birds
ISBN : UIUC:30112099299163

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Key Migratory Bird Terrestrial Habitat Sites in the Northwest Territories and Nunavut by Paul Bernard Latour Pdf

Describes key terrestrial habitat areas that are essential to the welfare of various migratory bird species in Canada.

Author : Gustaf Samelius,Ray T. Alisauskas,James Edward Hines,Canadian Wildlife Service
Publisher : Unknown
Page : 40 pages
File Size : 45,6 Mb
Release : 2008
Category : Bird populations
ISBN : UIUC:30112051748199

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Productivity of Lesser Snow Geese on Banks Island, Northwest Territories, Canada, in 1995-1998 by Gustaf Samelius,Ray T. Alisauskas,James Edward Hines,Canadian Wildlife Service Pdf

"We estimated that 264 000-452 000 Lesser Snow Geese Chen caerulescens caerulescens nested at Egg Riveron Banks Island, Northwest Territories, in 1995-1998. This was about twice as many geese as was reported nesting there in the 1980s, and we estimated that the nesting population grew by 4.2% per year from 1953 to 1998"--Abstract.

Author : R. I. G. Morrison,Canadian Wildlife Service
Publisher : Unknown
Page : 68 pages
File Size : 47,9 Mb
Release : 2001
Category : Shore birds
ISBN : MINN:31951D020274311

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Estimates of Shorebird Populations in North America by R. I. G. Morrison,Canadian Wildlife Service Pdf

Presents estimates of population sizes of 53 species of Nearctic shorebirds occurring regularly in North America, plus four species that breed occasionally. The estimates are given for various regions of the continent and include references to the literature as well as discussion of relevant matters such as population trends. Information on estimation methods & their accuracy is also included.