Download or read book Winter Distributions of Thick billed Murres from the Eastern Canadian Arctic and Western Greenland in Relation to Age and Time of Year written by Garry M. Donaldson and published by Canadian Museum of Civilization/Musee Canadien Des Civilisations. This book was released on 1997 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Winter Distributions of Thick billed Murres from the Eastern Canadian Arctic and Western Greenland in Relation to Age and Time of Year written by Canada. Environment Canada and published by Minister of Public Works and Government Services. This book was released on 1957 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings RMRS written by and published by . This book was released on 1998 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Personal Societal and Ecological Values of Wilderness written by and published by . This book was released on 1998 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Browsing Science Research at the Federal Level in Canada written by Brian B. Wilks and published by University of Toronto Press. This book was released on 2004-01-01 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Occasional Paper Canadian Wildlife Service written by Canadian Wildlife Service and published by . This book was released on 2001 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of High latitude Seabirds written by A. J. Gaston and published by . This book was released on 2002 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Occasional Papers written by Canadian Wildlife Service and published by . This book was released on 1957 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Zoology written by and published by . This book was released on 2000 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Ornithology written by and published by . This book was released on 2005 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Atlas of Bird Banding written by Anthony J. Gaston and published by . This book was released on 2008 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Download or read book Breeding Distribution and Population Trends of the Great Blue Heron in Quebec 1977 2001 written by Jean-Luc DesGranges and published by . This book was released on 2006 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Key Migratory Bird Terrestrial Habitat Sites in the Northwest Territories and Nunavut written by Paul Bernard Latour and published by . This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes key terrestrial habitat areas that are essential to the welfare of various migratory bird species in Canada.
Download or read book Productivity of Lesser Snow Geese on Banks Island Northwest Territories Canada in 1995 1998 written by Gustaf Samelius and published by . This book was released on 2008 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
Download or read book Estimates of Shorebird Populations in North America written by R. I. G. Morrison and published by . This book was released on 2001 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Key Marine Habitat Sites for Migratory Birds in Nunavut and the Northwest Territories written by Mark Laurence Mallory and published by . This book was released on 2004 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Science Review written by Bedford Institute of Oceanography and published by . This book was released on 1994 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the federal marine science and fisheries research programs that are carried out at the Bedford Institute of Oceanography, the Halifax Fisheries Research Laboratory, and the St. Andrews Biological Station.
