Download or read book Canadian Journal of Zoology written by and published by . This book was released on 2002 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Sympatric Lesser Snow Geese Chen Caerulescens Caerulescens on Reproductive Performance Behavior and Food Habits of Canada Geese Branta Canadensis Interior on Akimiski Island Nunavut written by Jeffrey Scott Gleason and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2003 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on Akimiski Island, Nunavut, indicates declining numbers of nesting Southern James Bay Population (SJBP) Canada Geese (Branta canadensis interior) while increases have been documented for number of breeding Lesser Snow Geese (Chen caerulescens caerulescens). Low direct recovery rates of goslings is suggestive of late-summer mortality which may be limiting recruitment for Canada geese on Akimiski Island. This study was designed specifically to (1) compare Canada Goose reproductive performance, incubation and brood-rearing behavior in areas of allopatry and sympatry and with Lesser Snow Geese, (2) determine if there are differences in diets of Canada Geese in areas of allopatry and sympatry, and (3) determine if there are differences in diets of Canada and Lesser Snow Geese in the area of sympatry. I documented annual variation for all and spatial variation for some reproductive parameters measured. Results of between-area comparisons of reproductive performance tended to suggest that in some years, Canada Geese nesting in the area of sympatry contribute little towards the maintenance of the island segment of this population. During incubation when females were on nests, male behavior varied as a function of year, area, time-of-day, and incubation stage. Overall, male Canada Geese allocated their time primarily to vigilance, feeding, and resting when females were on the nest. Males in the area of allopatry were more vigilant and fed less compared to males in the area of sympatry. When females were on the nest, their behavior varied relative to time-of-day, incubation stage, and temperature. Females in the area of allopatry were more vigilant than females in the area of sympatry, but overall, females on the nest allocated their time primarily to resting and maintenance. Recess behavior of Canada Geese varied relative to sex, incubation stage, and temperature, but not area, though pairs in the area of allopatry tended to spend more time alert and less time feeding compared to pairs in the area of sympatry. During recesses, males allocated their time primarily to vigilance, whereas females allocated nearly equal proportions of time to feeding and maintenance. Overall, brood-rearing behavior varied relative to year, area, time-of-day, sex/age class, days since peak hatch, brood size, brood density, and temperature. Overall, results are indicative of exploitation competition and I suggest that present foraging conditions are insufficient to meet the energetic demands of breeding Canada Geese, as well as breeding and staging Lesser Snow Geese, molt-migrant Giant Canada Geese, and staging Atlantic Brant. Such an energy deficit is particularly detrimental to the growth and development of Canada Goose goslings resulting in locally poor recruitment which presumably will lead to a much depressed breeding population of Canada Geese on Akimiski Island. (Abstract shortened by UMI.).
Download or read book Arctic Ecosystems in Peril written by Bruce D. J. Batt and published by . This book was released on 1997 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gifts from the Thunder Beings written by Roland Bohr and published by U of Nebraska Press. This book was released on 2014-05-01 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gifts from the Thunder Beings examines North American Aboriginal peoples’ use of Indigenous and European distance weapons in big-game hunting and combat. Beyond the capabilities of European weapons, Aboriginal peoples’ ways of adapting and using this technology in combination with Indigenous weaponry contributed greatly to the impact these weapons had on Aboriginal cultures. This gradual transition took place from the beginning of the fur trade in the Hudson’s Bay Company trading territory to the treaty and reserve period that began in Canada in the 1870s. Technological change and the effects of European contact were not uniform throughout North America, as Roland Bohr illustrates by comparing the northern Great Plains and the Central Subarctic—two adjacent but environmentally different regions of North America—and their respective Indigenous cultures. Beginning with a brief survey of the subarctic and Northern Plains environments and the most common subsistence strategies in these regions around the time of contact, Bohr provides the context for a detailed examination of social, spiritual, and cultural aspects of bows, arrows, quivers, and firearms. His detailed analysis of the shifting usage of bows and arrows and firearms in the northern Great Plains and the Central Subarctic makes Gifts from the Thunder Beings an important addition to the canon of North American ethnology.
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 The Giant Canada Goose written by Harold Carsten Hanson and published by Southern Illinois University Press. This book was released on 1997 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This revised edition is not an expanded version of the original, summarizing, for example, the dozens of studies that hve been made of the productivity of various subpopulations of the "Giant Canada Goose" since its rediscovery. Rather, the main objectives of this revised, slightly enlarged edition are to redefine the range of this race as it was originally understood and to correct earlier assumptions based on the literature as to racial identity of peripheral populations."--Page xvii.
Download or read book Food Webs at the Landscape Level written by Gary A. Polis and published by University of Chicago Press. This book was released on 2004-02-22 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paying special attention to the fertile boundaries between terrestrial, freshwater, and marine ecosystems, this work shows not only what this new methodology means for ecology, conservation, and agriculture but also serves as a fitting tribute to Gary Polis and his major contributions to the field
Download or read book The Snow Geese of La P rouse Bay written by Fred Cooke and published by Oxford University Press on Demand. This book was released on 1995 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique title evaluates the results from one of the most significant long-term studies of birds in the late twentieth century. The authors evaluate the working of natural selection on Snow Goose plumage colour, seasonal timing of breeding, clutch size, egg size and body size.With information gathered over 26 years on 40,000 individually marked adult geese, 45,000 nests and more than 110,000 goslings at one colony in northern Manitoba, this work is a landmark in avian biology and population genetics.
Download or read book Canada Geese of the Atlantic Flyway written by and published by . This book was released on 1992 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biochemistry of the Avian Embryo written by Alexis Lawrence Romanoff and published by . This book was released on 1967 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Inland Seas written by I.P. Martini and published by Elsevier. This book was released on 2011-09-22 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: The various chapters of this book have been written by researchers who are still working in the Canadian Inland Seas region. The chapters synthesize what is known about these seas, yet much still is to be learnt. It is hoped that this collection of information will serve as a springboard for future, much needed, studies in this fascinating, diverse region, and will stimulate comparative analyses with other subarctic and arctic basins of the world. The Canadian Inland Seas are the only remnants, albeit cold, of the ancient cratonic marine basins which occupied central North America throughout the Paleozoic and part of the Mesozoic. Precambrian rocks and gently dipping Paleozoic sedimentary rocks underlie the seas. The area is also close to the centers of Pleistocene glaciations. The coastal areas represent an emerged landscape of the post-glacial Tyrrell sea, as the region has been isostatically uplifted to about 350 meters since glacial times. A total of 56 fish species inhabit Hudson Bay and James Bay. Seals, whales and one of the largest and southernmost populations of polar bears inhabit the seas as well. The coastal areas are important habitats for migratory bird populations, some of which migrate from as far away as Southern Argentina.The ostic environment has preserved these regions relatively unchanged by man, with only a major harbour at Churchill, Manitoba, which is active for part of the year, and a second large, rail-terminal settlement in the south at Moosonee, Ontario. A few, small, native Indian and Inuit villages dot the coasts. The seas are being affected indirectly by the damming of rivers for the generation of hydroelectric power, and by drainage diversions towards the man-made reservoirs. A major project is being completed in Quebec east of James Bay, but other rivers in Ontario and Manitoba have been dammed as well. Undoubtedly freshwater is one of the more important resources of the area, however its exploitation needs careful thought because of the possible long-range effects on the environment, particularly the coastal marshes, which sustain much of the eastern American intercontinental migratory avifauna. Other resources occur in the regions, primarily minerals and perhaps petroleum. For the most part however, such resources remain to be discovered.
Download or read book Nunavut Coastal Resource Inventory written by Canada. Indian and Northern Affairs Canada and published by . This book was released on 2010 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wetlands of Canada written by Canada Committee on Ecological (Biophysical) Land Classification. National Wetlands Working Group and published by . This book was released on 1988 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the influencing factors, distribution, evolution, classification, regionalization and methodologies for study of the wetlands of Canada. Specific chapters are devoted to the arctic, subarctic, boreal, prairies, eastern temperate, Atlantic and Pacific regions as well as the salt marshes of Canada.
Download or read book Akhuurutauyut Nayugangit Tingmiaqnut Nunavunmi written by Canadian Wildlife Service and published by . This book was released on 2012 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Attending Alaska s Birds written by James G. King and published by Hancock House. This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attending Alaska's Birds, author King's 60 year memoir, covers a dramatic period in Alaska's history, a time when the people increased five-fold to over 600 thousand.King arrived in Alaska in 1949 at the age of 21. He describes life as a pilot/game warden, a refuge manager, a flyway biologist and an expert at enumerating birds while whizzing over them in a small plane. Over the past half century, James G. (Jim) King has probably been involved in more significant conservation actions than any other single Alaskan wildlife scientist. Many of the adventures he recounts in this volume are based on his participation in the selection of millions of acres of new wildlife refuges that came with the 1980 Alaska National Interest Lands Conservation Act (ANILCA). His years of flying waterfowl counts had made him familiar with the state's most productive wildlife areas. That knowledge, supported by his field reports and notes, proved invaluable in the selection of land for wildlife refuges. Attending Alaska's Birds is an exciting cornucopia of solid and fascinating biological and historical facts. It modestly describes, in first person, King's Alaska career as a scientist whose life has been dedicated to the well-being of Alaska's wildlife, especially its birds. King's studies helped to determine that Alaska is home, at least during part of each year, to 100 million seabirds, 70 million shorebirds, and 12 million waterfowl. Jim didn't count each bird, but he certainly counted his share in something like 6,000 hours of peering at them out of low flying airplanes, most of which he personally piloted. Attending Alaska's Birds is not only an exciting and interesting read, but it is the story of an outstanding man of accomplishment, and it provides an intimate look at historical actions that brought great changes to Alaska during the last half of the 20th century. It will become an important part of the literature of Alaska.
Download or read book Key Migratory Bird Terrestrial Habitat Sites in the Northwest Territories written by Stuart A. Alexander and published by . This book was released on 1991 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Identifies and describes 80 key habitat sites in NWT which are essential to the welfare of various migratory bird species in Canada.
