Download or read book Population Genetic Structure and Breeding Philopatric Behavior of Cackling Canada Geese written by Ada Christine Fowler and published by . This book was released on 2003 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Genetic Structure and Breeding Philopatric Behavior of Cackling Canada Geese written by Ada Christine Fowler and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 2003 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author studied patterns of genetic differentiation in breeding cackling Canada geese (Branta canadensis minima) at multiple scales, and sought to link reproductive consequences of philopatry with subsequent patterns. Large-scale patterns were examined using different types of molecular markers. Lastly, the author investigated relatedness and nesting dispersion of Pacific greater white-fronted geese (Anser albifrons frontalis). Females in clusters were not more related than expected. The studies were conducted in coastal western Alaska along the coast of the Bering Sea in the Hazen Bay area and along the Kashunuk River near its mouth at Hazen Bay.
Download or read book Philopatry Geographic Variation in Body Size and Genetic Structure of Canada Geese written by James O. Leafloor and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1998 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phylogeography and Management of Snow Ross s Canada and Cackling Geese written by Rainy Inman Shorey and published by . This book was released on 2005 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing Genetic Variation in Natal Populations of Small Canada Geese Via Microsatellite Loci written by James C. Cathey and published by . This book was released on 1997 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 784 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 American Doctoral Dissertations written by and published by . This book was released on 2002 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 2008 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Our Living Resources written by and published by . This book was released on 1995 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report provides information on distribution, abundance, and health of birds, mammals, reptiles and amphibians, fishes, invertebrates, plants, terrestrial ecosystems, aquatic ecosystems, coastal and marine ecosystems, riparian ecosystems, the Great Plains, Interior West, Alaska, and Hawaii. It also discusses special issues: global climate change, human influences, non-native species, and habitat assessments.
Download or read book Our Living Resources written by Edward T. LaRoe and published by Government Printing Office. This book was released on 1995 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wildlife, species, mammals, reptiles, amphibians, fishes, ecosystems, climate, ecoregions.
Download or read book Acta ornithologica written by and published by . This book was released on 2007 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Evolution of Social Behaviour written by Michael Taborsky and published by Cambridge University Press. This book was released on 2021-08-26 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: How can the stunning diversity of social systems and behaviours seen in nature be explained? Drawing on social evolution theory, experimental evidence and studies conducted in the field, this book outlines the fundamental principles of social evolution underlying this phenomenal richness.To succeed in the competition for resources, organisms may either 'race' to be quicker than others, 'fight' for privileged access, or 'share' their efforts and gains. The authors show how the ecology and intrinsic attributes of organisms select for each of these strategies, and how a handful of straightforward concepts explain the evolution of successful decision rules in behavioural interactions, whether among members of the same or different species. With a broad focus ranging from microorganisms to humans, this is the first book to provide students and researchers with a comprehensive account of the evolution of sociality by natural selection.
Download or read book Birds of Nunavut written by James M. Richards and published by UBC Press. This book was released on 2018-08-10 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nunavut is a land of islands, encompassing some of the most remote places on Earth. It is also home to some of the world’s most fascinating bird species. Birds of Nunavut is the first complete survey of every species known to occur in the territory. Co-written by a team of eighteen experts, it documents 295 species of birds (of which 145 are known to breed there), presenting a wealth of information on identification, distribution, ecology, behaviour, and conservation. Lavishly illustrated with over 800 colour photographs and 155 maps, this is a visually stunning reference work on the birds that live in and visit Nunavut.
Download or read book Transactions of the North American Wildlife and Natural Resources Conference written by and published by . This book was released on 1994 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes another issue of 1936 ed. without illus.
Download or read book The Birds of North America written by and published by . This book was released on 1992 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ecology and Management of Breeding Waterfowl written by and published by U of Minnesota Press. This book was released on 1992 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
