Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Adaptive Significance Of Egg Size Variation In Lesser Snow Geese Chen Caerulescens Caerulescens On Akimiski Island Nunavut
Download Adaptive Significance Of Egg Size Variation In Lesser Snow Geese Chen Caerulescens Caerulescens On Akimiski Island Nunavut full books in PDF, epub, and Kindle. Read online Adaptive Significance Of Egg Size Variation In Lesser Snow Geese Chen Caerulescens Caerulescens On Akimiski Island Nunavut ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Adaptive Significance of Egg Size Variation in Lesser Snow Geese (Chen Caerulescens Caerulescens) on Akimiski Island, Nunavut by : Steven Thomas Adrian Timmermans
Download or read book Adaptive Significance of Egg Size Variation in Lesser Snow Geese (Chen Caerulescens Caerulescens) on Akimiski Island, Nunavut written by Steven Thomas Adrian Timmermans and published by . This book was released on 2000 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Jeffrey Scott Gleason Publisher :Library and Archives Canada = Bibliothèque et Archives Canada ISBN 13 : Total Pages :220 pages Book Rating :4.E/5 ( download)
Book Synopsis 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 by : Jeffrey Scott Gleason
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.).
Book Synopsis Factors Influencing Pre- and Post-fledging Growth and Survival of Canada Goose Goslings on Akimiski Island, Nunavut by : Michael Robert John Hill
Download or read book Factors Influencing Pre- and Post-fledging Growth and Survival of Canada Goose Goslings on Akimiski Island, Nunavut written by Michael Robert John Hill and published by . This book was released on 1999 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparative Growth and Development of Canada Geese (Branta Canadensis Interior) and Lesser Snow Geese (Chen Caerulescens Caerulescens) of Akimiski Island, Northwest Territories by : Shannon Scott Badzinski
Download or read book Comparative Growth and Development of Canada Geese (Branta Canadensis Interior) and Lesser Snow Geese (Chen Caerulescens Caerulescens) of Akimiski Island, Northwest Territories written by Shannon Scott Badzinski and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Goslings of sub-arctic breeding Canada Geese (Branta canadensis interior; hereafter CG) and high arctic breeding Lesser Snow Geese (Chen caerulescens caerulescens; hereafter LSG) are closely related phylogenetically, but have evolved under differing selection regimes. Therefore, a comparison of these two species growing in the same environment was done to provide a better understanding of ultimate factors influencing patterns of development and rates of growth in arctic geese. My objectives were (1) to determine if neonate CG and LSG had similar relative body compositions, tissue maturity, lipid reserves, and if they had a similar state of developmental maturity at hatch (external morphology, digestive organ morphology, and skeletal muscles), (2) to explore if differences could be explained by adaptation to different ecological conditions encountered at hatch and/or to interspecific differences in egg composition and egg nutrient catabolism, and (3) to determine and compare growth rates and developmental patterns of external structures, digestive organs, and skeletal muscles of 26-46 day old CG and LSG experiencing similar environmental conditions. I also tested Ricklefs' tissue allocation hypothesis. (Abstract shortened by UMI.).
Download or read book Canadian Journal of Zoology written by and published by . This book was released on 2013-07 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fitness consequences of egg-size variation in the lesser snow goose by : T.D. WILLIAMS
Download or read book Fitness consequences of egg-size variation in the lesser snow goose written by T.D. WILLIAMS and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 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, Nunavit by : Jeffrey Scott Gleason
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, Nunavit written by Jeffrey Scott Gleason and published by . This book was released on 2003 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Productivity of Lesser Snow Geese on Banks Island, Northwest Territories, Canada, in 1995-1998 by : Gustaf Samelius
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.
Book Synopsis Comparative Growth and Development of Canada Geese, Branta Canadensis Interior, and Lesser Snow Geese, Chen Caerulescens Caerulescens, of Akimiski Island, Northwest Territories by :
Download or read book Comparative Growth and Development of Canada Geese, Branta Canadensis Interior, and Lesser Snow Geese, Chen Caerulescens Caerulescens, of Akimiski Island, Northwest Territories written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impacts of Climate Change and Intensive Lesser Snow Goose (Chen Caerulescens Caerulescens) Activity in High Arctic Pond Complexes - Banks Island, Northwest Territories by : Thomas Kiyoshi Fujiwara Campbell
Download or read book Impacts of Climate Change and Intensive Lesser Snow Goose (Chen Caerulescens Caerulescens) Activity in High Arctic Pond Complexes - Banks Island, Northwest Territories written by Thomas Kiyoshi Fujiwara Campbell and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid increases in air temperature in Arctic and subarctic regions are driving significant changes to surface water. These changes and their impacts are not well understood in sensitive high Arctic ecosystems. This thesis explores changes in surface water in the high Arctic pond complexes of western Banks Island, Northwest Territories, and examines the impacts of this change on vegetation communities. Landsat imagery (1985-2015) was used to detect trends in surface water, moisture, and vegetation productivity, aerial imagery change detection (1958 and 2014) quantified shifts in the size and distribution of waterbodies, and field sampling investigated factors contributing to observed changes. The impact of expanding lesser snow goose populations on observed changes in surface water was investigated using the aerial imagery change detection of 2409 waterbodies and an information theoretic model selection approach, while their impact on vegetation was assessed using data from field surveys. Our analyses show that the pond complexes of western Banks Island are drying, having lost 7.9% of the surface water that existed in 1985. This loss of surface water disproportionately occurred in smaller sized waterbodies, indicating that climate is the main driver. Model selection showed that intensive occupation of lesser snow geese was associated with more extensive drying and draining of waterbodies and suggests this intensive habitat use may reduce the resilience of pond complexes to climate warming. Evidence from field surveys suggests that snow goose foraging is also contributing to patches of declining vegetation productivity within drying wetland areas. Diminishing and degrading high Arctic pond complexes are likely to alter permafrost thaw and greenhouse gas emissions, as well as the habitat quality of these ecosystems. Additional studies focused the mechanisms of surface water loss, the direct impacts of wetland drying on vegetation, and the contributions of snow geese to these processes, are necessary to better understand the changes occurring on Banks Island.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2000 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Modelling and Management of Snow Geese by :
Download or read book Population Modelling and Management of Snow Geese written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developmental Abnormalities in Wild Populations of Birds by :
Download or read book Developmental Abnormalities in Wild Populations of Birds written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Modelling and Management of Snow Geese by : H. Boyd
Download or read book Population Modelling and Management of Snow Geese written by H. Boyd and published by . This book was released on 2000 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document consists of three separate but related papers. The objective of the first is to improve managerial understanding of the impact of spring hunting by indigenous peoples in northern Canada. It is an analysis of the relative impact of hunting in the spring, compared with the conventional hunting seasons in fall and winter. In the second paper, Cooke et al. comments on the model and the choice of parameters that was used in a paper by Rockwell et al., and which provided the underpinning for the argument in that paper that a great increase in the hunting kill of Snow Geese was required to reverse the rapid increase in the numbers of those geese. In the third paper, Rockwell and Ankney counter Cooke's claims.
Book Synopsis Genetic Variation in Serum Proteins of the Lesser Snow Goose Anser Caerulescens Caerulescens by :
Download or read book Genetic Variation in Serum Proteins of the Lesser Snow Goose Anser Caerulescens Caerulescens written by and published by . This book was released on 1974 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Arctic Ecosystems in Peril by : Bruce D. J. Batt
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:
Book Synopsis The Snow Geese of La Pérouse Bay by : Fred Cooke
Download or read book The Snow Geese of La Pérouse 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.
