Download or read book Reproductive Ecology of Emperor Geese written by Margaret Rose Petersen and published by . This book was released on 1991 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reproductive Ecology and Environmental Change written by Jordan M. Thompson and published by . This book was released on 2022 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Survival and Brood Rearing Ecology of Emperor Geese written by Joel A. Schmutz and published by . This book was released on 2000 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Emperor Geese (Chen canagica) breed on the Yukon-Kuskokwim Delta in an area inhabited by three other goose species. Whereas populations of other geese increased since the mid 1980s, Emperor Goose numbers remained low. Because survival and habitat selection by broods of Emeperor Geese had not been studied previously and numbers of predatory Glaucous Gulls (Larus hyperboreus) had recently increased, I studied brood rearing ecology of Emperor Geese during 1993-1996 to assess whether this seasonal period could be limiting population growth. Survival of goslings to 30 days varied among years from 0.32 to 0.70 and was primarily influenced by mortality during the first five days after hatch. Other goose species with similar rates of gosling survival are increasing rapidly. Survival of Emperor Goose goslings was lowest in 1994, when unusually heavy rainfall occurred during early brood rearing. Using a long-term data set from Izembek National Wildlife Refuge, sizes of families in fall (n=23 years) were related to rainfall during early brood rearing. Gosling survival was lower and gull disturbance of broods greater in 1993-1994 than in 1995-1996. Although goslings wer commonly consumed by Glaucous Gulls, gull diets during 1993 were similar to those observed in the 1970s. Across a broad scale, broods of Emperor Geese (n=56) strongly selected habitats dominated by Carex subspathaceae, Carex ramenskii, and unvegetated areas interspersed among these forage species, as determined from telemetry. These selected habitats comprised one-third of all available habitat. Habitat selection by the composite goose community (dominated by Cackling Canada Geese [Branta canadensis minima]) was assessed by feces collections and differed substantially from that of Emperor Geese. Broods of Emperor Geese spent more time feeding during 1993-1996 than during an earlier study in 1985-1986. During 1994-1996, feeding rates of gosling and adult females was related more to total goose density than to Emperor Goose density. Although Cackling Canada Geese exhibited strongest selection of other habitats, their greater overall abundance resulted in numerical equivalence to Emperor Geese in habitats preferred by Emperor Geese. Interspecific competition for food has impacted behavior in Emperor Geese, which may impact growth and survival of juvenile geese"--Leaves 3-4
Download or read book Ecology of the Emperor Goose in Alaska written by David I. Eisenhauer and published by . This book was released on 1977 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monograph presenting data from field work and other sources to establish a baseline for emperor goose (Anser canagicus) nesting and ecology behavior on a breeding area free of disruptive human activity (Kokechik Bay, Kuskokwim area western Alaska).
Download or read book Nesting Ecology of Emperor Geese Anser Canagicus and Cackling Canada Geese Branta Canadensis Minima at Kokechik Bay Yukon Kuskokwim Delta Alaska written by Margaret R. Petersen and published by . This book was released on 1987 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers the emperor goose and cackling Canada goose but also discusses other geese such as the black brant and white-fronted goose.
Download or read book Reproductive Ecology Bioenergetics and Experimental Removal of Local Giant Canada Geese Branta Canadensis Maxima in Central Missouri written by John Matthew Coluccy and published by . This book was released on 2001 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Populations of Giant Canada Geese (Branta canadensis maxima) have increased dramatically throughout most of the Mississippi Flyway. This population expansion has been accompanied by an increase in goose-related problems, including depredation of agricultural crops, airport hazards, fecal contamination of water used for drinking or swimming, and damage to lawns, parks, beaches, and golf courses, caused by overgrazing, trampling, feathers, and defecation. Failure to control giant Canada goose populations through traditional harvest methods such as hunting, has prompted interest in alternative harvest methods (nest manipulations, welfare harvest, and nesting female harvest) as a means of reducing goose numbers. The intent of this research was to generate long-term reproductive, survival and bioenergetics data and to utilize these data to develop a population model specific to Missouri Giant Canada Geese. The model was then used to identify population parameters that most influence population growth and to evaluate proposed management actions. Sensitivity analyses indicated that the effect of adult survival on population growth was much greater than any other population parameter. Alternative harvest simulations indicated that nesting female harvest was the most effective means of reducing populations to statewide management objectives. From a management perspective, our results indicate that efforts to control numbers of giant Canada geese should focus on reducing adult survival, in particular adult female survival. It is unlikely that the required reduction in adult survival necessary to reach management objectives will be achieved through traditional harvest methods. Therefore, a combination of non-hunting lethal alternatives will be required.
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:
Download or read book Ecology of the Emperor Goose in Alaska written by David I. Eisenhauer and published by . This book was released on 1977 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Feeding Ecology of Emperor Geese Nesting at Kokechik Bay Yukon Kuskokwim Delta Alaska written by Karen Kathleen Laing and published by . This book was released on 1986 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Behavior of the Emperor Goose Anser Canagicus Sewastianov in Alaska written by David I. Eisenhauer and published by . This book was released on 1976 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat and Food Selection Behavior and Body Composition of Nesting Emperor Geese written by Karen Kathleen Laing and published by . This book was released on 1991 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Survival and Migration Ecology of Emperor Geese Along the Alaska Peninsula written by Joel A. Schmutz and published by . This book was released on 1990 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Survival and migratory patterns of emperor geese (Chen canagica) were investigated during 1988-90 by marking flightless geese with neck collars and reobserving them on spring and fall staging areas."--P. 1.
Download or read book Gallivanting Goslings written by Mairin A. Murphy and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Survival and Migration Ecology of Emperor Geese Along the Alaska Peninsula written by and published by . This book was released on 1990 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Survival and migratory patterns of emperor geese were investigated by placing neck collars on flightless geese during late summer and reobserving them at migratory staging grounds in the spring and fall, 1988-89. We obtained observational data at two of several major staging areas located on the Alaska Peninsula, Cinder and Nelson Lagoons."--Leaf 2.
Download or read book The North American Geese written by Paul Johnsgard and published by Lulu.com. This book was released on 2016-08-23 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: The eight currently recognized species of North American geese are part of a familiar group of birds collectively called waterfowl, all of which are smaller than swans and generally larger than ducks. They include the most popular of our aquatic gamebirds, with several million shot each year by sport hunters. Our two most abundant waterfowl, the Canada goose and snow goose, have populations collectively totaling about 15 million individuals. Like swans, the lifelong pairbonding of geese, their familial care, and prolonged social attachment to their offspring are legendary. Their seasonal migratory flights sometimes span thousands of miles, and the sight of their long, wavering flight formations are as much the symbols of seasonal change as are the spring songs of cardinals or the appearance of autumnal leaf colors. This book describes each species' geographic range and subspecies, its identification traits, weights and measurements, and criteria for its age and sex determination. Ecological and behavioral information includes each species' breeding and wintering habitats, its foods and foraging behavior, its local and long distance movements, and its relationships with other species. Reproductive information includes each species' age of maturity, pair-bond pattern, pair-forming behaviors, usual clutch sizes and incubation periods, brooding behavior, and postbreeding behavior. Mortality sources and rates of egg, young, and adult losses are also summarized, and each species' past and current North American populations are estimated. In addition to a text of nearly 60,000 words, the book includes 8 maps, 21 line drawings, and 28 photographs by the author, as well as more than 700 literature citations.
Download or read book Nesting Ecology of the Emperor Goose written by Philip C. Headley and published by . This book was released on 1967 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nesting and brooding behaviors of the emperor goose were studied in the Hooper Bay region of Alaska during the summers of 1965 and 1966. The wintering grounds of the goose in the Cold Bay and Izembek Bay areas (at the tip of the Alaska Peninsula) were studied in December 1965 and in February and September 1966. The purpose of the study was to increase knowledge of the ecology of the emperor goose on both its nesting and wintering grounds. Nesting studies were restricted to the Kolamak River region, 18 miles northeast of Hooper Bay. Brood observations were limited to the Bering Sea coast from Nelson Island in the south to Askinuk Mountains in the north.
Download or read book Ecology of the Emperor Goose written by P.C. Headley and published by . This book was released on 1967 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
