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Ecology Of Great Basin Canada Goose Broods In Southcentral Washington Microform
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Author :Eberhardt, Lester E. (Lester Earl) Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :186 pages Book Rating :4.:/5 (168 download)
Book Synopsis Ecology of Great Basin Canada Goose Broods in Southcentral Washington [microform] by : Eberhardt, Lester E. (Lester Earl)
Download or read book Ecology of Great Basin Canada Goose Broods in Southcentral Washington [microform] written by Eberhardt, Lester E. (Lester Earl) and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1987 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ecology of female Great Basin Canada geese (Branta canadensis moffitti) and their broods was studied during the rearing seasons of 1983 and 1984 on the Columbia River in southcentral Washington. The movements and activities of 41 adult female geese, marked with radio-transmitters, and their broods were monitored. Adult female geese used an average of 8.8 ± 4.4 (1 SD) km of the Columbia River to raise their broods to fledging. Movement rates of broods were not significantly influenced by age of goslings or weather patterns. Broods were relatively inactive at night and most mobile during late-morning hours. During the prefledging period, feeding was the predominate activity of broods and adult females, involving approximately 54% and 45% of the daylight hours, respectively. The activity budgets of both adult females and their broods changed dramatically at fledging. Time spent in inactive states and preening increased, while movement and feeding activity decreased. Broods preferred terrestrial habitats within 5 m of the shoreline over aquatic habitats. A shoreline pasture that was fertilized and grazed by cattle was an important foraging habitat to local broods, but did not attract broods from surrounding areas. Broods that utilized this pasture spent less time moving and were inactive more than broods that utilized only native habitats. These differences may be related to the increased amount of time required for broods in native habitats to search for adequate foraging sites. However, the total time spent feeding and growth rates of broods in the two types of habitat did not appear to differ, suggesting that the quality and quantity of native forages were sufficient to meet nutritional needs of broods. Broods appeared to be most susceptible to human disturbance during the first few weeks following hatching, but older broods were relatively tolerant of repeated human disturbance. Fifteen (55.6%) of the 27 adult females, for which the fate of the brood could be determined, fledged at least one gosling. Daily survival rates of goslings, based on the Mayfield method, were significantly lower during the first 14 days of life (0.971), as compared to the rest of the 70-day rearing season (0.995). The overall estimated survival rate for goslings during the rearing season was 0.491 ± 0.008 (2 SE), which was considerably lower than that previously recorded for this species. The reasons for the apparent low survival are unknown, but may partially reflect the increased ability of radio-telemetry techniques, compared to other more commonly used techniques, to detect gosling mortality. The significance of the apparent low survival rate is also unknown; however, the resident nesting population was increasing during the study period.
Book Synopsis Ecology of the Great Basin Canada Goose on the Columbia River in North-Central Washington by : Richard L. Knight
Download or read book Ecology of the Great Basin Canada Goose on the Columbia River in North-Central Washington written by Richard L. Knight and published by . This book was released on 1978 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Great Basin Canada Goose in Southcentral Washington by :
Download or read book The Great Basin Canada Goose in Southcentral Washington written by and published by . This book was released on 1991 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Overall, the nesting population of Great Basin Canada geese (Branta canadensis moffitti) on the Hanford Site in southcentral Washington State is doing well and appears to be increasing. The average annual total nests for the period 1981 through 1990 was 215 nests, which is slightly above the average reported for the period 1950 through 1970. The nesting population has shifted its nucleus from upriver islands (1--10) to the lower river islands (11--20) with over 70% of the present-day nesting occurring on Islands 17, 18, 19, 20. The annual percent-successful nests from 1981 through 1990 was 80%. This is above the 71% reported for 1950 to 1970, but is below the 82% reported for 1971 to 1980. Average annual clutch size for 1981 to 1990 was 6.05, which is above the 1971-to-1980 average of 5.6 and the 1950-to-70 average of 5.5. Next desertions for 1981 to 1990 averaged 8%. This rate is well below the 14% reported for 1950 to 1970. Predators were responsible for an annual predation rate of 9% from 1981 to 1990. This is below the 1950-to-1970 annual average predation rate of 14%. Flooding losses to nests were low during the 1980s, except for 1989 and 1990 when 6% and 9% of the total nests, respectively, were destroyed by flooding. 9 refs., 4 figs., 1 tab.
Book Synopsis Ecology and Management of the Western Canada Goose in Washington by : I. J. Ball
Download or read book Ecology and Management of the Western Canada Goose in Washington written by I. J. Ball and published by . This book was released on 1981 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadiana written by and published by . This book was released on 1989 with total page 1236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Jeffrey Scott Lawrence Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :380 pages Book Rating :4.:/5 (181 download)
Book Synopsis Population Ecology of the Giant Canada Geese in West-central Illinois [microform] by : Jeffrey Scott Lawrence
Download or read book Population Ecology of the Giant Canada Geese in West-central Illinois [microform] written by Jeffrey Scott Lawrence and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1987 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nesting and Brood Rearing Ecology of the Vancouver Canada Goose on Admiralty Island in Southeast Alaska by : Charles S. Lebeda
Download or read book Nesting and Brood Rearing Ecology of the Vancouver Canada Goose on Admiralty Island in Southeast Alaska written by Charles S. Lebeda and published by . This book was released on 1980 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diseases of Wild Waterfowl by : Gary A. Wobeser
Download or read book Diseases of Wild Waterfowl written by Gary A. Wobeser and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Management of wild waterfowl has become increasingly intensive. Many birds now hatch in managed nesting cover or in artificial nesting structures, use man-made wetlands, and winter on crowded refuges while consuming a grain diet The water they use is often limited in supply and may contain residues from its many prior users. Unfortunately, intensified management often results in new problems, among which disease is important There are many similarities between the current form of management used for some waterfowl and that used in domestic animals. In both, the objective is to maintain a healthy, productive population. Dealing with health problems in waterfowl will benefit from combining the skills of veterinary medicine and wildlife ecology. Revisiting this book after 15 years allowed me to consider changes at the interface between the two disciplines. Veterinary medicine traditionally has been concerned with the individual and with treating sick animals, while the ecologist is concerned with populations and the manager has limited interest in treating sick birds. During this period there has been a marked increase in awareness among veterinarians that they have a responsibility in wildlife and conservation biology. Curricula of many veterinary colleges now include material on non-domestic animals and attempt to put disease in an ecological context. Also during this time, waterfowl managers have become more aware of disease as a factor in population biology and there are early attempts to put numbers to "disease" in models of continental waterfowl populations.
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1987 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index to American Doctoral Dissertations by :
Download or read book Index to American Doctoral Dissertations written by and published by . This book was released on 1989 with total page 1252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1988 with total page 1226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mammals and Birds as Bioindicators of Trace Element Contaminations in Terrestrial Environments by : Elżbieta Kalisińska
Download or read book Mammals and Birds as Bioindicators of Trace Element Contaminations in Terrestrial Environments written by Elżbieta Kalisińska and published by Springer. This book was released on 2019-03-01 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: The population explosion that began in the 1960s has been accompanied by a decrease in the quality of the natural environment, e.g. pollution of the air, water and soil with essential and toxic trace elements. Numerous poisonings of people and animals with highly toxic anthropogenic Hg and Cd in the 20th century prompted the creation of the abiotic environment, mainly in developed countries. However, the system is insufficient for long-term exposure to low concentrations of various substances that are mainly ingested through food and water. This problem could be addressed by the monitoring of sentinels – organisms that accumulate trace elements and as such reflect the rate and degree of environmental pollution. Usually these are long-lived vertebrates – herbivorous, omnivorous and carnivorous birds and mammals, especially game species. This book describes the responses of the sentinels most commonly used in ecotoxicological studies to 17 trace elements.
Book Synopsis Ethno-ornithology by : Sonia C. Tidemann
Download or read book Ethno-ornithology written by Sonia C. Tidemann and published by Routledge. This book was released on 2012-08-06 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indigenous knowledge that embraces ornithology takes in whole social dimensions that are inter-linked with environmental ethos, conservation and management for sustainability. In contrast, western approaches have tended to reduce knowledge to elemental and material references. This book looks at the significance of indigenous knowledge of birds and their cultural significance, and how these can assist in framing research methods of western scientists working in related areas. As well as its knowledge base, this book provides practical advice for professionals in conservation and anthropology by demonstrating the relationship between mutual respect, local participation and the building of partnerships for the resolution of joint problems. It identifies techniques that can be transferred to different regions, environments and collections, as well as practices suitable for investigation, adaptation and improvement of knowledge exchange and collection in ornithology. The authors take anthropologists and biologists who have been trained in, and largely continue to practise from, a western reductionist approach, along another path - one that presents ornithological knowledge from alternative perspectives, which can enrich the more common approaches to ecological and other studies as well as plans of management for conservation.
Download or read book Living on the Edge written by Le Zwarts and published by BRILL. This book was released on 2012-01-01 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Living on the Edge' examines the function of the Sahel region of Africa as an important wintering area for long-distance migrant birds. It describes the challenges the birds have to cope with – climate change, of course, and rapid man-made habitat changes related to deforestation, irrigation and reclamation of wetlands. How have all these changes affected the birds, and have birds adapted to these changes? Can we explain the changing numbers of breeding birds in Europe by changes in the Sahel, or vice versa?
Book Synopsis Wildlife Resources by : Harald H. Roth
Download or read book Wildlife Resources written by Harald H. Roth and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general interest and attention paid to the use of the renewable natural resources of the world have increased greatly during the last decades. This is due to the environmental dilemma into which mankind has got itself by the total disregard of ecological facts and laws, the underprizing of natural resources and the overemphasis on economic develop ment, coupled with unimpeded rapid population growth and the preponderance of material istic consumption-oriented attitudes. The management and use of natural resources such as forests, grasslands, rivers and lakes were formerly considered purely in a financial context, whereas latterly, a consciousness of their social function and the indirect economic benefits which can be derived from them has developed. Thus, as regards these traditional resources, multi-use concepts comprising eco nomically oriented utilisation as well as recreational, educational and social use have be come widely accepted. Conservation of natural resources for sustainable consumptive as well as non-consumptive uses has been recognised as a key element for maintaining eco nomic development all over the world. Fortunately, the industrialised countries have started to apply this principle themselves and in their technical and financial aid to the developing Third World countries. This is manifest from policy documents such as the World Bank Policy on Development of Wild Lands, issued in 1987.
Book Synopsis Coastal Ecological Systems of the United States by : Howard T. Odum
Download or read book Coastal Ecological Systems of the United States written by Howard T. Odum and published by Conservation Foundation. This book was released on 1974-06-01 with total page 1977 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mediterranean Oak Woodland Working Landscapes by : Pablo Campos
Download or read book Mediterranean Oak Woodland Working Landscapes written by Pablo Campos and published by Springer Science & Business Media. This book was released on 2013-06-18 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The oak tree was a boon companion as humans expanded their presence across much of the globe. While oak woodlands (Quercus spp.) come today in stunningly diverse forms, the stately dehesas of Spain and the dramatic oak-dominated ranchlands of California are working landscapes where cultivation and manipulation for a couple of millennia have shaped Mediterranean-type ecosystems into a profoundly modified yet productive environment that is sought-after by every manner of species. The grazing of wildlife and livestock in oak woodlands yields a remarkable plant and animal biodiversity, creating a mosaic of habitats and visually pleasing savannas. Added products unique to Spain such as Iberian pigs and cork, and in California multiple landowner benefits, include valued ecosystem services that allow owners, visitors, and conservation supporters to experience the benefits of woodland life. With its 15 chapters a decade in the making, this handsomely illustrated book covers key topics in oak woodland policy, ecology, and management in Spain and California, presenting new research results and reviewing an existing expert literature.
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