Download or read book The Foraging Ecology of Nesting Black throated Sparrows written by Kevin J. Zimmer and published by . This book was released on 1983 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial and Temporal Variation in the Breeding and Foraging Ecology of Black throated Sparrows written by Kevin J. Zimmer and published by . This book was released on 1993 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 28 (thesis year 1 983) a total of 10,661 theses titles from 26 Canadian and 197 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 28 reports theses submitted in-1983, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Download or read book The Breeding Ecology of the Black throated Sparrow in Southern New Mexico written by Michael Carl Delesantro and published by . This book was released on 1978 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Adaptations of Marsh Nesting Blackbirds MPB 14 Volume 14 written by Gordon H. Orians and published by Princeton University Press. This book was released on 2020-03-31 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The variety of social systems among the New World blackbirds (Family Icteridae) and the structural simplicity of their foraging environment provide excellent opportunities for testing theorics about the adaptive significance of their behavior. Here Gordon Orians presents the results of his many years of research on how blackbirds utilize their marsh environments during the breeding season. These results stem from information he gathered on three species during ten breeding seasons in the Pacific Northwest, on Red-winged blackbirds during two breeding seasons in Costa Rica, and on three species during one breeding season in Argentina. The author uses models derived from Darwin's theory of natural selection to predict the behavior and morphology of individuals as well as the statistical properties of their populations. First he tests models that predict habitat selection, foraging behavior, territoriality, and mate selection. Then he considers some population patterns, especially range of use of environmental resources and overlap among species, that may result from those individual attributes. Professor Orianns concludes with an overview of the structure of bird communities in marshes of the world and the relation of these patterns to overall source availability in these simple but productive habitats.
Download or read book Foraging Ecology of the Female Red winged Blackbird written by Mark Stuart Bergland and published by . This book was released on 1975 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foraging Ecology of Bird Flocks in a Tropical Forest written by William Hugh Buskirk and published by . This book was released on 1972 with total page 328 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 1994 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Birder s Handbook written by Paul Ehrlich and published by Simon and Schuster. This book was released on 1988 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: On t.p.: A field guide to the natural history of North American birds : including all species that regularly breed north of Mexico.
Download or read book Nesting Ecology of White throated Sparrows Zonotrichia Albicollis written by Melissa Olmstead and published by . This book was released on 2013 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of nesting success is one of the most widely-used methods for examining the factors governing recruitment in birds. Many ecological influences act together to increase or decrease nesting success, and knowledge of these mechanisms is crucial for determining the habitat or conservation requirements of a given species. One ecological influence is the timing of breeding, which in many species is related to a decline in nest success later in the breeding season. Much of the research on this subject has focused on cavity-nesting species, and the hypothesis that this seasonal decline is caused by a mismatch between clutch-initiation date and peak food availability for young. I tested this hypothesis in a population of white-throated sparrows ( Zonotrichia albicollis ) in Algonquin Provincial Park, Ontario, and I offer the alternate hypothesis that this decline may be caused by increased predation later in the season. Another influence on nest survival is disturbance caused by habitat management, such as the use of prescribed fire to conserve open- and early-successional habitats. While the goal of these restoration initiatives is to maintain landscape heterogeneity, the level of disturbance required to improve a habitat cannot exceed the tolerance of target species. Much of the research on this subject has focused on community-level studies quantifying the change in species abundances after a fire event. These studies capture only the most coarse-grained effects of fire, and may not be used to elucidate the mechanisms driving these changes in population size. I investigate the effect of spring burning on the nesting success of a single species, white-throated sparrows, and reveal that, while overall nesting success is not affected, fire has a substantial impact on nest site selection. This has implications for future controlled burn initiatives, since a matrix of suitable nesting habitat must be left untouched in order to allow breeding in the first year after the burn. Observing the same population in both a natural and managed system represents a valuable contribution to our knowledge of the effects of management strategies on avian nesting success.
Download or read book Ecology and Conservation of the San Pedro River written by Juliet C. Stromberg and published by University of Arizona Press. This book was released on 2009 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: contributors - biologists, ecologists, geomorphologists, historians, hydrologists, lawyers, and political scientists - weave together threads from their diverse perspectives to reveal the processes that shape the past, present, and future of the San Pedro's riparian and aquatic ecosystems. They review the biological communities of the San Pedro and the stream hydrology and geomorphology that affects its riparian biota. They then look at conservation and management challenges along three sections of the San Pedro, from its headwaters in Mexico in its confluence with the Gila River, describing legal and policy issues and their interface with science; activities related to mitigation, conservation, and restoration; and a prognosis of the potential for sustaining the basin's riparian system." "Complemented by a foreword written by James Shuttleworth, these chapters demonstrate the complexity of the San Pedro's ecological and hydrological conditions, showing that there are no easy --
Download or read book The Comparative Breeding Ecology of the Harris Sparrow Zonotrichia Querula and White crowned Sparrow Zonotrichia Leucorphrys in the Northwest Territories Canada microform written by Christopher John Norment and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1992 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral thesis addressing five aspects of the breeding ecology of Harris' Sparrows (Zonotrichia querula) and White-crowned Sparrows (Zonotrichia leucophrys) in the Northwest Territories, Canada: basic breeding biology, nest-site selection, nest attendance, foraging ecology, and temporal variation in life-history traits.
Download or read book Foraging Ecology of the Black throated Finch Poephila Cincta Cincta written by David F. Mitchell and published by . This book was released on 1996 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foraging Ecology of Black Turnstones and Surfbirds on Their Wintering Grounds at Bodega Bay California written by Carolyn Sue Connors and published by . This book was released on 1977 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foraging Ecology of Least Terns and Piping Plovers Nesting on Central Platte River Sandpits and Sandbars written by Mark H. Sherfy and published by . This book was released on 2012 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Management of Oak and Associated Woodlands written by Peter F. Ffolliott and published by . This book was released on 1992 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nesting and Foraging Ecology of Interior Least Terns on Sand Pits in Central Nebraska written by Erika C. Wilson and published by . This book was released on 1991 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
