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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
131

Maintaining a hill prairie ecosystem

Stoughton-Jackson, Courtney January 1997 (has links)
Fire has been an important influence on the structure and health of the North American grasslands for hundreds of years. In Jersey County Illinois, two natural loess hill prairies were studied to compare the effectiveness of varying management regimes. The purpose was to determine how a burn vs. a nonburn management regime enhances or hinders the establishment of the prairie grasses and forbs in a tallgrass hill prairie ecosystem. The variables studied included: the vegetational abundance, the frequency, and the biomass of the species that were present. In addition the soil's organic matter content and pH were measured. Overall, the Fire Road Prairie, or the unburned prairie, proved to be the community that was deteriorating and becoming unproductive. Whereas, the Osage Prairie contained a balance of grasses and forbs that were representative of a healthy and thriving community. The data supported the existing theory that a burn management plan does help the overall stability and productivity of a tallgrass ecosystem. / Department of Natural Resources and Environmental Management
132

The rise of ecological consciousness in Victoria: the Little Desert dispute, its context and consequences

Robin, L. January 1993 (has links)
The central event in this thesis is the Little Desert dispute, a 1969 controversy about whether land in western Victoria should be developed for agriculture or retained as natural bushland. The Little Desert dispute has lived on in the minds of protagonists and later environmentalists as a cultural icon and a ‘win’ for conservation. This pivotal event provides a framework within which the politics of nature conservation, ecology and land management can be examined. The thesis explores the role of ‘public science’ – science in government, bureaucracy and the community – in this context, as well as tracing the history of the science of ecology in post-war Australia. / The second focus of this thesis is ‘the rise of ecological consciousness’ – the rise of the political relevance of the natural world and emerging concerns about the place of people in nature. This is a multifaceted concept, and includes ‘ecological’ in both its scientific and philosophical guises. ‘Consciousness’ is studied I the individual, collective and political senses. / The Little Desert dispute occurred just as ecological consciousness was beginning to rise in Australia and throughout the western world. The resolution of the dispute through the establishment of the Conservation Council of Victoria and the Land Conservation Council, in 1969 and 1970 respectively, was played out against a backdrop of changing environmental values and systems. The dispute had antecedents in diverse utilitarian, scientific, aesthetic and romantic conservation traditions. It was these values that motivated the leading protagonists, who were conservationists but not environmentalists. However, many environmentalists today look back on the Little Desert dispute as the beginning of the new ‘ecologically conscious’ era. The contribution of earlier conservationists to the environmental movement is often overlooked in environmentalist literature. Through examining closely the role of science and scientists in land management, this thesis explores some of the continuities as well as the discontinuities of the ‘environmental revolution’ in Australia.
133

Securing the earth: contested discourses of an earth observation industry /

Neil, Ross M., January 1900 (has links)
Thesis (M.A.) - Carleton University, 2005. / Includes bibliographical references (p. 255-267). Also available in electronic format on the Internet.
134

The integration of nature conservation and community development in Nepal's protected natural areas and buffer zones

Ryan, Robert J. January 2008 (has links)
Thesis (Ph.D.)-- University of Western Sydney, 2008. / A thesis submitted to the University of Western Sydney in fulfilment of the requirements for the degree of Doctor of Philosophy, School of Natural Sciences, College of Health and Science. Includes bibliographies.
135

La conservation de la nature dans une perspective de développement durable : le cas du Costa Rica /

Marin Léon, Rolando. January 1990 (has links)
Mémoire (M.E.S.R.)--Université du Québec à Chicoutimi, 1990. / Document électronique également accessible en format PDF. CaQCU
136

Agricultural buffer criteria for the city of Arroyo Grande a professional project /

Pennebaker, Laura A. Wack, Paul. January 1900 (has links)
Thesis (M.S.)--California Polytechnic State University, 2009. / Title from PDF title page; viewed on July 14, 2009. Major professor: Paul Wack, AICP. "Presented to the faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the degree of Master of City and Regional Planning "May 2009." Includes bibliographical references. Will also be available on microfiche.
137

Translating ecosystem science into ecosystem management and policy : a case study of network formation /

Antypas, Alexios R. January 1998 (has links)
Thesis (Ph. D.)--University of Washington, 1998. / Vita. Includes bibliographical references (leaves [229]-240).
138

Soil hydraulic properties as influenced by grass and agroforestry contour buffer strips /

Seobi, Tshepiso. January 2004 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2004. / Typescript. Vita. Includes bibliographical references). Also available on the Internet.
139

Bioremediation capacity of five forage grasses for Atrazine, Balance (Isoxaflutole) and nutrient removal /

Lin, Chung-Ho, January 2002 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2002. / Typescript. Vita. Also available on the Internet.
140

Bioremediation capacity of five forage grasses for Atrazine, Balance (Isoxaflutole) and nutrient removal

Lin, Chung-Ho, January 2002 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2002. / Typescript. Vita. Also available on the Internet.

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