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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.
1

Emergency fire rehabilitation of BLM lands in the Great Basin : revegetation & monitoring

McArthur, Ted O. 20 February 2004 (has links)
The Bureau of Land Managements (BLM) Emergency Fire Rehabilitation (EFR) policy was developed in 1985 to encourage protection of sites from soil erosion and to minimize potential changes in vegetation communities that may result from the dominance of weedy species. To achieve the goals of EFR policy, managers often used introduced perennial grasses that established quicker and competed better with introduced annuals than did native plants. However, the change of sagebrush-grass communities to communities dominated by introduced forage grasses has led to concerns for wildlife habitat. This concern contributed to a policy change encouraging the use of native species, when available, for rehabilitation projects. This study attempts to assess the effectiveness of BLM EFR projects in meeting the stated goals of the BLM EFR policy in the Great Basin. To do this, two field offices per state were randomly selected from an inclusive list of all Great Basin field offices. In 2001, we randomly selected three EFR projects per field office from those projects that used native species. On each project site, we used a common monitoring technique in association with monitoring techniques implemented by the BLM to assess if national EFR objectives were being met. A semi-structured survey was developed to determine the potential reasons why native and introduced plants were either used or not used, why monitoring was and was not proposed, and whether monitoring was implemented in rehabilitation projects. BLM monitoring techniques did not adequately evaluate EFR goal achievement. The time it took to implement any of the BLM methods did not differ significantly from the time needed to implement the common protocol on the two projects where BLM had implemented monitoring and used native plants (F[subscript 3,12]=1.63, P=0.23). Cost to implement the common monitoring technique was minimal and it directly measured aspects of stated EFR policy goals. Vegetative cover of all natives, seeded and volunteers, contributed half of the overall cover on EFR projects and was significantly higher than sown introduced species. Invasive species were intermediate and did not differ significantly from either the natives or the introduced. The seeded species were a subset of the native or introduced classes. Composition by cover between sown native, sown introduced, and invasive species did not differ significantly. Vegetation cover increased the surface soil stability 39% of the time and subsurface stability 56% beneath the vegetation. Respondents of the survey stated that they generally use more natives and more complex seed mixtures than they did historically. Many also stated that they prefer to use native over introduced species. However, most felt that introduced species are more effective in meeting EFR goals on the degraded sites than native species. All respondents would like to access a summarized report of other rehabilitation projects. The respondents were split between accessing it through the World Wide Web or through a written report. We believe that a common database could be created and maintained on the World Wide Web if a common sampling protocol was implemented. / Graduation date: 2004
2

The Bureau of Land Management and cultural resource management in Oregon

Cannon, William James 01 January 1979 (has links)
This thesis is an examination and description of the United States Department of the Interior, Bureau of Land Management's program for the management of cultural resources in the State of Oregon. The author has worked for the Bureau from March, 1975 to the present as a District cultural resource specialist. The major emphasis of the thesis is a description and explanation of the Bureau's cultural resource management program and its major problems in relation to the taxpayer and archaeologists.
3

Cultural identity and resident perceptions of recreational boating and the BLM : a case study from a gateway community / Influence of cultural identity on resident perceptions of recreational boating and the BLM : a case study from a gateway community

Torres, Tami McMillen 19 October 2001 (has links)
Conflict among residents of a gateway community regarding the breadth of perceptions of impacts from commercial whitewater rafting and the need for mitigating policies persists despite an intensive planning process and implementation of policies to mitigate negative effects. With an overarching purpose of exploring the nature of conflict, specific study objectives are 1) to characterize Pilar resident perceptions of recreation and the BLM, 2) to describe how Pilar as a community adjusts to recreation, and 3) to characterize Pilar resident expectations of BLM regarding recreation impacts. Methods include coding interview transcriptions, participant observation summaries, meeting minutes, and public comments on an environmental impact statement. Findings suggest that perceptions of recreational boating are influenced by factors such as occupation and place attachment and that these factors also determine group interaction and reactions to commercial boating and BLM policies. / Graduation date: 2002
4

The Wilderness Problem: A Narrative of Contested Landscapes in San Juan County, Utah

Banis, David 30 April 2004 (has links)
Wilderness preservation has been at the center of debates about public land policy for almost half a century, and nowhere has the controversy been more intractable than in Utah. Despite its vast expanses of unsetded and undeveloped red rock desert, managed primarily by the Bureau of Land Management (BLM), Utah has less designated wilderness than in any other state in the West. In this study, I focus on San Juan County in southeast Utah to study the conflict over the designation of wilderness. The controversy pits local residents and state politicians against state and national environmental groups, with the BLM shifting positions in between. I analyze and interpret the wilderness debate from three different perspectives. The fIrst explores the history of the Utah wilderness debate from the first BLM wilderness inventory in the 1970's through its re-inventory in the 1990's. I examine the influence of national, regional, and local forces such as institutional change within the BLM, in-fIghting among Utah-based environmental interest groups, and the sagebrush rebellion and county supremacy movements. The second perspective incorporates the spatial analytical techniques of geographical information systems to provide a relatively objective view of landscape characteristics used to defIne wilderness. I interpret the landscape as a continuum of varying degrees of wildness, a product of inherent naturalness and the influences of human impacts. Lastly, I examine the personal views of the meaning of wilderness through the words of actual participants in the debate. In an analysis of the statements of both county residents as well as the Southern Utah Wilderness Alliance, I explore the mental images and ideas that influence the ways in which people value and understand the desert environment.

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