http://hdl.handle.net/1957/1721 http://ir.library.oregonstate.edu/dspace/retrieve/6826 http://hdl.handle.net/1957/1721 Search the Channel search http://ir.library.oregonstate.edu/dspace/simple-search http://hdl.handle.net/1957/8962 Title: Derivation of near-shore bathymetry from multispectral satellite imagery used in a coastal terrain model for the topographic analysis of human influence on coral reefs <br/> <br/>Abstract: The analysis of material and energy exchange between the marine and terrestrial components of island ecosystems enables research into the impact of human population and land use on the health of coral reef habitat. Satellite and acoustic remote sensing technologies enable the collection of data to produce high resolution bathymetry for integration with terrestrial digital elevation models (DEMs) into coastal terrain models. An integrated terrain surface that incorporates the land-sea interface, grounded by a geographic information system, is a powerful analytical tool for geomorphic studies of watersheds and coastal processes. The island of Tutuila, American Samoa is an ideal case study due to its high relief terrain, data availability and local interest in impacts to coral reef resources. The Tutuila model integrates a USGS DEM, multibeam bathymetry from 15 to 500 m and near shore bathymetric data from 0 to 15 m derived from IKONOS satellite imagery. The high spatial resolution of IKONOS imagery is suitable for detection of features with subtle relief and intricate structure. Shallow water bathymetry is derived by quantifying the relative attenuation of blue and green spectral band radiance as a function of depth. The procedure used to derive bathymetry, Lyzenga (1985), is identified as the most effective of several proposed in the recent literature. The product is error-checked using control points extracted from multibeam sonar data and collected during recent field surveys, as well as terrain profiles. The coastal terrain model provides morphological detail of fine resolution and high accuracy for terrain and land use analysis to enhance the study of ecosystem interconnectivity and the effects of anthropogenic inputs to coral reef habitats. Subsequent topographic analyses of the Tutuila model use drainage patterns to identify contiguous marine/terrestrial basins within which the marine environment is most directly impacted by land use through freshwater inputs from affiliated catchments. Human population density serves as an indicator of intensified land use and urbanization, which has been shown to increase pathogen and sediment loads in runoff, while percent coral cover, coral colony density and coral genera diversity are used as indicators of reef health. Spatiotemporal correlation analyses of population density against the three reef health indices within each of the marine/terrestrial basins reveal a decline in reef health associated with increased population density. This paper integrates and builds upon established methods of satellite imagery analysis and terrain modeling to create the Tutuila coastal terrain model and uses it to refine the scale of other studies linking human terrestrial activities to the physical condition of coral reefs. <br/> <br/>Description: Graduation date: 2009 http://hdl.handle.net/1957/8835 Title: Historical landscape reconstruction and perceptual geography of Mount Hood, Oregon <br/> <br/>Abstract: This research seeks to understand the influences of perception on land use around the Mount Hood area of Oregon and evaluate how it has evolved over the past 4,000 years. The study addresses three specific questions: 1) How has the study area evolved over time into the modern landscape? 2) What land use practices have developed in response to various public perceptions of Mount Hood? 3) How have the land uses impacted the landscape and physical environment? This in-depth analysis of the historic landscape describes the effect of external environmental stimuli and local culture on land use in this region of Oregon. This study develops a classification system to describe how perceptions of Mount Hood have changed over time, and also investigates associated land use within each of these categories. Eight perception categories are employed: Reverence, Respect, Obstacle, Exploration, Livelihood, Economic Development, Conservation and Preservation, and Research. This historic landscape reconstruction employs comprehensive acceptance, integration, and comparison of various source materials to minimize bias. First, primary sources and commentary on these sources allow for an understanding of the local population’s general attitude toward the landscape. Second, perceptions of the local landscape were inferred through an analysis of land use activities. The various perceptions of the local population towards Mount Hood and the landscape within the Mount Hood Land Use Planning Unit Boundary have guided land use choices through time. These uses have resulted in significant changes to the landscape over the period of recorded history. <br/> <br/>Description: Graduation date: 2008 http://hdl.handle.net/1957/8714 Title: Criteria for the selection of maps for a basic college map collection including an annotated carto-bibliography <br/> <br/>Abstract: A long standing problem has been the question of what maps to select for acquisition in a college map library. This thesis addresses the problem and provides a carto-bibliography of basic maps for a map library. Following a brief review of pertinent literature, criteria for evaluation and selection of maps are identified and analyzed. Using a questionnaire persons responsible for selections of maps for all United States college map libraries were surveyed to determine the degree to which the criteria were considered to be important in the selection process for map acquisition. Of 249 mailed 133 questionnaires were returned. The results show that presumed reliability of the map source was considered most important, followed by scale and date. The criteria of size and map projection were noted as seldom considered. The survey shows that the typical American college map library contains 50,000 to 100,000 maps with no special emphasis other than United States maps, and is in charge of a map librarian on a part time basis. As an application of the selection criteria a carto-bibliography was compiled suggested as a core for building a college map library. The carto- bibliography included as a major part of the thesis was compiled by examination of thousands of maps in three major map libraries, The Library of Congress, University of Wisconsin - Madison and University of Florida. The carto-bibliography does not presume to include all maps but rather to suggest a sound base for building. A special section is on Florida as an example of types of maps generally available for each state and local area. <br/> <br/>Description: Graduation date: 1978 http://hdl.handle.net/1957/8713 Title: A search for solutions to conflicting demands of outdoor recreation in the Oregon dunes coastal environment <br/> <br/>Abstract: Conflict and competition between outdoor recreational activities is increasing in intensity. Thus, management agencies and persons responsible for regulation of outdoor recreation areas have become increasingly concerned and are seeking appropriate means for amelioration of the intensifying problem. This research was designed to seek better understanding of conflicts and incompatabilities as perceived by recreationists. The research utilized a questionnaire to develop a body of original data on participants' perception of compatibility or non-compatibility of outdoor recreational activities and their attitudes toward degree and kinds of existing and needed resource development. As the case study area for this investigation, the sand dunes coastal environment of Central Oregon was selected. Topics in the questionnaire covered perception of recreational development, attitudes toward recreational land and facility ownership, perception of pollution conditions and perception of and attitudes toward recreational activities in terms of conflict or harmony with each other and with the natural environment. Analysis of the 428 questionnaires completed revealed some surprising responses. Perhaps the single most important finding from the user survey was that the majority of the respondents viewed the coastal zone as underdeveloped. Additional development was desired, and the kinds preferred reflected the type of accommodation and recreational facilities that respondents were already using. Tent and trailer parks, picnic grounds and low-cost motels were the preferred kinds of developments based on responses to the questionnaire. The list of recreational activities reported as being enjoyed in this coastal zone was long and varied; however, the greatest number of preferred activities were environmentally-oriented and definitely related to the marine and sand dune environments. Motorbiking in particular, dune buggying, tavern or lounge visiting and nightclubbing, hunting and waterskiing were often mentioned as bothersome, annoying activities. Most respondents implied acceptance of regulation of user activities and zoning for land use. It was the consensus among respondents that motor vehicles should be restricted to prescribed areas of the sand dunes and beach. Different accommodational uses of campgrounds was not generally desired as long as vegetation buffers were used to separate sites. When perception of air, water or noise pollution was questioned and a combined pollution index developed, respondents indicated pollution to be only slight and lumbering and associated industries were reported as the major causes. Human factors, pollution and the weather were the most frequently mentioned unappealing features of this coastal zone. Throughout the littoral the numbers of people at recreation sites were reported as just about right. Increased recreational use and development appears to be inevitable and in some cases perhaps even desirable within this coastal zone. Consequently, viable management techniques need to be developed so as to minimize activity conflicts and to maintain natural environment harmony in the area. <br/> <br/>Description: Graduation date: 1974; Presentation date: 1973-06-20