Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"desert environments"”.
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MULTIDISCIPLINARY WORK TO DETERMINE HYDROLOGY OF ARID LAND SPRINGS AND HOW SPRING WATERS INFLUENCE WATER QUALITY AND ECOSYSTEM HEALTH FOR DESERT ENVIRONMENTS
In the desert southwestern United States, water resources are stressed due to anthropogenic use, drought and climate change. Arid land spring sites are considered hotspots for biodiversity, providing refugia to aquatic habitats during dry seasons. To quantify the importance of desert land springs, …
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A study of urban form; its analysis and its implications for sustainable settlements in desert environments, with Walvis Bay as a case study
… are urban forms that are appropriate to the desert environment, and that such forms together with basic design principles, can provide substantive design-oriented steps towards the environmental goal of sustainability in an urban context. The term "sustainability" has often been applied at a …
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Multidimensional Spatial Characterization of Plant Invasions in 'El Pinacate y Gran Desierto de Altar' Biosphere Reserve
… worldwide. Their effects in the Sonoran Desert ecosystems are a growing concern among ecologists and land managers. We hypothesized that highly dynamic desert environments are unstable, therefore more vulnerable to invasion by exotic plant species. To test this hypothesis we used a …
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Sustainable landscape planting in the Negev Desert
… for using the native plants of the Negev Desert in southern Israel in the Negev, which will help to promote more sustainable landscape development in the region. The study combines the data collection in the field of 163 plant species located in the Negev desert and the literature review …
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Life history strategies in variable environments: Demography, delayed germination and bet-hedging in a desert annual Plantago
… and life history strategies. Annual plants in desert environments are subject to large fluctuations in precipitation, both within and among years. I used a combination of field and laboratory studies to characterize variability in the populations dynamics and life history of a desert winter …
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Impact of military maneuvers on Mojave Desert surfaces: A multiscale analysis
… Minor stresses on surface materials in sensitive desert landscapes can greatly increase the rate and character of erosion. The National Training Center, Ft. Irwin, located in the middle of the Mojave Desert, California, provides a study area of intense off-road vehicle (ORV) activity spanning a …
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Does the availability of shade limit use of water troughs by desert birds?
… continue to rise over the next few decades. Hot desert environments are particularly at risk because they experience high environmental temperatures, scarce vegetation, low productivity and unpredictable water sources. Endotherms such as birds face the challenge of maintaining a stable body …
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Handling the heat: keeping water available for birds of the Tankwa Karoo Desert
… species are therefore at risk, particularly in desert environments where they are already operating near physiological limits. Desert air temperatures in the subtropical latitudes will rise by 3°-5°C by the end of the century. When air temperatures are higher than body temperature, birds must …
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A Diagnostic Technique for Particle Characterization Using Laser Light Extinction
… both commercial and military, in hostile desert environments have increased risks of micro-sized particle ingestion into engines. The probability of increased sand and dust ingestion results in increased life cycle costs, in addition to increased potential for performance loss. Thus, …
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Monitoring desertification in south west Tripoli using multi-temporal remotely sensing data and GIS
… change detection and mapping in arid/semi-arid environments, which can be used and analysed to extract information relevant to the understanding of useful information for the study of desert environments and desertification monitoring, assessment and mapping. In Libya, the vast agricultural …
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Advancing UAV-Based Remote Sensing and Machine Learning for Ecological Monitoring, Habitat Disturbance Detection, and Forensic Science in Arid Landscapes
… camera systems at study sites within the arid deserts of the western United States to demonstrate low-cost, user-defined, scientific, and civil applications. In chapter one we use a UAV-based multispectral camera to classify vegetation with a goal of detecting individual plants of the …
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Cultivating Curriculum: How Investing in School Grounds, the Streetscape and Vacant Land as Urban Ecosystems can Address Food Security, the Community and Institutions of Public Education
… comprehensive global issues brought on by food desert environments and a child's perspective about their own health? This thesis explores the possibility of casting the urban ecological net wide- envisioning a timescale for transforming public spaces and school grounds using green infrastructure …
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Spatial Patterns and Population Performance of Mule Deer: Responses to Water Provisioning in Mojave National Preserve, California
… water developments on wildlife. In a study of desert sheep (<italic>Ovis canadensis nelsoni</italic>) in Arizona, USA, Broyles and Cutler (1999) argued that desert sheep obtained adequate water to meet metabolic demands from available forage and, thus, were not reliant on available free-water. …