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 20 of 103 for “"Environmental Indicators and Impact Assessment"”.
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Assessment of Soil Properties and Vegetation in a Mounded Native Tallgrass Prairie with an Aquic and Udic Soil Moisture Regime in the Ozark Highlands Region of Northwest Arkansas
… ecosystem due to conversion to agricultural land. Prairie mounds are unique soil features still present in remnant native tallgrass prairies across the United States. The main objective was to determine the effects of soil moisture regime (i.e., aquic and udic), mound position, (i.e., mound …
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Recreation Ecology of Colorado Fourteeners: An Assessment of Trail Usage and Impacts
… recent years, raising important sustainability and management questions. Moreover, groups managing the peaks operate with major capital constraints so their efforts need to be informed, prioritized, and efficient. This paper gauges the dynamics of trail usage, explanatory variables, and …
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Zero-Waste Planning at Higher Education Institutions: A Case Study of Western Kentucky University
… several interrelated factors, policy barriers, and infrastructural fundamentals, which each influence the efficiency of waste management structures (WM) at universities. In this work, the role of the aforementioned factors in implementing an efficient sustainable WM program at higher education …
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What Role Can CEQA Play in Reaching GHG Emissions Reductions Goals Set Forth in AB 32 – An Analysis of CEQA, AB 32, and Recommendations for CEQA Reform
… emissions to 1990 levels by 2020. The California Environmental Quality Act (CEQA) is an environmental assessment law adopted in 1970 that requires lead agencies (private developers, public agencies, etc.) to consider and disclose the potential significant environmental impacts of new development …
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Assessment and Characterization of Microbial Communities in Salt Affected Soils on Galveston Island
<p>After Hurricane Ike in 2008, Galveston Island was flooded with sea water that left the soil and groundwater of the island with elevated sodium concentrations. As part of a long-term study that aims to restore plant life to the island, various soil amelioration techniques are being evaluated. …
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How do fine sediments and Hangman Creek discharge affect benthic macroinvertebrates in the Spokane River?
… deposition in stream beds is generated by land use practices such as timber harvest, agriculture and urbanization. Hangman Creek is a major tributary and source of fine sediment to the Spokane River. Benthic macroinvertebrates play a crucial function in food webs as an important source of …
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Effects of Grazers and Elevated Temperature on the Dynamics of a Wastewater Algal Treatment System
… remove excessive nutrients from wastewater and prevent eutrophication. However, the performance of ATS could be strongly affected by environmental factors. This study examined (1) the effect of grazers on nutrient removal rates and (2) the effect of 1.7 °C increase in temperature on algal …
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A Comparison of Natural, Living, and Hardened Shorelines Ability to Prevent Coastal Erosion and Maintain a Healthy Ecosystem
… Gulf Coast shoreline, since its’ low elevation and the Loop current make it vulnerable to sea level rise. I focused on two manmade methods, hardened, and living shorelines, of coastal protection for when the natural marsh suffers excess erosion rates. Living shorelines are a suite of shoreline …
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Removal of Heavy Metals from Drinking Water by Adsorption onto Limestone with a Focus on Copper and Aluminum Applications
<p>Elevated levels of arsenic and other heavy metals like copper, aluminum, zinc, and selenium in drinking water are found to have deleterious effects on human health. Hence, finding methods for reducing their levels is critical. Iron-coated limestone is used as an adsorption material for the …
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Effects of Pier Shading on Salt Marsh Plants in Mississippi
… environments that are valuable to both humans and wildlife. As saltmarshes are under threat from erosion, sea level rise, and human development, efforts should be made to conserve them. The vegetation that occupies these environments are vital to the continued preservation of saltmarshes. This …
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Geomorphologic evolution of a rapidly deteriorating barrier island system with multiple sediment sources: Eastern Isles Dernieres, Louisiana, 1887 to 2006
<p>Trinity, East, and Wine Islands make up the eastern half of the Isles Dernieres barrier arc in south-central Louisiana. Formed following the abandonment of the Lafourche delta complex, subsidence and storm erosion have led to rapid deterioration of the system. Since 1887, the land area of the …
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Geochemical Impacts From Permanganate Oxidation Based on Field Scale Assessments.
… sites to determine whether there are long term impacts on groundwater quality due to the introduction of the oxidant into the subsurface. A second objective is to determine if manganese concentration can be predicted by trends in specific pre and postoxidation monitored parameters (i.e., pH and …
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Characterizing Wetland Hydrology, Chemistry, And Soils For An Endemic Crayfish, The Piedmont Blue Burrower
… groundwater hydrology, water chemistry, and soil properties were assessed to determine their importance for the state-listed endangered, primary burrower <em>Cambarns harti</em>. Groundwater hydrology and chemistry were monitored from shallow wells installed among <em>C. harti</em> …
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The Effect of Sample Size on Rapid Bioassessment Scores and Management Efficiency
<p>The rapid bioassessment method for stream bio monitoring generally uses a fixed count of 200 macro invertebrates as the standard subsample size. This number has been argued to be too small to provide accurate estimates on the richness of macro invertebrate communities and is believed to give …
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Aerial Mineral and Organic Particulate Deposition in East Texas
… the monthly amount, particle size distribution, and chemical composition of particulate deposition in East Texas over a one-year period. It also recognized the seasonal patterns of this deposition as well as its primary origins as either mineral or organic particulate deposition.</p> <p>The study …
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Refraction Microtremor Analysis of Areas Surrounding California State University San Bernardino
<p>The San Andreas Fault stretches for over 800 miles through California. Along the foothills of the San Bernardino Mountains, areas in close proximity to the San Andreas Fault Zone may be subject to site amplification of ground motion caused by seismic activity via wave propagation through the …
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Availability of Organochlorides and Accumulation in Populations of Tadarida brasiliensis (Free-Tailed Bat) and Eptesicus fuscus (Big Brown Bat)
… proved to present many problems to the health and welfare of other organisms. Due to these problems, especially declines in wildlife populations, organochlorides were restricted in the 1970's and a majority of them were banned in the mid to late 1980's. The effects of organochlorides on bats …
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