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 29 for “"Geographic Scale"”.
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Geographic distribution of tree species diversity of the United States reveals positive association between biodiversity and site productivity
… and thus studies that incorporate greater geographic coverage and structural complexity are much needed. Here, I compiled ground-measured data from 436,177 Forest Inventory and Analysis (FIA) plots of every U.S. state except Hawaii to map current basal area, site productivity, and tree …
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Operationalizing Scale in Watershed-based Stormwater Management
… out based on jurisdictional lines at the parcel-scale. Because WSM considers the watershed as a total unit, this method is considered to be more effective in reducing problems associated with stormwater management including environmental degradation and flooding. However, larger watersheds …
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Population genetics of species on the genera Tursiops and Delphinus within the Gulf of California and along the western coast of Baja California.
… the population and putative species level. Fine-geographic scale structure was detected in coastal bottlenose dolphins, which seemed to be strongly associated to the biogeographic subdivision of the Gulf of California and western coast of Baja California. This result suggests that gene flow among …
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The geography of strategy : an exploration of alternative frameworks for transportation infrastructure strategy development
… transportation modes and other sectors, and the geographic scales controlled. We analyze the behavior of a range of alternative frameworks through a combined quantitative-qualitative approach, using Portugal's highway transportation system as the context. Drawing on strategy literature from the …
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Cooperative Infrastructures for Small Water Systems: A Case Study
… Water Standards (NPDWS) through economies of scale. Specifically, the research involves a market analysis of the factors which influence costs, operational efficiency, revenue, the exchange of technical information, operational capacities, and, thereby, the number of NPDWS violations in those …
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Tertiary marine prosobranchs: larval dispersal and geographic range
… marine invertebrate species to establish great geographic ranges; several studies along a single margin of an ocean basin have supported this proposal (Shuto, 1975; Hansen, 1978). This study makes use of the fossil record to examine larval dispersal patterns on a larger geographic scale: across …
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Marking Territory: demarcation of the DRC-Zambia boundary from 1894 to the present day
… than on clearly defining boundaries at the local scale. The division of territorial sovereignty through boundaries was known only at a small geographic scale. However, in 1927 a second Anglo-Belgian boundary commission was sent to demarcate what was by that time the Belgian Congo-Northern Rhodesia …
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Genetic variation in the European rabbit and rabbit flea in the British Isles
… was suggested that rabbit movement over the geographic scale of the study is low. However, the flea data indicates that some movement may occur, and it was hypothesized that this may occur in the form of single rabbit movements (perhaps as a result of expulsions of young males from …
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Religious and secular places: understanding the changing geographies of religion in Ireland
… private and public space break down on some scales. However, in connecting the micropolitical with a broader spatial politics in these examples, how we conceive of scale remains important. The political significance of spatial practice on one scale is often subsumed within other scales. Using …
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Investigation Of The Use And Application Of Passive Sampling Methods For Understanding Potential Sources Of Mercury To Western United States
… however little work has been done on an expanded geographic scale. To address this, our study included sampling locations on the coast of California, in the Sierra Nevada Mountains and on the eastern edge of Nevada in the Great Basin spanning elevations of sea level up to ~2800 m. Surrogate …
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Population and migratory dynamics of blacklegged ticks and the Lyme bacterium, Borrelia burgdorferi
Geographic range expansion and population growth of vector-borne pathogens are regulated by the migration of their arthropod vectors. Recent climate and land-use changes have produced alterations in the geographic range and population size of blacklegged ticks (Ixodes scapularis) and the pathogens …
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Population assignment of entrained migratory Westslope Cutthroat Trout in North Idaho
… dataset was greater than 95% depending on the geographic scale explored. All unknown migratory WCT were able to be assigned to a region within the study area—defined by dams and natural subbasin divisions—with a posterior assignment probability of at least 0.5 (50%). Of these, approximately 80% …
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Genetics and ecosystem effects of the invasive mussel Semimytilus algosus, on the West Coast of South Africa
… had significant ecosystem effects on a large geographic scale. Semimytilus algosus was first detected at Elands Bay in 2009 and by 2010 it occupied 500 km of the West Coast of South Africa from Groenriviermond to Bloubergstrand. Given the fact that it is an ecosystem engineer forming dense …
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Urban-Rural Disparities in Access to Covid-19 Testing Sites: The Impact of Funding Cuts in the Capital Region of Florida
… in relation to social vulnerability factors. The geographic scale for these analyses is at the census tract level. To accomplish these objectives, I (1) generated SoVI to measure social vulnerability, (2) calculated the drive-times from the population-weighted centroids of each census tract to the …
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Foraging, Feeding, Energetics, and Environment: Interactions Between Physiology and Ecology of Gila Monsters
… These analyses are then extended to a larger geographic scale, and the effects of both environmental variation (temperature) and individual variation (body mass) are used to simulate differences in resting energy use between four ecologically distinct populations of Gila monsters.Each of these …
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Assessment of the demographics and network structure of swine populations in relation to regional disease transmission and contro.
… the knowledge of swine populations. Current geographic datasets were assessed for accuracy and reliability. In the event of a foreign animal disease outbreak the usefulness of these datasets would be of prime importance, as they will dictate the distribution of resources. Additionally, the …
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Mobility Within Constraints: Gender, Migration, and New Spaces For Palestinian Women
… yet observing and debating the issues at the scale of competing states and nationalist forces hides the finer nuances of the conflict. This dissertation focuses instead at the geographic scale of the household and in the lived experiences of everyday life. The primary target group is young, …
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Built Environment and Risk of Obesity in the United States: A Multilevel Modeling Approach
… data sets and employing the state-of-art Geographic Information Systems methods. Several built environment factors including street connectivity, walkability and food environment, are for the first time measured across 48 contiguous states of the U.S., built from a fine geographic scale …
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Spatial and temporal structure of typhoid fever in Washington, D.C., 1895-1909: a geographic information systems exploration of urban health concerns
… These point locations are used to construct a geographic information system (GIS) displaying the spatial distribution of individual typhoid cases. The creation of this GIS allows for the investigation of urban typhoid at a localized geographic scale. The temporal resolution of the data and …
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Appalachia's new region-wide CDFI : building local community with global capital?
… regulatory barriers and industry economies of scale, institutional and individual investors ship most of Appalachia's capital out to major national financial centers, where it is disbursed around the world. These levels of exported capital stock dwarf the small volumes of community development …
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