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 19 of 19 for “"coastal dunes"”.
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Pedogenesis on the Sefton Coastal Dunes, NW England
… sand and mobile dune communities into ‘frontal dunes’ and fixed dune community, pasture, scrub, deciduous woodland and coniferous plantations into ‘hind dunes’, separating these topsoil environments from heath and slack communities. Factor analysis also identifies linkages between …
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Integrated Monitoring and Eco-Morphodynamic Modeling of Coastal Dunes
L'abstract è presente nell'allegato / the abstract is in the attachment
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Application of Ground Penetrating Radar to Study the Internal Architecture of Coastal Dunes, North Padre Island, Texas
… under the Open Beaches Act. Therefore, sand dunes are constructed in these areas by building fences, planting vegetation, or importing sand. This study examines the internal structure and grain size variations of a maintained dune and a natural dune on Padre Island, Texas. The maintained dune …
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Geology of Aeolian and marine deposits in the Saldanha Bay region, Western Cape, South Africa
… over this period, the evolution of the coastal plain since the Cainozoic remains poorly understood. The aim of this thesis is to offer a multidisciplinary study of the evolution of coastal deposits in the Saldanha Bay area, along the southern part of the west coast. The environments …
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Advancements for the Numerical Simulation of Free Fall Penetrometers and the Analysis of Wind Erosion of Sands
The coastal population is growing, putting extra stress on coastal sediments and protection features, such as beach dunes. Moreover, global warming will increase the frequency of storms, and coastal dunes and other defense infrastructure will be subjected to increased erosion and scouring, …
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Patterns of parasitism and emergence in the gall midge Dasineura Dielsii (Diptera: Cecidomyiidae) : a biological control agent of Acacia cyclops in South Africa
… an invasive alien plant that invades fynbos and coastal dunes. Several acacia species are grown commercially in South Africa and this has limited biocontrol agents to those that reduce only reproductive capacity. Dasineura dielsii was released in 2002 as a biocontrol agent for A. cyclops. This …
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Environmental Impacts on the Development and Dune Activity of Oxbow Lake along the Southwest Coast of Lake Michigan at Saugatuck, Michigan USA
Coastal dunes of Lake Michigan and corresponding down-wind lakes are studied for links between dune activity and climatic forcing; to date, little is certain about climate control on dune activity. By unveiling relationships between climate variables and dune activity, it becomes possible to …
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A study of forest ecosystem development
… Palmerston North on recently consolidated sand dunes (Cowie & Smith, 1958). Coastal dunes have been stabilised with marram grass and lupin and planted with P. radiata in successive stages, to prevent drifting over adjacent farmland. The district has a mean annual temperature of 12.3°C and an …
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Evaluating the use of acoustic monitoring for surveying tropical birds
… between SRS and point counts was lower in coastal dunes than secondary and mature semi-evergreen forests, at least 92% of the species were shared between the two methods in all habitats. Similarly, the multi-method occupancy models demonstrated that SRS yielded detection probabilities …
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Population Biology Of A Coastal Dune-Dwelling Spider (Arctosa Sanctaerosae) Along The Hurricane Disturbed Northern Gulf Of Mexico Coast
… In addition to anthropogenic disturbance to this coastal region, hurricanes are an additional and natural perturbation to the ecosystem. This habitat has seen a number of major tropical storms over the last decade and I have sought to explore the impact of habitat destruction and storm-induced …
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Estabilização de areia com adição de cal e cinza volante
… that this process might have, in the coastal region where sand dunes are present. The experimental results from laboratory are presented in tables and graphs, and are thereafter discussed. Three (3) mixtures were studied having: 10%, 17,5% and 25% fly ash, all of them with 6% hydrated …
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Sea + Survival: choreographing dune systems to defend against sea-level rise
… storm surges (C40 Cities, n.d.). In particular, coastal towns and cities are under immense pressure as major solutions are needed to ensure the resilience of these spaces. Langebaan, in the Greater Saldanha Region along the Western Cape, South Africa is suffering from the effects of poorly …
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Mapping and Reconstructing the Paleotsunami Record in Queule, South-Central Chile
… landward of a sand spit capped by eolian sand dunes. The uppermost sand layer is attributed to the tsunami from the Mw 9.5 1960 earthquake. The sand layer is widespread, tabular, oxidized, thins landward, and generally occurs at a depth of <20 cm. The spatial distribution of the deposit …
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Systematics and Evolution of the Californian Trapdoor Spider Genus Aptostichus Simon (Araneae: Mygalomorphae: Euctenizidae)
… is a trapdoor spider that is endemic to the coastal dunes of southern California and is recognized as a single species on morphological grounds. Mitochondrial DNA 16S rRNA sequences demonstrate that populations from San Diego County, Los Angeles County, Santa Rosa Island, and Monterey County …
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The Use of Remote Sensing to Map and Monitor Coastal Dune Vegetation Change at Southampton, Ontario, Canada
Coastal dune ecosystems in the Great Lakes Basin are fragile, rare ecosystems that are under increasing threat due to anthropogenic and natural forces. The Chantry Dune system in Southampton, Ontario is one of five major dune systems along the eastern shores of Lake Huron. The dune complex provides …
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Biology and conservation status of Juniperus macrocarpa Sm. in Sardinia
… habitat; European priority habitat) in Sardinian coastal dunes, as well as to achieve results useful to support in situ and ex situ conservation actions. In particular, the specific aims of the thesis were: (1) to analyse morphological variation in seeds of Mediterranean Juniperus taxa (at inter- …
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EFFECTS OF FOREST SUCCESSION ON RAM'S HEAD LADY'S SLIPPER (CYPRIPEDIUM ARIETINUM) POPULATIONS IN THE GRAND SABLE DUNES, MI
… is rare across its range, but the Grand Sable Dunes (GSD) on the southern shore of Lake Superior harbors the largest known population in North America. It thrives in jack pine (Pinus banksiana) islands throughout the dunes. In this study, I updated the population status of ram’s head lady’s …