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 18 of 18 for “"Degraded areas"”.
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Geomorphology and rehabilitation of erosion-degraded areas using soil bioengineering in the Rio Bacanga basin, São Luís, Maranhão State
… experimental station and the rehabilitation of a degraded area using soil bioengineering techniques. The adopted methodological procedures included: 1. Cartographic and bibliographic surveys. 2. Mapping of the hypsometry, slope, land use, rainfall index and geomorphology of the Bacanga basin, …
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Análise de áreas desertificadas nos Cariris Velhos - PB.
… by a sort of degradation likely to occur in areas of arid, semiarid and dry sub-humid, resulting from climate change and human attitudes, showing a direct relationship to vegetation and soils. For its development, three techniques were used in order to analyze the behavior and dynamics …
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Ocupação urbana e degradação ambiental na comunidade casa branca – Bayeux/PB: uma abordagem geográfica.
… between Man and Nature. The metropolitan areas through its cities have attracted a high number of population in the search for jobs, housing, services and even leisure. On the other hand, the absence of public policies aggregated sometimes the lack of areas for housing increases housing …
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Uso de sensoriamento remoto e reconhecimento pedológico para identificação de ambientes na sub-bacia do rio Pacuí, submédio São Francisco
A necessidade de reconhecimento do vasto território da bacia do rio São Francisco para a definição de áreas prioritárias para a aplicação de ações de recuperação e preservação ambiental motivou a proposição deste trabalho.Buscou-se encontrar métodos de baixo custo para a execução desta tarefa no …
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THE AUTECOLOGY OF THE MEADOW THISTLE (Cirsium dissectum L. Hill) ON DEVON RHoS PASTURES, WITH PARTICULAR REFERENCE TO THE EFFECT OF MAJOR ENVIRONMENTAL VARIABLES ON THE POPULATION DYNAMICS
… the farmed landscape. Protection of remaining areas and restoration of degraded areas has become a priority with organisations concerned with the conservation of biodiversity in the U.K. The research described in this thesis provides an insight into the community dynamics of one particularly …
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Caracterização biométrica de frutos, emergência e vigor de sementes de Cryptostegia madagascariensis bojer ex decne., espécie invasora no bioma caatinga
… form massive autorregenerantes mainly in degraded areas and the banks of watercourses and temporary ponds. The research objective was to evaluate the biometric characteristics of fruits, emergence and vigor of C. madagascariensis, in order to understand the processes of occupation by this …
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Long-term monitoring of vegetation dynamics in the Goegap Nature Reserve, Namaqualand, South Africa
… succulent flora, and is one of only two arid areas to classify as a global hotspot of biodiversity. The Goegap Nature Reserve, east of Springbok, lies in the Upland Succulent Karoo. After all the livestock were removed and the reserve fenced in 1969, a long-term monitoring project was …
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A multi-criteria decision support framework for environmental impact and vulnerability assessments of oil activities: a case study of the Niger Delta
… a multidisciplinary approach, for prioritising areas that have been degraded by oil production and transportation activities. The report first establishes the plausible reasons contributory to the degeneration of the region to its present state, despite existing legislative and regulatory …
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Characterization of Soundscapes in Shallow Water Habitats of the Florida Keys (USA) and Their Influence on the Settlement of Larval Fish and Invertebrates
… (2) quantify larval settlement within healthy, degraded, and restored hard-bottom areas to test whether habitat degradation altered larval settlement (Chapter 3); (3) empirically test the role of sound in promoting larval recruitment to hard-bottom habitat (Chapter 3); and (4) employ the passive …
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Status da vegetação de caatinga após a implantação das obras de integração do Rio São Francisco com bacias hidrográficas do nordeste setentrional
… seral stages, since these species colonize degraded areas of the border. We observed the formation of two large groups, which were located at a distance of approximately 0-100m, almost completely matched the regenerating individuals, and the other was inserted in the 100m to 225m which was …
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Serviços ecossistêmicos de provisão prestados pela caatinga: uma análise do uso e cobertura da terra do município de Acari
… of the landscape was observed through areas of pasture and temporary agriculture, throughout the flattened area. In this way, the lowered erosion surface showed a high rate of environmental degradation which, despite presenting a relevant diversity of plant species, the levels of …
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Fragments of spaces along the roads: recycling deleted areas
… quality of life for people everywhere: in urban areas and in the countryside, in degraded areas as well as in areas of high quality, in areas recognised as being of outstanding beauty as well as everyday areas[...]”. The starting point of this research is the innovative definition of landscape, …
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The value of animal behaviour as a bio-indicator of restoration quality
… how restoration is done. Efforts to ‘beautify’ degraded areas through the planting of fast growing non-native species is no longer thought of as responsible restoration practice. We have a better understanding of ecological thresholds, the creation of novel ecosystems and the ways ecosystems …
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Assessment of Woody Biomass and Solar Energy Resources with Remote Sensing and GIS Techniques : A Regional Study in the High Mountains of the Eastern Pamirs (Tajikistan)
… it would result in a considerable mitigation of degraded areas and an amplification of carbon sequestration. This demonstrated the benefits of solar photovoltaic energy as an alternative renewable energy resource in peripheral arid high mountains. This dissertation provided contributions to the …
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Clonal integration in Ochthochloa compressa under extreme environmental conditions
… daughter ramets did not establish in the best areas, indicating that the spread and expansion of stolons in the O. compressa occurs randomly. Experiment 2. I investigated the effects of the addition of fertilizer to mother and daughter ramets, including addition of nutrients to daughters …
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An active spatial database for the multi-scaling of the National Park of Azagny's geographic data
… left many unexploited (or more or less degraded) areas of different sizes that still stand in the landscape. Regeneration within and outside of protected areas still occurs. Nonetheless, the country’s authorities and decision-makers do not considered those forests and the wealth they …
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Vegetation dynamics in a semi-arid freshwater wetland: a measure for restoration success
… vegetations’ natural regeneration, in previously degraded wetlands of semi-arid regions is essential to measure restoration success. Nylsvley freshwater wetland is the largest inland flood plain found in the semi-arid region of South Africa and a Ramsar site of worldwide conservation importance. …
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Arid land condition assessment and monitoring using mulitspectral and hyperspectral imagery.
… had significantly higher MSDI values than non-degraded reference areas. Comparison of two vegetation indices, the Normalized Difference Vegetation Index (NDVI) and Perpendicular Distance vegetation index (PD54), which were used as reference indices, showed that the PD54 was more sensitive than …