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 59 for “"Conservation value"”.
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Assessing the conservation value and food system impacts of high tunnels
… of specialty crops the Natural Resource Conservation Service (NRCS) has launched the Seasonal High Tunnel initiative. This cost-share program provides farmers with a high tunnel intended to encourage the availability of locally grown fresh produce. Using mixed-methods research this thesis …
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The implications of improving the conservation value of field margins on crop production
… yields compared to cropping to the field edge. Conservation headlands generally contained greater amounts of weed biomass than fully sprayed headlands, but grain yields were not significantly reduced. Soil compaction affected yield in one of the field experiments, but not the other, where soil …
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Assessing the conservation value of wetlands and waterbirds with a focus on the winter rainfall region of South Africa
… and application of a new tool to assess the conservation significance of wetland avifauna. Termed the Waterbird Conservation Value (WCV) score, this method sums the proportion of each species' count relative to the global 1% threshold level for each species; the value obtained measures the …
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Investigating the conservation value of leopard population indices obtained through camera traps in the greater Kruger region of South Africa
… and how it can be helpful in informing leopard conservation and management.
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Road reserves as conservation assets : exploring the species of conservation concern and the ecological condition of the N7 road reserve
… focusing on the vegetation condition and conservation value of the reserve and adjacent farmland, and the plant species of conservation concern (Red List species) located within the reserve. The aim was to assess the conservation value of the reserve and identify areas of particular …
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Finding a cohesive and effective conservation in the Overberg - an experimental application of the agglomeration bonus
… region in the Western Cape is an area rich in conservation value. This region has another distinctive feature in that there are three different landowners adjacent to one another, each boasting land rich in biodiversity value. In the event that the land use practices of the landowners are in …
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Conservation genetics of conflict in the Asian elephant, Elephas maximus
… of genetic tools. This dissertation uses conservation genetics to evaluate major conflict and conservation issues for Asian elephants. The first study, in the Bago Yoma region of Myanmar, evaluates the impact of direct human-conflict in a high-density area of humans and elephants. Here …
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Nocturnal Lepidoptera of Midland Raised Bogs
… adapted plant and animal species and are of high conservation concern internationally. The aims of this study were to objectively assess the potential of macro-moths as active raised bog biodiversity indicators, to collate baseline information on the distribution of this fauna on threatened …
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The impact of grazing along an environmental gradient in the Kamiesberg, South Africa
… is internationally-recognised for its high conservation value and forms the study site for this project. The Kamiesberg is straddled by the Leliefontein communal area, which has been stocked for many years at twice the rate of the adjacent private rangelands. This presents an opportunity to …
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The proposed Gariep Transfrontier Conservation Area : conservation overlay evaluation of the South African section
The Gariep Transfrontier Conservation Area (TFCA) was identified by the Peace Parks Foundation (PPF) as one of seven potential TFCAs in southern Africa. Conservation of the Gariep TFCA would provide protection to the Nama-karoo biome, thereby improving the representativeness of South Africa's …
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Conservation of polychaete biodiversity within the Port Stephens-Great Lakes Marine Park
… area in which an MPA is proposed, the relative conservation value of different places within the area can be quantified by measures such as species richness, rarity, assemblage diversity, total abundance of organisms, and presence of critical habitats. However, the lack of information on the …
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Restoration of the endangered Cumberland elktoe (Alasmidonta atropurpurea) and Cumberland bean (Villosa trabalis) (Bivalvia: Unionidae) in the Big South Fork National River and Recreation Area, Tennessee and Kentucky
… information system (GIS) and several measures of conservation value. Mussel restoration sites were assessed for potential threats from adjacent land uses that may negatively affect mussels, including coal mines, oil and gas wells, transportation corridors, agriculture and urban development. Sites …
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Cocoa yield, nutrients and shade trees in traditional cocoa agroforests in a climate change context: a case study in Bahia, Brazil
… by the farmers. These cabrucas have high conservation value but very low cocoa yield. In my thesis I investigate the factors limiting cocoa yield and how to increase yield in cabrucas. I explore the role of shade trees and the nutrient dynamics in litterfall. Finally, I explore the risk …
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Strategic Conservation Planning for High Knob, Virginia: A GIS Decision Support Approach
Conservation strategies frequently require prioritization of targets due to limited budgets and personnel. Prioritization involves choosing those areas that return the most conservation value for the time and money invested. Hence, the process of prioritization involves evaluating multiple …
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Classification and dynamics of the forest vegetation of Hluhluwe Nature Reserve, Kwa Zulu-Natal
… composition, grain, classification, dynamics and conservation value. Field sampling took the form of recording DBH for all species in twenty-one 0.04 ha circular plots, walking 5-metre wide transects in mature and marginal forest to record size-classes and analysis of twenty gaps. Data were …
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Conservation priorities and management recommendations for the Erongo Region Coastal Zone, Namibia
… natural habitats. Apart from their ecological value, these habitats also attract large numbers of tourists. Tourism is one of the main sources of income in the coastal area of the Erongo Region, therefore it is in the interest of Namibians that these habitats are utilised in a sustainable way. …
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Conservation on the edge : landscape scale conservation at Colorado's urban-rural interface
Landscape scale conservation is an emerging framework that refers to the ability to conceive, plan, finance and manage projects with significant natural conservation value while incorporating the cultural and economic activities of people situated in those landscapes. This framework is examined …
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Floristics, Conservation, and Restoration of Virginia's Piedmont Grasslands
… conversion to agricultural lands. To inform the conservation and restoration of Southeastern grasslands in Virginia's Pied- mont, I address four research objectives: 1) Characterize the floristic composition of native grasslands; 2) Assess the impacts of agricultural land use and restoration on …
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Population structure of lake trout (Salvelinus namaycush) In Atlin Lake, British Columbia and contributions to local fisheries: a microsatellite DNA-based assessment
… habitats is important when determining the conservation value of that taxon and for successful habitat management programs to be developed. Atlin Lake is a large lake in northern British Columbia and is one of the largest lakes that contain relatively unperturbed populations of lake trout …
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