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 22 for “"Vegetation survey"”.
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Vegetation survey of Namibia: conceptualisation and implementation of a nation-wide vegetation survey serving practical land management needs
The global human population is dependant on a variety of plant-based ecosystem services for its well-being, even for its very existence. The well-being, in fact, the very existence of man is dependant upon plant-based ecosystem services. Typical services derived from ecosystems encompass food …
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A vegetation survey of the Cape of Good Hope Nature Reserve
The survey was undertaken on a 30 square mile (78 square kilometer) area at the southern tip of the Cape Peninsula, in the Cape Province of South Africa. The applicability of association-analysis to the distinctive fynbos vegetation found in the Mediterranean type climate of this region, was …
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Vegetation Survey of the Yegua Knobbs Preserve, Bastrop and Lee Counties, Texas
… at the preserve for a growing season. Woody vegetation was sampled using the line intercept method, and herbaceous components were sampled using the quadrat method. Analysis of the qualitative and quantitative data led to the recognition of six plant communities at YKP, four dominated by …
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Applications of air photo interpretation techniques in the Langebaan area, S. Africa
… behind the use of remote sensing products for vegetation survey work is given. This includes the particular benefits of colour air photographs, the relationship between scale of survey and scale of mapping and remote sensing products, and more information about the 'semi-detailed' level of …
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The impacts of different methods of alien plant control on the recovery of Fynbos ecosystems
… and "spot-spraying". Both an ant study and vegetation survey was conducted to test the hypothesis that fynbos is resilient to all kinds of pertubation (including the most severe alien plant management treatments employed) and that natural recovery over time is adequate to restore fynbos …
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A preliminary study of the vegetation of Piketberg mountain, Cape Province
A vegetation survey of the Piketberg has been undertaken. with the aim of laying the basis for a more detailed survey. The mountain ranges from 300 m to 1500 m and lies near the north-western edge of the Cape Fynbos. The vegetation was classified using the phytosociological methods of the Zurich- …
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Calluna vulgaris regeneration on upland moorland post-wildfire.
… particularly in drought years, which destroy all vegetation, seed bank and surface peat. Post-fire management of liming, fertilising and seeding with grass species and Calluna vulgaris (ling heather), in addition to natural regeneration, often fails to fully re-vegetate the bare burnt peat, …
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Estimating source area of pollen and pollen productivity in the cultural landscapes of southern Sweden - developing a palynological tool for quantifying past plant cover
… aims of this thesis are (1) to explore pollen-vegetation relationships in the ancient, traditional cultural landscape of southern Sweden, (2) to test the potentials and limits of using mechanistic models of pollen dispersal and deposition to reconstruct past cultural landscapes from fossil …
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An observational study of ticks on the 30 Acre Lake Trail at Turnbull National Wildlife Refuge
… range depends on the life stage of the tick, vegetation, and host accessibility. Mammal densities directly affect the number of questing ticks observed in the environment. The 30 Acre Lake Trail site was selected for this study due to the high density of Dermacentor species ticks observed in …
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Rangeland condition in the Tembe Traditional Area, Maputaland, KwaZulu-Natal, South Africa
… these objectives a cattle as well as a vegetation survey were conducted. The cattle surveys were conducted among the local communities (mentioned above) to identify and to evaluate the role played by cattle in the everyday lives of the communual people and to identify the types of …
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Palaeoecology and vegetation dynamics in the Cederberg wilderness area
… used to link changes with land use history. A vegetation survey of the site focussed on the grass component of the vegetation. The largest impacts on vegetation during the last 2300 years are due to grazing and agriculture during the 1800s to 1940. Fire-sensitive taxa have not declined, apart …
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Plant community restoration on mima mounds at Turnbull National Wildlife Refuge, WA
… techniques on those communities. I conducted a vegetation survey to characterize community composition and developed three experiments to: 1) test effectiveness of lmazapic, sucrose soil amendment and native seed addition (Pseudoroegnia spicata and Festuca idahoensis), for exotic plant reduction …
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Using Remote Sensing Data to Predict Habitat Occupancy of Pine Savanna Bird Species
… it more efficient than traditional, ground-based vegetation surveying. Thus, the objectives of my research were to 1) evaluate the use of remote sensing technology to predict habitat occupancy for pine savanna species, and 2) use satellite imagery-based models to inform multispecies management in …
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The effects of rehabilitation management on the vegetation of Fenn’s, Whixall and Bettisfield Mosses National Nature Reserve – a cut-over lowland raised mire
The relationship between vegetation change and rehabilitation management is investigated at a severely degraded cut-over lowland raised mire on the Wales/England border, managed by Natural England and The Countryside Council for Wales. Positive responses are confirmed 11 years after rehabilitation …
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Landscape scale measurement and monitoring of biodiversity in the Australian rangelands
… traditional field-based methods such as quadrat surveys have collected flora and fauna species data throughout the rangelands, but at fine scale; satellite remote sensing collects biologically relevant, spatially comprehensive data. The goal of this thesis was to provide the spatially …
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Effects of Hurricane Disturbance on the Stopover Ecology of Intercontinental Landbird Migrants in Coastal Louisiana
… mist net capture data, avian transect data, and vegetation survey data collected pre- and post-hurricane were examined for changes in response to storm damage to stopover habitat. Capture data were also used to assess whether stopover duration (SD) and fuel deposition rate (FDR) differed pre- and …
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The Late Quaternary palaeoecological history of the Great Wold Valley
… has left something of a vacuum in the known vegetational history of the British Isles. Conflicting ideas of the past landscape of the chalklands have been presented by archaeologists (e.g. Clark, 1936) and botanists (e.g. Tansley, 1939; Pigott and Walters, 1954). The Tansleyan view, i.e. that …
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Understanding drivers of long-term change in semi-natural habitats.
… What are the temporal patterns and drivers of vegetation change in calcareous grasslands? Chapters 2 and 3 address the first research question by exploring the dynamics of habitat change over time for a rural county in southern England. Historical surveys and contemporary spatial datasets were …
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Establishment of woody savannah species on various mined substrates: Toward rehabilitating self sustaining plant communities at Navachab Gold mine
… ecological understanding of natural indigenous vegetation communities. This project investigated the potential use of mined substrates to establish indigenous savannah woody species. The main objective of this project was to investigate the establishment of indigenous vegetation on mined …
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The modeled effects of fire on carbon balance and vegetation abundance in Alaskan tundra
… carbon could depend upon the effects of fire on vegetation, specifically concerning the speed at which vegetation reestablishes, the stimulation of growth after fire, and the changes that occur in species composition during succession. While rapid regeneration of graminoid vegetation favors the …
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