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 10 of 10 for “"vegetation diversity"”.
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Vegetation, diversity and rarity on the Cape Peninsula, South Africa
… is characterised by the combination of a diversity of habitats supporting a mosaic of vegetation types. This study attempts to describe and explain some of the determinants of species pattern and distribution. The first part of this thesis compares a simple vegetation classification, …
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Vegetation, diversity and rarity on the Cape Peninsula, South Africa
… is characterised by the combination of a diversity of habitats supporting a mosaic of vegetation types. This study attempts describe. and explain some of the determinants of species pattern and distribution. The first part of the thesis compares a simple vegetation classification, derived …
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Modeling of vegetation diversity and a national conservation planning: example of Russia
… Lösung der folgenden Probleme: 1) Wie lässt sich Vegetationsvielfalt in grober Auflösung auf Basis abiotischen Faktoren einschätzen? 2) Wie ist der Ansatz 'globaler Hotspots' für die Eingrenzung nationaler Biodiversitäts-Hotspots zu übernehmen? 3) Wie erfolgt die Auswahl von quantitativen …
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Assessment of vegetation diversity and rangeland condition in the Highveld communal grazing lands of Swaziland
… challenge to livestock farmers. Assessment of vegetation diversity and current rangeland condition was carried out in four communal rangelands, namely Siphocosini, Hawane, Motshane and Nkhaba. The rangeland condition assessment method employed in this study was the ecological condition index …
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Riparian resilience in the face of interacting disturbances: understanding complex interactions between wildfire, erosion, and beaver (Castor canadensis) in grazed dryland riparian systems of low order streams in North Central Washington State, USA
… factorial study comparing stream side riparian vegetation, stream channel morphology, and chemistry of stream reaches across burned vs. not burned sites with and without hydrologically significant beaver dams. My study was conducted June through November of 2018 in sub-basins of the Methow River …
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Addressing Insect Declines Via Biodiversity Monitoring, Ecological Restoration, and Population Genetics
… declines in insect abundance, biomass, and diversity suggest a pressing need to fill these knowledge gaps. Here, I present work that address these knowledge gaps by exploring ways to generate more insect records for biodiversity datasets, investigating how ecological restoration practices …
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BREEDING SEASON AVIAN COMMUNITY COMPOSITION AND PREY AVAILABILITY IN EUCALYPTUS AND SLASH PINE PLANTATIONS OF SOUTHWESTERN LOUISIANA
… Plain. However, few data exist to determine biodiversity impacts of plantation conversion from pines (<em>Pinus </em>spp.) to eucalyptus. Rather, most literature compares biodiversity between native forests to non-native plantations in various parts of the world. To make a preliminary assessment …
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Agroecosystem management strategies and trophic interactions among herbivores, pathogens and predators
… control strategies, the restoration of vegetation diversity in agroecosystems and the adoption of management strategies aiming to reduce impacts on natural enemy populations are practices that can be employed in different types of farming systems. Much of the conservative biological …
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Seventy years of changes in riverine woodland cover: Responses to elephants and human legacy effects in Gonarezhou National Park, Zimbabwe
As global biodiversity decreases, the importance of protected areas for protecting biodiversity and ecosystem complexity, is rising. Increasing development and land use change means that protected areas must restrict species to their boundaries to avoid human-wildlife conflict. Populations of …
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Soil Genesis and Vegetation Response to Amendments and Microtopography in Two Virginia Coastal Plain Created Wetlands
… incorrect hydrology, and failure of targeted vegetation establishment. Organic matter (OM) amendments help created wetlands attain these functions quicker, but, their long-term effects are seldom reported. This research's purpose was to measure the long-term effects of treatments at a sandy …