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 “"bird species richness"”.
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The influence of woodlot size and location in suburban and rural matrices on bird species richness and individual abundance
… of woodlot area and matrix composition on bird species richness and individual abundance. Bird surveys were conducted in winter 2004 and 2005 and spring 2005. Woodlot area and landscape composition were analyzed using GIS software. In winter, resident species richness and abundance …
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Validating A Kentucky Wetland Rapid Assessment Method For Forested Riverine Wetlands Using Vegetation, Bird Surveys, And Landscape Analysis
… a vegetation index of biotic integrity (VIBI), bird surveys, and landscape development index (LDI). Specific objectives of this study were to: 1) determine the correlation between bird species richness, VIBI, and LDI with the KY-WRAM in forested riverine wetlands; and 2) determine which …
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Urban green infrastructures: an assessment of urban bird diversity, abundance and behaviour associated with green walls and street trees in Manchester and Salford, UK.
… observational surveying, data were collected on bird species richness and abundance at sixteen sites across the cities of Manchester and Salford, UK, and, along with bird behaviours, at eight green walls and adjacent street trees. There was a strong negative relationship between bird species …
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Avian habitat relationships in the Mojave Desert
The relationship between bird community composition and plant community composition and structure was studied over three years (1994-1996) in a variety of Mojave Desert habitat types. This study addressed two fundamental questions: what plant community characteristics are statistically related to …
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Examining the spatial influences of natural capital in the Australian agricultural landscape
… biodiversity outcomes (vascular plant and bird species richness) at the postcode level. This study put together a new dataset on certified organic farming presence and locations in South Australia, using databases from organic certifiers. The spatial association between biodiversity …
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An ecological study of the breeding birds of grassland habitats within Illinois
The breeding bird communities of 24 grassland fragments in Illinois were studied between 1987-1990 to examine the influence of area, vegetation structure, species interactions, and habitat management on community structure. Fragment size was found to strongly influence breeding bird species …
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Effects of Wind Turbines On Nongame Birds in Conservation Reserve Program Grasslands in Southwestern Minnesota
… energy generation has been the potential for bird collisions with wind turbines. The effects of wind turbines on nongame bird composition and density in Conservation Reserve Program (CRP) grasslands was evaluated in summer 1995 along Buffalo Ridge in southwestern Minnesota. Bird density in CRP …
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Habitat influences on avian diversity and reproductive success in western aspen forests
… encroachment on an aspen stand may increase bird diversity by increasing vegetation complexity. The presence of conifers may also affect the reproductive success of birds through changes in vegetation density and structural complexity around nest sites or the addition of conifer-dependent …
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Habitat influences on avian diversity and reproductive success in western aspen forests
… encroachment on an aspen stand may increase bird diversity by increasing vegetation complexity. The presence of conifers may also affect the reproductive success of birds through changes in vegetation density and structural complexity around nest sites or the addition of conifer-dependent …
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The relative importance of natural and human-induced environmental conditions for species richness distribution patterns in South Africa
… the spatial distribution of South African avian species richness from the viewpoint that humans are a substantial modifying force on earth, and have also modified the historical spatial distribution of species richness. The main aim of the thesis is to investigate the way in which humans have …
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Towards adaptive management of high-altitude grasslands: Ingula as a case study
… to the national grid. In this thesis, I use bird data and vegetation data to compare, contrast and suggest management tools to manage this area. I present data that I collected at Ingula Pumped Storage Scheme spanning five years from the beginning of the construction of the scheme to near its …
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The impacts of habitat fragmentation of Tsitsikamma fynbos, South Africa, on avian nectarivore presence, abundance, and pollination
… may result in reduced seed-set for the plant species that rely on them. This study considers how selected erica and protea plants and the sunbirds and sugarbird that pollinate them are affected by fynbos habitat fragmentation. The study was conducted in an area of fragmented Tsitsikamma …
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Grassland and Woodland Bird Occurrence and Habitat Selection in the Prairie-Forest Transition Zone of Minnesota
<p>Numerous species of woodland and grassland nesting birds have experienced population declines in the midwestern United States. Habitat loss and habitat fragmentation are suspected to be two of the underlying causes for the population declines of woodland and grassland birds. The Minnesota Valley …
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Vascular Plant and Vertebrate Species Richness in National Parks of the Eastern United States
Given the estimates that species diversity is diminishing at 50-100 times the normal rate, it is critical that we be able to evaluate changes in species richness in order to make informed decisions for conserving species diversity. To contribute to the ongoing analysis of species richness …
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Landscape Ecology of Birds on Mount Leconte, Great Smoky Mountains National Park
<p>Landbirds form a significant component of wildlife resources in the Great Smoky Mountains National Park. The present study explored how forest structure and composition of deciduous-coniferous ecotones influenced diversity, richness, and relative abundance of bird species and how bird species …
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Modelling British Columbia’s ecosystems and avian richness using landscape-scale indirect indicators of biodiversity
… threaten our ability to maintain ecosystem and species diversity levels. Geospatial reviews of biodiversity monitoring have identified ecological indicators for the indirect mapping of species richness and ecosystem components modelling the processes controlling species distribution gradients. …
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Effects of Plant Invasions on Birds Breeding In Desert Grasslands
… quality of habitat for many grassland-associated species, including grassland birds, which have declined more rapidly across North America than any other group of birds. Along gradients in cover of woody plants and nonnative grasses in semidesert grasslands of southeastern Arizona, we evaluated …
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Urban wildlife species detection, species richness, and community shifts along a gradient of urbanization in an agriculturally embedded landscape using passive and active methods
… urbanization in prairie cities. I analyzed how species richness of birds and mammals responded to a gradient of urbanization, measured by impervious cover, in Regina, Saskatchewan, Canada. Regina is a prairie city with a large amount of green space of planted trees, a lake, and is surrounded …
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A Comparison of Land Use and Land Cover in Public Lands of the Northwestern Great Plains and High Plains Ecoregions and the Implications For Grassland Birds
… contribute to widespread declines of grassland birds in the United States. Many studies have evaluated habitat needs for the conservation of grassland birds, but the relative contribution of public lands in representing and maintaining avian biodiversity remains poorly understood. Having a …