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 36 for “"Landscape Scales"”.
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Factors associated with Atlantic white -cedar seedling recruitment on microtopographic and landscape scales, Brown Mill Pond, Rye, New Hampshire
… were associated with seedling presence. On a landscape scale, five previously identified cedar communities were measured for differences in water table level and soil moisture in order to determine associations between stand dynamics and hydrology.</p><p>A field survey showed that cedar …
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Spatial factors affecting white grub presence and abundance in golf course turf
… wetland, urban, bare soil and water) on four landscape scales derived from 10 km x 10 km buffer zones surrounding each golf course. Pearson's correlation coefficients were calculated to reduce the number of variables to a few that were highly correlated with white grub densities. Mallow's C(p) …
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A Landscape Approach to Grassland Bird Conservation in the Prairie Pothole Region of the Northern Great Plains
… birds, measure local vegetation and quantify landscape features at 952 sites in western Minnesota and northwest Iowa. Findings indicate that cropland provides little habitat for grassland songbirds and that hayland does not compensate for loss of grasslands. Multiscale models show that …
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A Landscape Approach to Grassland Bird Conservation in the Prairie Pothole Region of the Northern Great Plains
… birds, measure local vegetation and quantify landscape features at 952 sites in western Minnesota and northwest Iowa. Findings indicate that cropland provides little habitat for grassland songbirds and that hayland does not compensate for loss of grasslands. Multiscale models show that …
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READY-MADE MODEL. Digital tools for reality-based virtual landscapes
… to develop sustainable workflows for virtual landscape reconstructions, integrating diverse data sources and tools to support landscape and urban design in mountainous regions. The concept of a ready-made model is introduced, assembling digital procedures to address specific contextual …
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Using Remote Sensing and Biogeographic Modeling to Understand the Oak Savannas of the Sheyenne National Grassland, North Dakota, USA
… rare habitats, where oak savanna is found at the landscape scale. In this research, I map the distribution patterns of oak savanna in the Sheyenne using a combination of remote sensing and geospatial datasets, including landscape topography, soils, and fire disturbance. Further, I interpret the …
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Impacts of Wetland Characteristics on Duck Use in the Prairie Pothole Region (PPR) 1987-2013
… was to assess the influence of local and landscape factors on duck pair densities. Local factors are attributes immediately adjacent to, or within, an individual wetland that affect wetland appearance or function. Landscape factors represent wetland functions within varying compositions of …
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The influence of linear landscape features on pollinator behaviour
Linear landscape features such as hedgerows are important wildlife habitats but their functional role in improving connectivity in fragmented habitats remains uncertain. This thesis studied the influence of both natural and artificial linear features on pollinator behaviour at medium and landscape …
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Using Airborne Laser Altimetry to Characterize Surface Fuels in Western Montana
… nor can they be practical for full coverage at landscape scales. Several studies have examined remote sensing techniques for estimating fuel loads. One of the most promising is Light Detection and Ranging (LiDAR), which thus far has been applied primarily to forest canopies. Metrics derived from …
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Using Airborne Laser Altimetry to Characterize Surface Fuels in Western Montana
… nor can they be practical for full coverage at landscape scales. Several studies have examined remote sensing techniques for estimating fuel loads. One of the most promising is Light Detection and Ranging (LiDAR), which thus far has been applied primarily to forest canopies. Metrics derived from …
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Development of resource-rich patches by soil-disturbing animals in arid environments
In arid landscapes limited resources are concentrated into fertile patches that allow greater productivity than would otherwise be expected. Fertile patches are created and maintained by processes that modify soil topography and interrupt the flow of resources across the landscape. These processes …
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Conservation by simulation: an individual-based spatially explicit model to simulate population dynamics in fragmented habitat
… with a spatially explicit representation of a landscape. To investigate the robustness of the technique, representatives of three major taxa were modelled: the nuthatch (Sitta europaea L.), the white-footed mouse (Peromyscus leucopus Rafinesque) and the black hairstreak (Satyrium pruni L.). For …
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Using Noninvasive Genetic Sampling to Assess and Monitor Grizzly Bear Population Status in the Northern Continental Divide Ecosystem
… of population fragmentation that aligned with landscape features being across U.S. Highway 2. I used these encounter data to parameterized a series of simulations to assess the ability of noninvasive genetic sampling, specifically surveys of naturally occurring bear rubs, to estimate population …
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SAGE-GROUSE AND ENERGY DEVELOPMENT: INTEGRATING SCIENCE WITH CONSERVATION PLANNING TO REDUCE IMPACTS
… knowledge of which habitats are selected at landscape scales, where those habitats are located, and how species ultimately respond to anthropogenic disturbance. I assessed sage-grouse (Centrocercus urophasianus) large scale habitat ecology and response to energy development in the winter and …
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Using Noninvasive Genetic Sampling to Assess and Monitor Grizzly Bear Population Status in the Northern Continental Divide Ecosystem
… of population fragmentation that aligned with landscape features being across U.S. Highway 2. I used these encounter data to parameterized a series of simulations to assess the ability of noninvasive genetic sampling, specifically surveys of naturally occurring bear rubs, to estimate population …
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SAGE-GROUSE AND ENERGY DEVELOPMENT: INTEGRATING SCIENCE WITH CONSERVATION PLANNING TO REDUCE IMPACTS
… knowledge of which habitats are selected at landscape scales, where those habitats are located, and how species ultimately respond to anthropogenic disturbance. I assessed sage-grouse (Centrocercus urophasianus) large scale habitat ecology and response to energy development in the winter and …
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Influence of fire and habitat on the removal of invasive plant seeds by granivores in longleaf pine savannas
… habitat variation at the between-habitat and landscape scales. I quantified seed removal for four species of woody exotic plants (Elaeagnus umbellata, Albizia julibrissin, Triadica sebifera, and Melia azedarach), in longleaf pine savanna that varied spatially in time since fire, in the …
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