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 14 of 14 for “"Edge Habitat"”.
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Macroinvertebrate composition of the upper Georges River with reference to urban, industrial and agricultural impacts
… samples were collected from two habitats, pool and edge at each of nine sites, for six surveys. The macroinvertebrates were sampled using standard kick net sampling. Samples were preserved, picked and identified to species level where possible. Physical measurements and water …
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Diversity and Abundance of Bees in Canadian Prairie Agroecosystems: Understanding the Role of Remnant and Restored Habitat in Supporting Native Bee Populations
Habitat loss due to agricultural intensification has negative implications for native bee communities throughout Western Canada. Wetland remnants are a common feature within the Prairie Pothole Region of Saskatchewan and are threatened due to continued conversion to agricultural land. Approximately …
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How vertebrate communities affect quality and yield of macadamia farms in Levubu, South Africa
… to uncover their relative value and importance. Habitat loss and fragmentation are major threats to biodiversity and ecosystem services. Agricultural intensification can cause habitat loss and can negatively affect natural ecosystems and their services. However, the removal of natural vegetation …
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The investigation of edge effects within ragmented forest islands in Short Hills Provincial Park
… It has also been observed that elevated areas of edge habitat occur within fragmented landscapes. Spatial and temporal edge effects were investigated in four areas designated as Nature Reserve Zones within Short Hills Provincial Park, near St. Catharines, Ontario. Random sampling along exposed …
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Genetic variability, demography, and habitat selection in a reintroduced elk (Cervus elaphus) population
… variability, demographic vital rates, and habitat use for a reintroduced elk (Cervus elaphus) population at Fort Riley, Kansas based on data collected from 2003 – 2007. Levels of allelic richness, observed heterozygosity, and expected heterozygosity for the Fort Riley population were …
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The ecology of two estuarine-dependent tonguefishes, the blackcheek tonguefish (Symphurus plagiusa) and the offshore tonguefish (S. civitatium), in coastal Louisiana
… that utilize inshore estuarine habitat as nurseries during their early life histories. Current management plans designed to stabilize marsh elevations, such as freshwater diversions, may also influence the distribution and abundance of estuarine-dependent nekton. Given the …
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Winter Behavior and Ecology of Eastern Bluebirds (<i>Sialia sialis</i>): Home Ranges, Habitat Use, and Effect of Weather on Foraging Behavior
… the need to better understand winter-specific habitat requirements and behavioral responses to inclement weather. My objectives were to 1) describe the size and habitat composition of the home ranges of wintering bluebirds, and 2) examine the effects of weather (i.e., temperature, wind speed, …
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Distribution and abundance of nearshore aquatic habitat, Fraser River, British Columbia
Physical habitat for instream biota derives from a combination of stream system structural and hydraulic phenomena. Consequently, the quantity and quality of physical habitat is dynamic both over time and in space along the river, laterally, longitudinally and vertically. Its characterization …
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Effects of black flies on wild turkey reproductive success
… composition (e.g., forest cover, streams, edge habitat, roads), and nest-site vegetation structure can influence nest success. Biting insects such as black flies (Diptera: Simuliidae) are a common nuisance often present during the reproductive period of numerous avian species and have the …
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Analysis of the ecological principles underpinning forest landscape restoration: a case study of wood cricket (Nemobius sylvestris) on the Isle of Wight (UK).
… are increasingly focussing on the creation of habitat networks in order to increase woodland cover and connectivity. However, the basic assumptions underpinning such strategies are largely untested for species associated with woodland habitat. For many woodland invertebrate species, local scale …
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Environmental factors affecting the range expansion of Ixodes scapularis, the blacklegged tick, (Acari:Ixodidae) in Illinois
… (Tamias striatus) while providing abundant edge habitat for large mammal I. scapularis reproductive hosts, such as white-tailed deer (Odocoileus virginianus). Dominant tree species may also influence the presence and success of various animal hosts. Soil composition, elevation, and drainage …
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Thresholds for sustainable regeneration in urban restoration plantings in Hamilton City, New Zealand
… rain, however, will allow reinvasion through edge habitat and following any disturbance to canopy vegetation. Persistent soil seed banks from both urban and rural sites were dominated by exotic herbaceous species and native fern species, while few other native forest species were found to …
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Lyme Disease and Forest Fragmentation in the Peridomestic Environment
… depend on the existence of forest-herbaceous edge-habitats, as well as warm summer temperatures, mild winter lows, and summer wetness. While many studies have investigated the effect of forest fragmentation on Lyme, none have made use of high-resolution land cover data to do so at the …
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Effects of fragmentation and invasion on ant communities
… event. Activities such as land-use change, habitat loss and fragmentation, the transport and establishment of invasive species, overhunting, pollution and climate change have threatened tens of thousands of species worldwide. Moreover, these factors do not act independently and synergies …