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 17 of 17 for “"non-native plants"”.
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Exotic Bird Invasion Into Forests of Hawaii: Demography, Competition, and Seed Dispersal
… did have a strong and conspicuous impact on native and non-native plants. In an ecosystem where most native frugivores are extinct, introduced birds dispersed all common native plants in these forest sites but non-native plants were infrequently eaten and dispersed. Furthermore, introduced …
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The effects of fire and drought on plant-soil feedbacks of a nonnative invasive grass in southern Illinois
Non-native plants can disrupt ecosystem functioning and internally reinforce their dominance over native species by altering soil nutrient availability (i.e. resource-mediated feedbacks) and by modifying fire regimes (i.e. disturbance-mediated feedbacks). While fire and other disturbances are shown …
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The Vascular Flora of Greater San Quintín, Baja California, Mexico
<p>The plants of San Quintín (Baja California, Mexico) were documented through intensive fieldwork and the collection of herbarium specimens to create a checklist of species. This region is home to a diverse flora with high levels of local endemism and many rare plants. The flora documented in this …
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Integrating Geospatial Technology and Ecological Research in the Analysis of Sustainable Recreation Infrastructure
… The second article analyzes the extent of non-native plants on campsites over thirty-two years. Paired t-tests were used to look at cover and abundance on campsites and control areas between 1982 and 2014. This paper explores ecological benefits and degradation incurred by non-native plants …
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Understanding Invasive Species Impacts on Reclaimed Surface-Mined Lands
… mining, with most not being restored back to native forests or other productive land uses. These areas are left fragmented, heavily modified, unmanaged, and densely invaded by non-native plants. Autumn olive (Elaeagnus umbellata) is one of the most prevalent invasive species on reclaimed mines …
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Plant Community Development of Isle Royale's Moose-Spruce Savannas
… variables that influence vegetation development. Non-parametric multiplicative regression was used to predict how these variables influenced individual plants and structure within the communities. Plant communities had a notable shift from forest herbs to ruderal species, especially non-native …
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Applying numerical sediment transport models to examine river restoration sustainablilty at the Rio Grande Nature Center, New Mexico
… localized, small scale features that promote native vegetation establishment and improve habitat for endangered species without removing flood protection measures. One such feature is the Rio Grande Nature Center (RGNC) Habitat Restoration project. The project consists of removing non-native …
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Attraction and risk in urban bird habitats
Urban expansion is an increasing threat to native bird populations. Consequently, maintaining and developing safe urban habitat space is necessary for conservation. Birds living in, or migrating through, urban areas utilize a variety of managed green-spaces such as parks, gardens, college campuses, …
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Exploring the mechanisms and impacts of plant invasions in grasslands
Non-native plant species are being introduced to ecosystems worldwide at an unprecedented rate. Many of these non-native species become invasive by spreading across their introduced ranges and impacting native biota, ecosystems and human societies. However, the impacts of the majority of non-native …
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Targeted short-term nutrient reduction to manage Ventenata dubia an invasive winter annual grass: soil and plant responses
… common management methods also reduce native plant diversity and harm the soil microbiome. These effects require additional measures to be taken, like reseeding, and plant diversity is still usually well below remnant targets. Early season short-term nutrient reduction to manage IWAGs …
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Ornamental Plants Impact Insect Pollinator Abundance and Diversity in Gardens
… and diversity of pollinators that will visit the plants. To fill this gap, we created a pollinator garden containing 25 pollinator plantings, some on previous recommendation lists, some not, and that were either native or non-native and perennial or annual. We surveyed the number and taxonomy of …
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CAN SHEEP CONTROL LEAFY SPURGE WITHOUT COMPROMISING EFFORTS TO RESTORE NATIVE PLANTS?
… strategy, little is known about their impacts on native plants. The efficacy of sheep grazing for restoration depends both on its potential for controlling undesirable plants and its ability to promote native species that provide key ecosystem goods and services. I investigated the effects of …
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CAN SHEEP CONTROL LEAFY SPURGE WITHOUT COMPROMISING EFFORTS TO RESTORE NATIVE PLANTS?
… strategy, little is known about their impacts on native plants. The efficacy of sheep grazing for restoration depends both on its potential for controlling undesirable plants and its ability to promote native species that provide key ecosystem goods and services. I investigated the effects of …
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Ecosystem Consequences of Post-Fire Invasive Species in the Great Basin Desert
… important consequences for ecosystem function. Non-native plants, such as cheatgrass (Bromus tectorum L.), have aggressively invaded the Western United States. Promoted by overgrazing and fire, this invasion is rapidly converting large expanses of native sagebrush to post-fire invasive …
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ASSESSING THE PERFORMANCE OF SAMPLING DESIGNS FOR MEASURING ABUNDANCE OF UNDERSTORY PLANTS AFTER FOREST RESTORATION
… estimation of the responses of understory plants to natural and anthropogenic disturbance is essential for understanding efficacy and non-target effects of management and restoration activities. However, ability to assess changes in abundance of understory plants that result from …
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ASSESSING THE PERFORMANCE OF SAMPLING DESIGNS FOR MEASURING ABUNDANCE OF UNDERSTORY PLANTS AFTER FOREST RESTORATION
… estimation of the responses of understory plants to natural and anthropogenic disturbance is essential for understanding efficacy and non-target effects of management and restoration activities. However, ability to assess changes in abundance of understory plants that result from …
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Diversity and species overlap of Botryosphaeriaceae on some trees of Anacardiaceae in disturbed and undisturbed ecosystems in South Africa
The Botryosphaeriaceae are common and diverse on native and non-native plants. It has been established that the ability of Botryosphaeriaceae fungi to exist in healthy plant tissues as endophytes facilitates their global movement during the international trade of plants and plant products. It is …