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.
Results
Showing 1 to 10 of 10 for “"Endangered ecosystems"”.
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Demographic and genetic variability in Cape Dwarf Chameleons, Bradypodion pumilum, withink a fragmented, urban habitat
… of isolated groups inhabiting critically endangered ecosystems.
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Practices combining fire and grazing in the Central U.S. reduce woody encroachment and accommodate grassland and shrubland birds
… grasslands and shrublands are critically endangered ecosystems receiving almost no protection, as nearly 50% of their global area has been lost and less than 5% has been set aside in reserves. To further complicate matters, in many instances these are alternate states of the same system, …
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Evolutionary dynamics of speciation and extinction
… to extinction stress could be key to saving endangered ecosystems. With a neutral, agent-based model that incorporates the main principles of Darwinian evolution, such as heritability, variability, and competition, the dynamics of speciation and extinction is investigated. The simulated …
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Restoring Abandoned Agricultural Lands in Puget Lowland Prairies: A New Approach
Puget Lowland Prairies are one of the most endangered ecosystems in the United States. Restoration has been occurring for more than thirty years and has focused on extant sites with some native species present. Generally, actions first began with invasive species control, followed by reintroduction …
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Establishing the Citizen Science Stream Index (CSSI) to monitor water quality in freshwaters
Streams and rivers are amongst the most endangered ecosystems in the world. Water quality is an important measure for maintaining ecosystem function. Despite several decades of the EU Nitrates and Water Framework Directives, inputs of nutrient-rich organic matter of both agricultural and municipal …
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Moving the needle on prairie conservation: a Palouse Prairie restoration/reconstruction needs assessment and the effect of intra-annual soil moisture changes on Balsamroot seedling establishment
… Washington and Western Idaho is one of the most endangered ecosystems in the United States. After 140 years of intensive agriculture, less than 1% of prairie habitat remains, making Palouse prairie conservation and restoration a critical need. This study sought to: 1) conduct a thorough needs …
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Remnant assessment and soil inoculation to inform large-scale prairie restoration at Eastern Washington University
… hills of deep loess soil, is one of the most endangered ecosystems in the world, with more than 99% converted to tilled farmland. To mitigate this loss, Eastern Washington University has begun prairie restoration on a tilled wheat field adjacent to campus, in the northern extent of the Palouse …
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CARBON AND NITROGEN CYCLING IN GIANT CANE (ARUNDINARIA GIGANTEA (WALT.) MUHL.) RIPARIAN ECOSYSTEMS
… has caused giant canebrakes to become critically endangered ecosystems. Increasing evidence suggests the loss of canebrakes has directly impacted riparian ecosystems, resulting in increased soil erosion, poorer water quality, and reduced flood control. Cane's ecological importance has led to an …
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An Assessment of the Use of Seeding, Mowing, and Burning in the Restoration of an Oldfield to Tallgrass Prairie in Lewisville, Texas
An examination of the effectiveness of seeding, burning, and mowing in the reestablishment of tallgrass prairie species on overgrazed and abandoned pastureland. The study site is a 20 acre tract on U.S. Corps of Engineers land below Lake Lewisville in Denton County, Texas. The site was partitioned …
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As We Move Ahead Together: Foregrounding Reconciliating and Renewed First Nation/ Non-Aboriginal Relations in Environmental Management and Research
The research project upon which this dissertation is based focused on enhancing understandings of the nature of current First Nations/non-Aboriginal relations in environmental management. The project was undertaken as a collaborative initiative by the author, a non-Aboriginal doctoral researcher, …