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 8 of 8 for “"diversity-stability"”.
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Stability and Dynamics of Resource Consumer Ecosystems
… Understanding the collective properties like diversity, stability, and diversity-stability relationships of a large complex ecosystem having real-world structures has been a significant challenge, yet is important for better ecosystem management. In this thesis, we investigate stability and …
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Plant Response to the Barstow to Las Vegas Motorcycle Race of November, 1974
… the 1974 motorocycle event. Measurements of diversity, stability, productivity, and community quality were calculated. The results ·indicated a general negative response of perennials to motorcycle disturbance, the vegetational cover reduced on an average of 34%. In the pit area, a positive …
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Evaluation of Genetic Diversity and Stability of Colocasia Cultivars Using ISSR
… (Nacogdoches, TX), cultivar assessment, genetic diversity, stability, and relationship were examined with banding patterns produced from Inter-simple sequence repeat (ISSR) markers. Comparing banding patterns of vegetatively propagated clones of each cultivar, genetic stability was examined. …
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Plant Response Parameters to General Patton's Armored Maneuvers in the Eastern Mojave Desert of California
… of these parameters. From these values diversity, stability, productivity, community quality indices, and Jaccard's coefficient of similarity were calculated.</p> <p>Results indicate that the maneuvers had a negative effect on the perennial vegetation, the degree of impact varying with …
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Emergent behaviors in complex microbial ecosystems
… Understanding the complex emergent phenomena of diversity, stability, and invasibility in these communities within a unified framework has been a significant challenge. My PhD thesis addresses this knowledge gap by conducting the first direct test of a theory proposing that simple community-level …
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Assembly and functioning of microbial communities along terrestrial resource gradients in boreal lake sediments
… measured as CO2 production, should increase with diversity, but the individual and interactive effects of other ecosystem properties on ecosystem functioning remain unresolved. Chapter 3 further questions the importance of microbial diversity for ecosystem functioning by asking whether more …
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Diversity, Invasibility, and Stability of Appalachian Forests across an Experimental Disturbance Gradient
… including (1) testing theories of biological diversity and invasions by nonnative species; and (2) providing empirical data that will help guide the sustainable use of forest resources. This work is part of the Southern Appalachian Silviculture and Biodiversity (SASAB) experiment that was …
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Vegetation Responses to Seven Silvicultural Treatments in the Southern Appalachians One-Year After Harvesting
The vegetation responses to seven silvicultural treatments one growing season after harvesting were examined on seven sites in the southern Appalachian mountains of Virginia and West Virginia. Treatments included: 1) control, 2) understory control by herbicide, 3) group selection, 4) high-leave …