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 10 of 10 for “"plant-soil feedbacks"”.
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Plant-Soil Feedbacks In Heavy Metal Soils
… is critical for human and environmental health. Plant-soil feedbacks (PSFs), in which plants affect other plants indirectly by modifying the soil they grow in, have been shown to affect many processes critical to successful restoration, but we know little about their generality across ecosystems …
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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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Interactions among tree species and pathogen-suppressive bacteria in tropical forest soils
In tropical forests, soil-borne plant pathogens are thought to regulate diversity by driving negative plant-soil feedbacks and promoting density-dependent mortality of seedlings close to parent trees. Pathogens interact with a myriad of other organisms in soil that have the potential to moderate …
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Invasive lespedeza cuneata and its relationship to soil microbes and plant-soil feedback
… has lead to increased frequencies of exotic plant invasions, which can reduce biodiversity and lead to extinction of native species. Physical traits that increase competitive ability and reproductive output encourage the invasiveness of exotic plants. Interactions with the soil microbial …
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Interactive effects of fire and grazing on soil and forage nitrogen dynamics in a tallgrass prairie
… ecosystems, yet their combined effects on soil nitrogen (N) dynamics and links to forage quality across heterogeneous landscapes remain incompletely resolved. This thesis examined how fire frequency, grazing, and landscape position interact to regulate N cycling, N retention, and plant–soil …
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Using patchy plant invasions to understand how diffuse interactions modify facilitation and competition
<p>Indirect interactions among plants promote conditionality in competitive outcomes that affect plant community structure and function. I utilized spatially patchy distributions of two invasive exotic plants, <i>Centaurea stoebe</i> and <i>Bromus tectorum</i>, to explore conditionality in plant …
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Using patchy plant invasions to understand how diffuse interactions modify facilitation and competition
<p>Indirect interactions among plants promote conditionality in competitive outcomes that affect plant community structure and function. I utilized spatially patchy distributions of two invasive exotic plants, <i>Centaurea stoebe</i> and <i>Bromus tectorum</i>, to explore conditionality in plant …
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Biogeochemical effects of an invasive grass across a land-use gradient: linking alterations of nitrogen cycling to depleted soil carbon pools
… invasion ecology is that the effects of invasive plant species depend on spatial context. Therefore, to predict how the functioning of invaded systems will change across spatially heterogeneous landscapes, there is a need to understand the mechanisms underlying the effects of invasive plants and …
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Cheatgrass (Bromus tectorum L.) interactions with arbuscular mycorrhizal fungi in the North American steppe: prevalence and diversity of associations, and divergence from native vegetation
To view the abstract, please see the full text of the document.