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 11 of 11 for “"Prairie Ecosystems"”.
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Picturesque prairies : productive preservation on a petroleum planet
… snow, provides 'scenic' lands for tourists and prairie ecosystems for bison. The socio-political distinction between actors has produced abstract borders and delineations in the form of habitats and land-use policies. Materialized through fences, these policies have created autonomous operating …
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Phenotypic Plasticity of Native and Invasive Cool-Season Grasses in Response to Frequency of Moisture Availability
… are invasive species in tall- and mixed-grass prairie ecosystems. The objectives of this two-part study were to quantify the adaptive plasticity of biomass accumulation and tiller production in B. inermis and P. pratensis in comparison to their native neighbors (Elymus canadensis (Canada …
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Floral abundance and soil characteristics affect wild bee community structures and nesting dynamics in tallgrass prairies
Tallgrass prairies have been reduced to less than 5% of their former range, yet provide essential habitats for many native plants and animals such as pollinators. Land managers work to preserve the biodiversity within these tallgrass prairies by implementing management techniques such as burning, …
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Interactive effects of fire and grazing on soil and forage nitrogen dynamics in a tallgrass prairie
… regulators of nutrient cycling in 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 …
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Bridging prairie restoration and regenerative agriculture with compost tea / the rocket incident: post-fire soil microbe recovery on the Eastern Washington University restoration site
<p>Inland Pacific Northwest prairie is an endangered ecosystem that has been reduced by conversion to agriculture. There is growing interest in the role of soil microorganisms in prairie ecosystems, which may be crucial for restoration of the plant community through interspecies interactions within …
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Multitrophic Interactions in a Prairie Insect Community: Ecology, Behavior, and Conservation
"Tallgrass prairies used to dominate the midwestern United States, but have been reduced to <0.01% of their original pre-settlement area. The plant communities of this ecosystem are relatively well known and appreciated, but little is known of the biology of most insects that are endemic to prairie …
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Prairie Restoration and Species Diversity: A Comparison of Propagation Success Between Seeded and Planted Forbs
<p>Prairie ecosystems used to dominate Illinois’ landscapes, providing some of the most organically rich soils in the world, supplying homes to hundreds of native species, and conserving soil and water. The deep rooted forbs prevent water runoff and soil erosion. Economically the prairies have …
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Influence of habitat complexity on diversity and community structure of arboreal spiders in grassland-shrub systems
… assemblage. However, most spider studies in prairie ecosystems have focused on ground dwelling taxa or those associated with agroecosystems. Only limited data exist for shrub-dwelling species and few studies have compared arboreal spider occupancy across different grassland shrub species. I …
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THE ROLE OF MICROBIAL ENDOSYMBIONTS IN SORGHUM HALEPENSE INVASIONS: EVIDENCE OF A NEW INVASION STRATEGY, MICROBIALLY ENHANCED COMPETITIVE ABILITY (MECA)
… significantly inhibited the growth of a native prairie grass, <i>Schizachyrium scoaparium</i>, which is frequently displaced by the invader in tallgrass prairie ecosystems. Restricting bacterial growth completely removed these competitive effects. Plants with bacterial endosymbionts also had …
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THE ROLE OF MICROBIAL ENDOSYMBIONTS IN SORGHUM HALEPENSE INVASIONS: EVIDENCE OF A NEW INVASION STRATEGY, MICROBIALLY ENHANCED COMPETITIVE ABILITY (MECA)
… significantly inhibited the growth of a native prairie grass, <i>Schizachyrium scoaparium</i>, which is frequently displaced by the invader in tallgrass prairie ecosystems. Restricting bacterial growth completely removed these competitive effects. Plants with bacterial endosymbionts also had …
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A quantitative study of the vegetation of dry and dry-mesic sand prairies in Central and Northwestern Illinois
Dry and dry-mesic sand prairies in Illinois are mainly restricted to the glacial outwash and valley train deposits bordering major rivers in the northern half of the state, particularly the Illinois, Mississippi, and Rock Rivers. When compared to typical Illinois blacksoil prairies, these sand …