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 “"seed addition"”.
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Enhancement of diversity via disturbance and seed addition in two sand prairies dominated by different grasses
… release, but non-dominant species may require additional types of disturbance that create regeneration microsites, such as reduced litter and increased bare soil. In addition, community structure may be limited by seed availability, or a combination of microsite and seed limitation. Studies of …
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A holistic approach to Mima mound prairie restoration
… by dispersing fast growing native annual seed (instead of native perennial), forcing competition with invasive annuals. It is thought that native perennials should be able to more easily succeed following the native annuals that they evolved with rather than invasive annuals. Both …
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The role of small mammals in the population dynamics of two native grassland forbs: Lupinus sericeus and Lithospermum ruderale
Although post-dispersal seed predators are common and often reduce seed density, their influence on plant abundance remains unclear. We examined the impact of seed predation by small mammals, primarily deer mice (<i>Peromyscus maniculatus</i>), on seedling recruitment and plant establishment of two …
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The role of small mammals in the population dynamics of two native grassland forbs: Lupinus sericeus and Lithospermum ruderale
Although post-dispersal seed predators are common and often reduce seed density, their influence on plant abundance remains unclear. We examined the impact of seed predation by small mammals, primarily deer mice (<i>Peromyscus maniculatus</i>), on seedling recruitment and plant establishment of two …
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Plant community restoration on mima mounds at Turnbull National Wildlife Refuge, WA
… of lmazapic, sucrose soil amendment and native seed addition (Pseudoroegnia spicata and Festuca idahoensis), for exotic plant reduction on two geologic substrates (basalt and alluvium), 2) test effectiveness of a biocontrol insect (Mecinus janthiniformis) to reduce Linaria dalmatica, and 3) test …
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Role of seed mixes, biochar soil amendment, and the soil seed bank in improving Palouse Prairie restoration
… the most effective restoration approach. Annual seeds and soil organic matter are important for succession and soil moisture, but their roles are unknown for Palouse prairie restoration. Additionally, the soil seedbank of the Palouse ecoregion is widely unknown but could provide insight into …
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Drivers of plant and arthropod diversity and community structure in a grassland ecosystem
… of the SPH and NLH in limiting diversity, in addition to testing how the importance of these factors may shift from seed/dispersal constraints to local competition/productivity over gradients of 1) productivity and 2) time. Species availability and soil nutrient (N and P) availability were …
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Conversion of Exotic Cool-Season Grasslands to Restored Native Plant Communities Utilizing Herbicide Treatments
… untreated control that received no herbicide or seed addition were applied at each location in fall 2005-spring 2006 and fall 2006-spring 2007. Three fall herbicide treatments and two spring herbicide treatments were added for fall 2006-spring 2007. Herbicides were applied over clipped vegetation …
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Processes determining plant species diversity in restored tallgrass prairie
… of soil characteristics, management actions, seed mix design, and site characteristics for predicting prairie restoration success. We found that across many restorations, invasion by exotic plants was the best predictor of outcomes, significantly reducing beta-, and site-level plant diversity. …
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Impacts of hemiparasitic plants on the vegetation and biogeochemical cycling in two contrasting semi-natural grassland types
… of both hemiparasites on species abundances and seedling recruitment; third, we studied the impact of hemiparasitic and non-parasitic litter on gross nitrogen (N) transformations in the soil; and forth, we traced N uptake from hemiparasitic litter by the vegetation. We compared nutrient returns …