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Effects Of Vegetation Heterogeneity On Multiphasic Treatment Outcomes In Sagebrush Steppe, Rebecca Donaldson
Effects Of Vegetation Heterogeneity On Multiphasic Treatment Outcomes In Sagebrush Steppe, Rebecca Donaldson
Boise State University Theses and Dissertations
Exotic annual grass invasion into western North America has led to significant loss of native perennials, altering the structure and function of sagebrush-steppe ecosystems. Monitoring and assessment of necessary restoration treatments have provided mixed evidence of success. We hypothesized that treatment outcomes would be influenced by restoration strategy (e.g., the timing of herbicide or drill seeding) and by within-treatment vegetation heterogeneity. We evaluated exotic annual grass and exotic perennial forb response to three replicate treatments of the pre-emergent herbicides indaziflam and imazapic, and a combination treatment of both herbicides, followed with the broadleaf herbicide, aminopyralid, at a highly invaded site …
Consequences Of Pre-Inoculation With Native Arbuscular Mycorrhizae On Root Colonization And Survival Of Wyoming Big Sagebrush (Artemisia Tridentata Ssp. Wyomingensis) Seedlings After Transplanting, Bill Eugene Davidson
Consequences Of Pre-Inoculation With Native Arbuscular Mycorrhizae On Root Colonization And Survival Of Wyoming Big Sagebrush (Artemisia Tridentata Ssp. Wyomingensis) Seedlings After Transplanting, Bill Eugene Davidson
Boise State University Theses and Dissertations
Inoculation of seedlings with arbuscular mycorrhizal fungi (AMF) is a common practice aimed at improving seedling establishment. The success of this practice largely depends on the ability of the inoculum to multiply and colonize the growing root system after transplanting. These events were investigated in Artemisia tridentata ssp. wyomingensis (Wyoming big sagebrush) seedlings inoculated with native AMF. Seedlings were first grown in a greenhouse in sterilized soil (non-inoculated seedlings) or soil containing a mixture of native mycorrhizae (inoculated seedlings). Three-month old seedlings were transplanted to 24 L pots containing soil from a sagebrush habitat (mesocosm experiments) or to a recently …