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 16 of 16 for “"Cheatgrass (Bromus tectorum)"”.
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A Mechanistic and Landscape Scale Approach Quantifying Habitat Suitability of Cheatgrass (Bromus tectorum) Engineered Habitats for Great Basin Reptiles
… invasion by a highly successful plant species, cheatgrass (Bromus tectorum). The result has been the alteration of landscape structure and ecosystem function. This novel habitat has been implicated in biodiversity losses for multiple wildlife taxa in the Great Basin. Yet, an understanding of the …
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Cheatgrass (Bromus tectorum L.) management and native plant community recovery on sites selectively treated with Imazapic in Rocky Mountain National Park
Cheatgrass, a winter annual grass introduced to North America from Eurasia, has invaded much of the Western United States over the last century. Recently, cheatgrass has become a threat to the montane and subalpine plant communities and ecosystems of Rocky Mountain National Park (RMNP). Cheatgrass …
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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.
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Invasive plant influence on the native grass community of the White Lake Basin, British Columbia
… plants can have significant ecological effects. Cheatgrass (Bromus tectorum) is of particular concern in North America, where its competitive nature can seriously degrade natural grasslands. This study, conducted in the White Lake Basin region of British Columbia, investigated the impact of …
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Ecological Investigations of Chukars in Western Utah
… were proven to be unfounded with no evidence of cheatgrass (Bromus tectorum) dispersal despite widespread utilization. Furthermore, guzzlers designed to benefit Chukar populations were heavily utilized by native species and only slightly (two species at three sites) by other exotics. These three …
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Effects of Cheatgrass Control on Wyoming Big Sagebrush in Southeastern Utah
… and A. Young] Welsh) have developed dense cheatgrass (Bromus tectorum L.) understories. These communities are currently characterized by predominately mature to decadent stands of sagebrush with few perennial grasses and forbs. Sagebrush seedlings and perennial grasses compete for limited …
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Epidemiology of Ustilago bullata Berk. on Bromus tectorum L. and Implication for Biological Control
… naturally occurring biological control agent for cheatgrass (Bromus tectorum L.). The effects of temperature and nutrients on pathogen teliospore germination behavior and the effects of temperature on host seed germination were examined. The effects of temperature on sporidial proliferation, host …
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Effects of pretreatment tree dominance and conifer removal treatments on plant succession in sagebrush communities
… resisting dominance by invasive species such as cheatgrass (Bromus tectorum L). By 6 years after treatment, tall grass and cheatgrass cover both increased on prescribed fire and cut treatments, especially at higher pretreatment TDI. However, ratios of cheatgrass to tall grass cover were much …
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Ecosystem Consequences of Post-Fire Invasive Species in the Great Basin Desert
… ecosystem function. Non-native plants, such as cheatgrass (Bromus tectorum L.), have aggressively invaded the Western United States. Promoted by overgrazing and fire, this invasion is rapidly converting large expanses of native sagebrush to post-fire invasive communities. The objective of this …
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Fire Effects on Soil and Water Quality in the Sierra Nevada Mountains and Great Basin Ecosystems: Emphasis on Nitrogen
… the growth and nitrogen uptake patterns of cheatgrass (Bromus tectorum) in three soil types from a Wyoming Big Sage-dominated system, an invaded cheatgrass area and a newly burned site. Cheatgrass seedlings grew larger (more leaves and were taller and heavier) in the newly burned soil. The …
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Cheatgrass die-off in the Great Basin: A comparison of remote sensing detection methods and identification of environments favorable to die-off
Invasion by cheatgrass (Bromus tectorum L.) has greatly damaged the rangeland ecosystems of the Western United States. While mechanical and chemical control of cheatgrass is possible, control is costly and often ineffective in the long-term. An improved understanding of cheatgrass die-off, or stand …
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Unraveling an uncertain future for the Great Basin: how climate, grass invasion, and wildfire interact to drive ecosystem function
… how soil aridity influences root exudation by cheatgrass (Bromus tectorum), an invasive annual grass, alters the cycling of carbon (C) and nitrogen (N) in the soil. We observed that cheatgrass was able to uniquely access N in dry soils, and that changes in soil condition that implicate …
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Response of Pinyon-juniper woodlands to fire, chaining, and hand thinning
… factorized explained 86.5% of the deviance in cheatgrass (Bromus tectorum) cover at the treated plots. The projects on soils derived from welded tuff had very little cheatgrass while soils derived from limestone or mixed limestone/volcanics were dominated by cheatgrass. Parent material should …
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Soil Moisture Measurements and Modeling at a Geomorphically Reclaimed Coal Mine in New Mexico
… (Elymus elymoides), and an invasive species cheatgrass (Bromus tectorum) was determined in terms of cumulative progress towards germination (PTG). Survivability of existing plant blue grama grass (Bouteloua gracilis) and cheatgrass was also predicted by comparing soil water potential at …
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The Effect of Prescribed Burning on Soil Microbial Communities, Nutrients, and Carbon Dioxide Fluxes Under and Between Sagebrush Canopies in the Semi-Arid Rangelands of Northern Nevada
Wildfire and the invasion of cheatgrass (Bromus tectorum L.) are some of the greatest challenges in western U.S. rangelands. The spread of wildfire has been shown to cause immediate and long-term changes to soil microbial communities, nutrient dynamics, and carbon dioxide (CO2) fluxes. These …
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Interactions between Bromus tectorum, grasshoppers, and native plants in sagebrush steppe communities
Invasion by the exotic grass Bromus tectorum L. (cheatgrass) has produced widespread, persistent changes in the Intermountain West. As a result of this and other disturbances, sagebrush shrubland is among North America's most imperiled ecosystems. Restoration of B. tectorum-infested areas has often …