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Full-Text Articles in Life Sciences
Plant Establishment And Soil Microenvironments In Utah Juniper Masticated Woodlands, Kert R. Young
Plant Establishment And Soil Microenvironments In Utah Juniper Masticated Woodlands, Kert R. Young
Theses and Dissertations
Juniper (Juniperus spp.) encroachment into sagebrush (Artemisia spp.) and bunchgrass communities has reduced understory plant cover and allowed juniper trees to dominate millions of hectares of semiarid rangelands. Trees are mechanically masticated or shredded to decrease wildfire potential and increase desirable understory plant cover. When trees are masticated after a major increase in tree population density and associated decrease in perennial understory cover, there is a risk that invasive annual grasses will dominate because they are highly responsive to the increased resource availability that commonly follows removal of the main resource user. To determine if tree mastication increases …
An Object-Based Image Analysis Of Treated And Untreated Pinyon And Juniper Woodlands Across The Great Basin, April Hulet
An Object-Based Image Analysis Of Treated And Untreated Pinyon And Juniper Woodlands Across The Great Basin, April Hulet
Theses and Dissertations
Land managers need to rapidly assess vegetation composition and bare ground to effectively evaluate, manage, and restore shrub steppe communities that have been encroached by pinyon and juniper (P-J) trees. A major part of this process is assessing where to apply mechanical and prescribed fire treatments to reduce fuel loads and maintain or restore sagebrush steppe rangelands. Geospatial technologies, particularly remote sensing, offers an efficient option to assess rangelands across multiple spatial scales while reducing the need for ground-based sampling measurements. High-spatial resolution color-infrared imagery (0.06-m pixels) was acquired for sagebrush steppe communities invaded by P-J trees at five sites …