Filters: Tags: western juniper (X)
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The 2030 Western juniper viablitly was average based on the 7 climate models and clipped to the ecoregion.
Numerous studies have documented the expansion of woodlands in the Intermountain West; however, few have compared the chronology of expansion for woodlands across different geographic regions or determined the mix and extent of presettlement stands. We evaluated tree age structure and establishment for six woodlands in four ecological provinces in the central and northern Great Basin. Since 1860, the area occupied by piñon and or juniper has increased 125 to 625 percent. The increase of trees was a result of infill into shrub-steppe communities with relatively open low density stands of trees and expansion of piñon and juniper into sagebrush-steppe communities that previously did not support trees. Woodland expansion...
Categories: Publication;
Types: Citation,
ScienceBase Citation;
Tags: Utah juniper,
chronology,
old-growth,
singleleaf piñon,
succession,
Numerous studies have documented the expansion of woodlands in the Intermountain West; however, few have compared the chronology of expansion for woodlands across different geographic regions or determined the mix and extent of presettlement stands. We evaluated tree age structure and establishment for six woodlands in four ecological provinces in the central and northern Great Basin. Since 1860, the area occupied by pi�on and or juniper has increased 125 to 625 percent. The increase of trees was a result of infill into shrub-steppe communities with relatively open low density stands of trees and expansion of pi�on and juniper into sagebrush-steppe communities that previously did not support trees. Woodland expansion...
Categories: Publication;
Types: Citation;
Tags: Utah juniper,
chronology,
old-growth,
singleleaf pi�on,
succession,
Numerous studies have documented the expansion of woodlands in the Intermountain West; however, few have compared the chronology of expansion for woodlands across different geographic regions or determined the mix and extent of presettlement stands. We evaluated tree age structure and establishment for six woodlands in four ecological provinces in the central and northern Great Basin. Since 1860, the area occupied by pi�on and or juniper has increased 125 to 625 percent. The increase of trees was a result of infill into shrub-steppe communities with relatively open low density stands of trees and expansion of pi�on and juniper into sagebrush-steppe communities that previously did not support trees. Woodland expansion...
Categories: Publication;
Types: Citation;
Tags: Utah juniper,
chronology,
old-growth,
singleleaf pi�on,
succession,
Western juniper vegetation communities were extracted from state ReGAP and Landfire Exisitng Vegetation (California only). The individual rasters were mosaiced to create a single raster than represent Western juniper with the NGB ecoregion.
The current Western juniper viablitly was clipped to the ecoregion.
Abstract (from http://www.aimspress.com/aimses/ch/reader/view_abstract.aspx?doi=10.3934/environsci.2015.2.203): Contemporary pressures on sagebrush steppe from climate change, exotic species, wildfire, and land use change threaten rangeland species such as the greater sage-grouse (Centrocercus urophasianus). To effectively manage sagebrush steppe landscapes for long-term goals, managers need information about the potential impacts of climate change, disturbances, and management activities. We integrated information from a dynamic global vegetation model, a sage-grouse habitat climate envelope model, and a state-and-transition simulation model to project broad-scale vegetation dynamics and potential sage-grouse habitat...
Categories: Publication;
Types: Citation;
Tags: Birds,
Drought, Fire and Extreme Weather,
Fire,
Forests,
Grasslands and Plains,
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