Skip to main content
Advanced Search

Filters: partyWithName: U.S. Geological Survey (X) > Types: Downloadable (X) > partyWithName: FRESC Metadata Coordinator (X)

125 results (16ms)   

View Results as: JSON ATOM CSV
This map depicts the forested regions in the western United States. Data was obtained from the the Sagestitch map and other state-level GAP land cover maps and merged into 90m raster dataset.
Human-induced fires have increased the frequency at which fires occur on the landscape. Fires increase the probability of invasion by exotic plant species as well as destroy existing habitats. This model was developed to depict the density of human caused fire ignition points throughout the western United States. Data from the National Fire Ignition Database from 1986 to 2001 was used to calculate the density of human-induced fire ignitions (ignitions / km).
Elevation in the western United States obtained from the National Elevation Dataset. Data was converted from float point to integer format and re-sampled from 30m resolution to 180m resolution.
This model is based on how dogs utilize wildlands near human habituation. These predators can have detrimental effects on wildlife populations (Alterio et al. 1998). We based our model on the data collected by Odell and Knight (2001) that investigated habitat utilization of these predators with regard to distance from housing and on the probability for a homeowner to possess a dog. We buffered both the populated areas and the campground distance layers in ARC/INFO using probability functions [P = 0.548 - 1.4589 * Distance (km)]. Any cell with distance less than 0.36km received a probability based on the function (0.556 to 0.001572) and all distances greater than or equal to 0.36km from populated areas or campgrounds...
A summary data set of all fire polygons we could locate as of December 2007. We used multiple datasets to develop this layer, including data gathered from the internet, publically available databases, and personal contacts with dozens of agency personnel throught the western U.S. Data were assessed for utility (but not accuracy) and formatted for consistency. Each source data set was then attributed consistently with fields for record number and year (of fire). Because various resource management entities map fires somewhat independently (especially in more recent years) we merged overlapping polygons for each year. Users are encouraged to understand the contents of this data file before using it.
Elevation in the western United States obtained from the National Elevation Dataset. Data was converted from float point to integer format and re-sampled from 30m resolution to 90m resolution.
Boundary for floristic regions used for the conservation assessment of Greater Sage-grouse and sagebrush habitat conducted by the Western Association of Fish and Wildlife Agencies. The floristic provinces were digitized from a figure from Miller, R. F., and L. Eddleman, 2001 (See source input for reference).
map background search result map search result map Proportion of All Big Sagebrush Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of All Big Sagebrush Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Agricultural Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of All Sagebrush Species Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of All Sagebrush Species Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Big Sagebrush Land Cover in the Wyoming Basins Ecoregional Assessment area Elevation in the Western United States (90 meter DEM) Elevation in the Western United States (180 meter DEM) Probability of Synanthropic Feral Dog Presence in the Western United States Proportion of Exotic Grass and Forbs Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (270-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Human Caused Fire Density in the Western United States (1986 - 2001) Floristic Provinces of Sagebrush and Associated Shrub-steppe Habitats in Western North America Forested Areas in the Western United States Grassland Land Cover in the Wyoming Basins Ecoregional Assessment area Proportion of Juniper Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Juniper Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mountain Shrubland Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Western Range Fires (1870-2007) Proportion of All Big Sagebrush Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of All Big Sagebrush Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Agricultural Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of All Sagebrush Species Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of All Sagebrush Species Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Big Sagebrush Land Cover in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (270-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Grassland Land Cover in the Wyoming Basins Ecoregional Assessment area Proportion of Juniper Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Juniper Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mountain Shrubland Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Floristic Provinces of Sagebrush and Associated Shrub-steppe Habitats in Western North America Western Range Fires (1870-2007) Human Caused Fire Density in the Western United States (1986 - 2001) Forested Areas in the Western United States Elevation in the Western United States (90 meter DEM) Probability of Synanthropic Feral Dog Presence in the Western United States Elevation in the Western United States (180 meter DEM)