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A complete set of wells associated with oil, natural gas, and coal bed natural gas development in the western states as of June 2004. This is a static dataset even though liquid energy development is a highly dynamic endeavor. Because these well location datasets are generally housed and managed by various state-based agencies (typically the state Oil and Gas Conservation Commissions) a uniform, spatially precise coverage for the western United States has not been available to date. This layer consolidates the best available well location data from ND, SD, MT, WY, CO, NM, UT, AZ, OR, and CA (ID and WA do not report any liquid energy development) and standardizes the attributes. While static as of June 2004 the well...
Cellular phone microwave towers registered with the U.S. Federal Communications Commission. Not all antennas are required to be registered with the FCC, therefore, this data set does not necessarily depict all cellular phone communication towers actually present on the landscape. The source data are updated weekly by the FCC as new permits are issued. However, this particular data set is designed for a specific analysis, and is planned to remain static as of the publication date (7/22/2007).
Density of linear features, such as roads, power lines, telephone lines, and railroad tracks have been shown to influence synanthropic predator abundance patterns (Knight et al. 1995). Following Knight et al. (1995), we used linear features such as roads, railroads, and power line spatial data sets, but also included irrigation canals, to build a linear features spatial data set. However, we lacked spatial data on telephone and feeder-power lines and therefore our linear feature spatial data set vastly underestimates the number of linear features in some areas.
The topographic accessibility index is a measure of elevation in relation to valley floor corrected for variation in valley floor elevation across the western United States (i.e., valley floor elevation at California's coast is much lower compared to a valley floor in Wyoming). This index was based on 90-m resolution digital elevation model grids (DEM; National Elevation Dataset, USGS EROS [Earth Resources Observation Systems],3), and a landform model of the western United States (Manis et al. 2001), which delineates valley flats and near level plateaus or terraces (cell values, 1 or 4). We reclassified the landform model (cell value, 1) and multiplied this layer by the DEM to derive valley floor elevation. Using...
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Comma-separated values (.csv) file containing data related to mercury in smallmouth bass (Micropterus dolomieu) collected from the Snake River, USA.
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Greater sage-grouse (Centrocercus urophasianus) have been declining both spatially and numerically throughout their range due to anthropogenic disturbance and loss and fragmentation of sagebrush (Artemisia spp.) habitats. Understanding how sage-grouse respond to these habitat alterations and disturbances, particularly the types of disturbances and extent at which they respond, is critical to designing management actions and prioritizing areas of conservation. To address these needs, we developed this spatially explicit model of the relationship between occurrence and abundance of greater sage-grouse and multi-scaled measures of vegetation, abiotic, and disturbance in the Wyoming Basins Ecoregional Assessment (WBEA)...
This map depicts the distribution of sagebrush and associated shrub-steppe habitat types using readily available data from a variety of source maps from WA, OR, CA, UT, NV, CO, WY, MT, ND, SD, AZ, NM, AB, and BC. Habitat was grouped from map sources that were classified with detailed information on specific sagebrush types, as well as coarse-scale maps that classified vegetation as only "shrub" in the case of ND and the Canadian provinces. This map is a 90-meter grid, but source material included 30 to 90-meter grids, and 1:24,000 and 1:100,000 polygon coverages.
This is a map of populated areas with population density greater than or equal to 1 individual/ha (i.e., rural/exurban but including suburban and urban as defined by Marzluff et al. 2001) as determined from U.S. Census data corrected for public lands.
Powerlines in the western United States. Data was obtained from the ICEBMP existing utility corridors data set.
map background search result map search result map Oil and Natural Gas Wells, Western U.S. Communication Towers in the US Proportion of Juniper Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Low and Black Sagebrush Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Juniper Land Cover in the Wyoming Basins Ecoregional Assessment area Proportion of Low and Black Sagebrush Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Density of Line Features in the Western United States Mountain Sagebrush Land Cover in the Wyoming Basins Ecoregional Assessment area Proportion of Mountain Sagebrush Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mountain Sagebrush Land Cover (270-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mountain Shrubland Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Mean Annual Precipitation within the Wyoming Basins Ecoregional Assessment area Populated Areas in the Western United States Powerlines in the Western United States Density of all roads (km/sq km) within a 3-km radius in the Wyoming Basins Ecoregional Assessment area Distribution of Sagebrush and Associated Shrub-steppe Habitats in Western North America Greater sage-grouse roost site relative abundance in the Wyoming Basins Ecoregional Assessment area Maximum Annual Temperature in the Wyoming Basins Ecoregional Assessment area Topographic Accessibility Index Mercury in smallmouth bass from the Snake River, USA, 2013-2022 Mercury in smallmouth bass from the Snake River, USA, 2013-2022 Proportion of Mountain Sagebrush Land Cover (270-m scale) in the Wyoming Basins Ecoregional Assessment area Greater sage-grouse roost site relative abundance in the Wyoming Basins Ecoregional Assessment area Mountain Sagebrush Land Cover in the Wyoming Basins Ecoregional Assessment area Proportion of Juniper Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Low and Black Sagebrush Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Juniper Land Cover in the Wyoming Basins Ecoregional Assessment area Proportion of Low and Black Sagebrush Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mountain Sagebrush Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mountain Shrubland Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Mean Annual Precipitation within the Wyoming Basins Ecoregional Assessment area Density of all roads (km/sq km) within a 3-km radius in the Wyoming Basins Ecoregional Assessment area Maximum Annual Temperature in the Wyoming Basins Ecoregional Assessment area Density of Line Features in the Western United States Powerlines in the Western United States Distribution of Sagebrush and Associated Shrub-steppe Habitats in Western North America Oil and Natural Gas Wells, Western U.S. Topographic Accessibility Index Populated Areas in the Western United States Communication Towers in the US