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This map was developed to examine multi-scale spatial relationships between percentage of sagebrush and other response variables of interest. A map of sagebrush in the western United States was used as a base layer for a moving window analysis to calculate the percentage of the area classified as sagebrush within a 5-km search radius.
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Model of habitat utilization by synanthropic avian predators: common ravens (Corvus corax), American crows (Corvus brachyrhynchos), and black-billed magpies (Pica hudsonia). The former two species show increasing nation-wide population trends, and common ravens in the Mojave desert have been shown to have detrimental effects on threatened desert tortoise (Gopherus agassizii) populations. Power lines are used by common ravens and other raptors for nesting and as hunting perches. Linear features such as railroads, primary and secondary roads, and irrigation channels often serve as travel routes for these predators, and expand their movements into previously unused regions. Numbers of synanthropic avian predators increase...
Communication antenna towers registered with the U.S. Federal Communications Commission's Antenna Structure Registration (ASR) program. The FCC requires that all towers >200 ft tall and towers <200 ft that are positioned in the glide path of an airport be registered with the FCC ASR program. Therefore, this data set does not necessarily depict all communication antennas actually present on the landscape. The source data are updated weekly by the FCC as new permits are issued. However, this data set is designed for a specific analysis, and is planned to remain static as of the publication date (11/06/2003).
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Communication antenna towers recorded by the U.S. Federal Communications Commission's International Bureau Filing System (IBFS) - 47 CFR Parts 73/74, 23 and 25 (Earth Stations). Note that not all antennas and towers are required to be registered with the FCC. Therefore, this data set does not necessarily depict ALL communication features actually present on the landscape. The source data are updated daily by the FCC as new permits are issued. However, this data set is designed for a specific analysis, and is planned to remain static as of the publication date (11/06/2003).
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Greater sage-grouse population components devrived using an 18-km maximum connection distance. Analysis was conducted using the CONEFOR SENSINODE 2.2 software package and this dataset was developed from lek data obtained from the state wildlife agencies. Components containing < 5 leks have been removed in order to protect the location of single or small groups of leks.
map background search result map search result map Proportion of Sagebrush Land Cover (5-km scale) in the western US Proportion of All Sagebrush Species Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area ASR_towers_sgca Proportion of Big Sagebrush Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Probability of Synanthropic Corvid Presence in the Western United States Proportion of Grassland Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area All Interstates in the Western United States Proportion of Mixed Shrubland Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mixed Shrubland Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mountain Sagebrush Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Distance (m) to railroads within the Wyoming Basins Ecoregional Assessment area Distance (m) to power lines within the Wyoming Basins Ecoregional Assessment area Riparian Land Cover in the Wyoming Basins Ecoregional Assessment area Soil depth in the Wyoming Basins Ecoregional Assessment area Proportion of Salt Desert Shrub Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Sage Grouse Lek Components (2003-2007) Oil/Gas Well Density (5-km scale) in the Wyoming Basins Ecoregional Assessment area Solar Radiation Index in the Wyoming Basins Ecoregional Assessment area Minimum Annual Temperature in the Wyoming Basins Ecoregional Assessment area Proportion of Big Sagebrush Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Distance (m) to power lines within the Wyoming Basins Ecoregional Assessment area Soil depth in the Wyoming Basins Ecoregional Assessment area Oil/Gas Well Density (5-km scale) in the Wyoming Basins Ecoregional Assessment area Solar Radiation Index in the Wyoming Basins Ecoregional Assessment area Distance (m) to railroads within the Wyoming Basins Ecoregional Assessment area Proportion of All Sagebrush Species Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mixed Shrubland Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mixed Shrubland Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Mountain Sagebrush Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Riparian Land Cover in the Wyoming Basins Ecoregional Assessment area Proportion of Salt Desert Shrub Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Minimum Annual Temperature in the Wyoming Basins Ecoregional Assessment area Sage Grouse Lek Components (2003-2007) Proportion of Sagebrush Land Cover (5-km scale) in the western US All Interstates in the Western United States Probability of Synanthropic Corvid Presence in the Western United States ASR_towers_sgca