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Filters: partyWithName: Steve Hanser (X) > partyWithName: USGS Forest and Rangeland Ecosystem Science Center (X)

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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...
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Estimated potential for sage-grouse movement among sage-grouse leks (Circuitscape; McRae 2006). Rescaled HSI values were used as a measure of landscape resistance
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This map depicts the distribution of existing vegetation types contained in the LANDFIRE dataset. All 30-meter EVT grids were resampled to 90-meter grids and merged to create the final product.
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Humans have dramatically altered wildlands in the western United States over the past 100 years by using these lands and the resources they provide. Anthropogenic changes to the landscape, such as urban expansion, construction of roads, power lines, and other networks and land uses necessary to maintain human populations influence the number and kinds of plants and wildlife that remain. We developed the map of the human footprint for the western United States from an analysis of 14 landscape structure and anthropogenic features: human habitation, interstate highways, federal and state highways, secondary roads, railroads, irrigation canals, power lines, linear feature densities, agricultural land, campgrounds, highway...
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This map depicts the proportion of non-Sage-grouse habitat with 18km of each pixel. The map was produced using a moving window analysis on the Distribution of Non-Sage Grouse Habitat in the Conservation Assessment Area with a search radius of 18km. The product of the moving window was the mean pixel value within the window. This map has a 540m resolution.
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Habitat similarity index (HSI) values for greater sage-grouse across their western range. HSI values represent the relationship of environmental values at map locations to themultivariate model of minimum requirements for sage-grouse deļ¬ned by land cover, anthropogenic variables, soil, topography, and climate.
map background search result map search result map The Human Footprint in the West Proportion of All Big Sagebrush Land Cover (270-m scale) in the Wyoming Basins Ecoregional Assessment area Distance (m) to all roads within the Wyoming Basins Ecoregional Assessment area 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 LANDFIRE (90m) Existing Vegetation Type Average Normalized Difference Vegetation Index (NDVI) for the western United States (1989-2002) Proportion of Non-Sage-grouse Habitat Within an 18-km Radius Distance (m) to a pipeline within 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 Soil salinity in the Wyoming Basins Ecoregional Assessment area Soil sand content in the Wyoming Basins Ecoregional Assessment area Distance (m) to all roads within the Wyoming Basins Ecoregional Assessment area Estimated potential for sage-grouse movement Habitat similarity index (HSI) values for greater sage-grouse across their western range. Oil/Gas Well Density (5-km scale) in the Wyoming Basins Ecoregional Assessment area Oil/Gas Well Density (540-m scale) in the Wyoming Basins Ecoregional Assessment area Distance (m) to Oil or Gas Wells in the Wyoming Basins Ecoregional Assessment area Growing Season (May to August) Global Solar Radiation within the Wyoming Basins Ecoregional Assessment area Proportion of All Big Sagebrush Land Cover (270-m scale) in the Wyoming Basins Ecoregional Assessment area Distance (m) to all roads within 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 a pipeline within 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 Soil salinity in the Wyoming Basins Ecoregional Assessment area Soil sand content in the Wyoming Basins Ecoregional Assessment area Distance (m) to all roads within the Wyoming Basins Ecoregional Assessment area Oil/Gas Well Density (5-km scale) in the Wyoming Basins Ecoregional Assessment area Oil/Gas Well Density (540-m scale) in the Wyoming Basins Ecoregional Assessment area Distance (m) to Oil or Gas Wells in the Wyoming Basins Ecoregional Assessment area Growing Season (May to August) Global Solar Radiation within the Wyoming Basins Ecoregional Assessment area Estimated potential for sage-grouse movement Habitat similarity index (HSI) values for greater sage-grouse across their western range. Proportion of Non-Sage-grouse Habitat Within an 18-km Radius Average Normalized Difference Vegetation Index (NDVI) for the western United States (1989-2002) Probability of Synanthropic Corvid Presence in the Western United States The Human Footprint in the West LANDFIRE (90m) Existing Vegetation Type