Filters: Tags: Northern Great Basin Ecoregion (X)
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303(d) listed waterways was downloaded from the EPA website. Areas listed as 303(d) were extracted and compared to the overall amount of non 303(d) waterways to establish a percentage of waterways that were 303(d).
This dataset was developed by the USGS for use in regional climate simulation analyses. These data were applied in the BLM REA analysis for the NGB ecoregion. For more information pertaining to these data and climate modeling, please refer to http://regclim.coas.oregonstate.edu/.
The euclidean distance to roads from the USFS grazing allotments was calculated to determine which grazing allotments had the fewest roads in proximity.
Cheatgrass mapping from Singh and Glenn in 2009.
Development change agents were mosaiced together and the euclidean distance was calculated. Salt Desert Shrub communiities were used to extract the distances then zonal statistics calculated the average within the 4km analysis unit.
Human density was calculated from 2010 US Census Bureau's P2 dataset to determine the population per square kilometer.2 - 27 persons/km2 = moderate> 27 persons/km2 = lower quality
Bull trout key ecological attributes (burn probability, 303(d) waters, fish barriers, flood risk, water temperature increase and aquatic invasives) were added together to determine an overall score for the analysis unit within the bull trout range.
Types: Downloadable;
Tags: BLM,
Bull Trout,
Bureau of Land Management,
Cumulative Indicator Score,
DOI,
White Sturgeon key ecological attributes (burn probability, 303(d) waters and aquatic invasives) were added together to determine an overall score for the analysis unit within the white sturgeo range in the Snake River.
Types: Downloadable;
Tags: BLM,
Bureau of Land Management,
Cumulative Indicator Score,
DOI,
Geospatial,
Vegetation cover was extracted from the Landfire Existing Vegetation Cover dataset. The percent cover of sagebrush was extracted from this dataset and used in the analysis.> 40% of analysis unit containing sagebrush cover = good20-40% of analysis unit containing sagebrush cover = moderate
Salt Desert Shrub cummulative score was based on ranking burn probability and distance to development into three categories (1 lowest quality - 3 highest quality). The layers were added together to yield scores ranging from 2 (lowest quality in all twolayers) - 6 (highest quality in all two layers).
The current Lodgepole pine viablitly was clipped to the ecoregion.
The water erosion potential is calculated using the Revised Universal Soil Loss Equation (RUSLE. It is based on the rainfall erosivity (R), soil erodibility (K), slope steepness (S), and tolerable soil loss (T) is calculated as R*K*S / T where T is the tolerable soil loss. The water erosion potential assumes that there is no cover and no management practices and is base on in the instrinsic properties of the soil and the local climate and topography.
The FSim burn probability was used to determine the majority (most common) burn probability within a 4km analysis unit in areas with Low sagebrush vegetation communities withing the ecoregion.
The analysis units intersecting with the range of the species was extracted to use in other process models so that the entire range was analyzed.
Development change agents were mosaiced together and the euclidean distance was calculated. Juniper communiities were used to extract the distances. The resulting layer was used in the intactness calculation.
This dataset was developed by the USGS for use in regional climate simulation analyses. These data were applied in the BLM REA analysis for the NGB ecoregion. For more information pertaining to these data and climate modeling, please refer to http://regclim.coas.oregonstate.edu/.
Combined junipervegetation communities were extracted from state ReGAP and Landfire Exisitng Vegetation (California only). The individual rasters were mosaiced to create a single raster than represent Combined juniper with the NGB ecoregion.
This dataset was developed by the USGS for use in regional climate simulation analyses. These data were applied in the BLM REA analysis for the NGB ecoregion. For more information pertaining to these data and climate modeling, please refer to http://regclim.coas.oregonstate.edu/.
The metrics used to assess the size of core habitat fragments was developed by considering the average home range for mule deer in the intermountain west. Habitat fragment size does not pertain to the minimum habitat area, but rather reflects landscape fragments that are easily traversed by mule deer as they move between patches of suitable habitat. Using the Habitat Core Area (HCA) toolset developed by WHCWG (2010), large, contiguous core habitat fragments were identified that presented no permeability restrictions and retained high levels of naturalness (i.e., core areas characterized by a relatively light human footprint). Habitat fragments larger than 500 ha were considered good, fragments between 300-500ha...
The FSim burn probability was used to determine the burn probability of the white sturgeon range in the ecoregion. This layer was used to examine wildfire risk to areas within the white sturgeon range.
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