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Service Description: Spring, summer and winter seasonal use areas are mapped by the Bureau of Land Management (BLM) for Idaho. Idaho SUAs are a generalized set of polygons representing spring, summer, and winter habitat for Greater Sage-Grouse. The IDF&G habitat suitability index (HSI) model was used as a starting point, which was built using a species distribution modeling technique known as maximum entropy, or Maxent. The program Maxent uses known point locations (e.g. VHF and GPS telemetry points) and a suite of habitat predictor variables (GIS layers) to characterize conditions of occupied habitat. We selected habitat variables related to vegetation type, percent cover, topography, and landscape context (e.g., how much of the landscape has at least 10 percent sagebrush cover). Maxent models the set of conditions that are typically found at the training points, then applies that model to the full landscape, creating a wall-to-wall estimate of habitat suitability based on how similar conditions are to occupied habitat.
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Description: Spring, summer and winter seasonal use areas are mapped by the Bureau of Land Management (BLM) for Idaho. Idaho SUAs are a generalized set of polygons representing spring, summer, and winter habitat for Greater Sage-Grouse. The IDF&G habitat suitability index (HSI) model was used as a starting point, which was built using a species distribution modeling technique known as maximum entropy, or Maxent. The program Maxent uses known point locations (e.g. VHF and GPS telemetry points) and a suite of habitat predictor variables (GIS layers) to characterize conditions of occupied habitat. We selected habitat variables related to vegetation type, percent cover, topography, and landscape context (e.g., how much of the landscape has at least 10 percent sagebrush cover). Maxent models the set of conditions that are typically found at the training points, then applies that model to the full landscape, creating a wall-to-wall estimate of habitat suitability based on how similar conditions are to occupied habitat.
Copyright Text: Bureau of Land Management and Idaho Department of Fish and Game
Spatial Reference:
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Full Extent:
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Spatial Reference: PROJCS["NAD_1983_Albers",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-96.0],PARAMETER["Standard_Parallel_1",29.5],PARAMETER["Standard_Parallel_2",45.5],PARAMETER["Latitude_Of_Origin",23.0],UNIT["Meter",1.0]]
Units: esriMeters
Document Info:
Title: BLM ID Greater Sage-grouse Seasonal Use Areas poly
Author:
Comments: Spring, summer and winter seasonal use areas are mapped by the Bureau of Land Management (BLM) for Idaho. Idaho SUAs are a generalized set of polygons representing spring, summer, and winter habitat for Greater Sage-Grouse. The IDF&G habitat suitability index (HSI) model was used as a starting point, which was built using a species distribution modeling technique known as maximum entropy, or Maxent. The program Maxent uses known point locations (e.g. VHF and GPS telemetry points) and a suite of habitat predictor variables (GIS layers) to characterize conditions of occupied habitat. We selected habitat variables related to vegetation type, percent cover, topography, and landscape context (e.g., how much of the landscape has at least 10 percent sagebrush cover). Maxent models the set of conditions that are typically found at the training points, then applies that model to the full landscape, creating a wall-to-wall estimate of habitat suitability based on how similar conditions are to occupied habitat.
Subject: Greater Sage-Grouse (Centrocercus urophasianus) seasonal use areas are mapped by the Idaho Bureau of Land Management (BLM) to guide how habitat is measured for suitability assessments. Mapped seasonal use areas include areas used by sage-grouse during the spring, summer, and winter. Please note that the three seasonal use areas (spring, summer, winter) overlap each other spatially so need to be symbolized with hollow fills or drawn using a definition query to display them individually. These data are current as of November 2019.
Category:
Keywords: biota,Bureau of Land Management,Caribou-Targhee,Centrocercus urophasianus,Department of the Interior,GRSG,Habitat,Idaho,Nevada,Oregon,Seasonal Habitat,Spring Habitat,Summer Habitat,Utah,Western States,Wildlife,Winter Habitat,Wyoming
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