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Critical habitat are areas considered essential for the conservation of a listed species. These areas provide notice to the public and land managers the importance of these areas to the conservation of this species. Special protections and/or restrictions are possible in areas where federal funding, permits, licenses, authorizations, or actions occur or are required.
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This raster represents a binary prediction of distribution (present/absent) for the species based on inductive modeling of environmental suitability. WYNDD defines the distribution of a species as the fine-scale environments within its range that are suitable for occupation. A common modeling algorithm, Maxent (Phillips et al., 2004), was used to generate predictive distribution models for Wyoming's Species of Greatest Conservation Need. The resulting models were clipped to the species' respective ranges (Keinath et al., 2010). References: Keinath, D.A., M.D. Andersen and G.P. Beauvais. (2010). Range maps for Wyoming's Species of Greatest Conservation Need. Report prepared for the Wyoming Game and Fish Department...
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We utilized nine microsatellite loci and 865 bases from two mtDNA genes to estimate demographic parameters and visualize historic/contemporary connectivity among populations of a sky-island rattlesnake (New Mexico ridge-nosed rattlesnake, Crotalus willardi obscurus). This taxon is listed as threatened under the United States Endangered Species Act (ESA) and is distributed patchily within three borderland mountain ranges [Animas (ANM), Peloncillo (PEL), Sierra San Luis (SSL)] of southeastern Arizona, southwestern New Mexico and north-central M�xico. Molecular data support a hypothesis of northward range expansion from M�xico, with subsequent isolation on sky-islands through vicariant desertification that transformed...
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ESRI file geodatabase of greater sage-grouse (Centrocercus urophasianus) range-wide breeding densities at 25% (BreedingDensity25), 50% (BreedingDensity50), 75% (BreedingDensity75) and 100% (BreedingDensity100) of breeding population. The objective of this BLM project is to map high breeding densities of greater sage-grouse for use in conservation planning. This completion report provides two deliverables: 1) The analytical framework for evaluating options on where partners can deliver actions that will yield the highest return on their conservation investment, and 2) The GIS shapefiles delineating high breeding densities of sage-grouse for use by conservation planners. Maps developed here provide a large-scale view...
Critical habitat are areas considered essential for the conservation of a listed species. These areas provide notice to the public and land managers the importance of these areas to the conservation of this species. Special protections and/or restrictions are possible in areas where federal funding, permits, licenses, authorizations, or actions occur or are required


    map background search result map search result map Geographic isolation, genetic divergence, and ecological non-exchangeability define ESUs in a threatened sky-island rattlesnake Range-wide Breeding Densities Geographic isolation, genetic divergence, and ecological non-exchangeability define ESUs in a threatened sky-island rattlesnake Range-wide Breeding Densities