This dataset assesses cumulative anthropogenic disturbance impacts on the landscape in Wyoming, improving methodology outlined by Copeland et al. (2007). We gathered known datasets that represented the impacts of human activities within the state of Wyoming. The following dataset layers were combined into one single raster grid: agricultural lands, mines, oil and gas pipelines, oil and gas wells, power lines, residential development, roads, and wind turbines. We assigned weights, cutoff distance of impact, and decay functions to each dataset layer (e.g., roads, etc.) to assign a cost surface value to each dataset. The value is derived from the weighted distance of the impact; the assigned value diminishes as distance from the disturbance increases. We normalized the values from zero to 100 using linear transformation, where zero represents areas of low human disturbance and 100 represents areas of high human disturbance. For a complete list of data sources and descriptions contact the Wyoming Game and Fish Department's Nongame Program in the Lander Regional Office.Cost Surface ParametersImpactsWeightDistance Decay FunctionDistance CutoffData SourceCommentsUrban Development - High/Medium500gradual2000 mgaplndcv6_wy - download 2009-11 http://gap.uidaho.edu/index.php/gap-home/Northwest-GAP/landcover/download-data-by-stateUrban Development - Low300gradual2000 mAgriculture300moderate-abrupt600 mgaplndcv6_wy - download 2009-11 http://gap.uidaho.edu/index.php/gap-home/Northwest-GAP/landcover/download-data-by-stateRoads - Primary/Secondary500moderate1250 mTIGER/Line files 2009 http://www.census.gov/geo/www/tiger/tgrshp2009/tgrshp2009.htmlRoads - Local/Primitive300abrupt250 mOil and Gas Wells - active400moderate1250 m110109 Well Header - Wyoming Oil and Gas Conservation Commission downloaded 2009-11Oil and Gas Wells - inactive200moderate-abrupt600 mPipelines - gas100abrupt250 m2010 Wyoming Pipeline AuthorityPipelines - other200moderate-abrupt600 m2010 Wyoming Pipeline AuthorityPowerlines200moderate-abrupt600 mUSGS 2004-06Wind Turbines400moderate1250 mNREL 2009-11Surface Mines500moderate1250 mWyoming DEQ 2009/2010: WYOMING_ACTIVE_COAL_PERMIT_BOUNDARIES_FEB2010.shpLQD_ACTIVE_PERMITS_112009.shpLQD_ACTIVE_LM_OPS_111709.shpBENTONITE_PERMIT_BNDRY.shp BENTONITE_MINE_DATAURANIUM_PERMIT_BNDRY_POLY.shpThe Trona mine boundary was removed due to surface impact overestimation - TNCFUNCTIONS:ImpactCutoffCurve EQAbrupt250(1 / (1 + Exp(((Distance / 100) - 1) * 5))) * WeightModerate-abrupt600(1 / (1 + Exp(((Distance / 100) - 2.5) * 2))) * WeightModerate1250(1 / (1 + Exp((Distance / 100) - 5))) * WeightGradual2000(1 / (1 + Exp(((Distance / 100) - 10) * 0.5))) * Weight
