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This dataset contains measures of natural vegetation fragmentation for the Colorado Plateau Ecoregion calculated using FRAGSTATS, a program which produces a series of metrics that are focused on fragmentation at the individual patch, class, and landscape levels. The fragmentation surface (input to FRAGSTATS) was created from NLCD Impervious Surfaces, LANDFIRE EVT, NatureServe National Landcover, roads, utility lines, power plants, pipelines, geothermal wells, mines, wind turbines, and oil/gas wells.The following three fragmentation metrics generated by FRAGSTATS (contained in this dataset) were chosen as input variables to the terrestrial landscape intactness logic model:1.) Number of patches [NP attribute] 2.)...
This dataset contains measures of natural vegetation fragmentation for the State of Utah calculated using FRAGSTATS, a program which produces a series of metrics that are focused on fragmentation at the individual patch, class, and landscape levels. The fragmentation surface (input to FRAGSTATS) was created from NLCD Impervious Surfaces, LANDFIRE EVT, NatureServe National Landcover, roads, utility lines, power plants, pipelines, geothermal wells, mines, wind turbines, and oil/gas wells.The following three fragmentation metrics generated by FRAGSTATS (contained in this dataset) were chosen as input variables to the terrestrial landscape intactness logic model:1) Number of patches2) Average mean nearest neighbor3)...
Synopsis: This study tested the null hypothesis that densities of mammalian populations are constant over patches of varied size. In other words, performance as estimated by density does not covary with patch area. Researchers used a composite database from published studies and found that densities of 20 out of 32 species did not vary with patch area. Five species showed increasing density-area relationships and seven species showed decreasing density-area relationships. Landscapes comprised of smaller, less isolated patched tended to have negative density-area relationships and landscapes with large, more isolated patched tended to have positive density-area relationships. These results indicate that there are...
Categories: Publication;
Types: Citation;
Tags: Density-area relationships,
Landscape fragmentation,
Natural cover amount,
configuration,
fragmentation,
This file geodatabase includes the 2013 Land Use/Land Cover (LULC) and the Marxan target rasters that were derived from it. For an explanation of why targets were selected and how they were derived, please refer to the report. The Python scripts used to generate the layers are also available via the GNLCC portal.
The landscape permeability model represents the structural connectivity of sagebrush ecosystem habitat in the Green River Basin (including ~5-10 km boundary outside of the GRB. This model connects patches of habitat, across the landscape using resistances that represent the degree of human modification and slope (energetic costs), using the Multi-Scale Landscape Permeability model (Theobald et al. 2012; Theobald unpublished). We used two metrics: (a) patch importance and (b) betweeness centrality amongst patches. These metrics were summarized for each HUC12. This dataset represents the vulnerability of sagebrush ecosystem permeability to human modification summarized for each HUC12 watershed within the Green River...
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