Click on the park name for statistics and maps relevant to the park.
These statistics in the linked reports are based on Designing Sustainable Landscapes (DSL) models of 2010 Landscape Capability (LC) and 2080 Climate Refugia. Both of these datasets are indices of the ability of the landscape and climate to support populations of the species. They have a theoretical range from 0 to 1 but in practice the maximum values are usually below 1. Both LC and Climate Refugia are based on 2010 landcover but differ in the climate suitability; in LC the climate suitability is derived from 2010 climate variables while climate refugia is based on 2080 climate, while limiting the extent of the species to areas where the climate was suitable in 2010. For a full description of the species modeling process see the documentation. The underlying GIS data is available at http://umassdsl.org - use the version 3 species data links.
For all parks but the Appalachian National Scenic Trail the statistics are calculated on the park with an additional 5 km buffer. The buffer was added so that even with small parks there’s sufficient data to characterize the species.
For the Appalachian National Scenic Trail the statics were calculated on subregions and the name contains “APPA” and then the subregion. For these units no buffer was added to the subregion because they already contain a substantial buffer around the trail.