The terrestrial ecosystem-based core area selection index was used to create terrestrial ecosystem-based cores. It incorporates the weighted index of ecological integrity (IEI), The Nature Conservancy’s terrestrial resiliency index, The Nature Conservancy’s mapped ‘tier 1’ floodplains, and rare natural communities (S1-S3 ranks) as defined and mapped by the state Natural Heritage programs. This layer can be used to add meaning to the core areas as mapped, as well as fill in the areas around core areas with a more detailed map of their relative ecological value.
View this product as a web map on Data Basin.
Access this data as a GIS download from the North Atlantic LCC website.
Read the Technical Abstract for this data layer (tSelectionIndex.tif).