Potential FIDS Habitat

The Indicator

Forest Interior Dwelling Species (FIDS) are particular plants and animals that require interior forest for at least some portion of their life cycle. Song birds and Delmarva fox squirrel are among the better known of these species.

This indicator was developed from the FIDS guidance paper for the Critical Area, given a statewide application here, and is defined as a forest tract that meets either of the following conditions:

Forest and non-forest land cover were defined from National Land Cover Data set (NLCD) and State Highway Administration roads data. Forest tract size is based on the total contiguous forest area regardless of property boundaries. Two forest tracts are considered noncontiguous if they are separated by at least 30 feet of nonforested habitat (e.g., road, transmission line right-of-way, cropland, etc.), about the typical width of a 2-lane, paved county road.

Indicator Use

As noted elsewhere, the interior forest that is critical to FIDS habitat is most threatened today by the fragmentation that comes with development of land into residential or other urban-type uses. The potential for an area to be FIDS habitat may also have implications for forestry practices in areas not subject to conversion to non-forestry uses like urbanization.

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