The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles.

The standard minimum mapping unit for NPS vegetation mapping projects is defined as 0.5 hectare, although several mapped polygons were smaller for HOSP. The vegetation map reveals that the distribution of communities generally conforms to the lay of the land (Figure 12). Communities often follow long ridges and side slopes and are thus distributed in a linear fashion. The Shortleaf Pine – Oak Dry-Mesic Woodland type was most abundant at HOSP, covering 35.7% of the area, exclusive of cultural areas and water. The Ouachita-Ozark Small Stream Hardwood Forest was second in area, followed closely by the Ozark/Ouachita Shortleaf Pine – Oak Dry Woodland, at about 20% of the area each. The Ozark/Ouachita Dry-Mesic White Oak – Black Oak – Hickory Forest accounted for 11.4% of the area. The Ouachita Novaculite Glade only covered 3.3 hectares, but this unique type was among the only areas of the park without a continuous woody canopy.

Minimum Mapping Unit = 0.5 hectare Minimum Patch Size = 0.01 hectares Total Size = 1402 Polygons Average Polygon Size = 3.92 acres (1.58 hectares) Overall Thematic Accuracy = 79.1% Project Completion Date: 08/2015