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A total of 188 acres (76 hectares) were within the accepted boundaries of HEHO (Figure 7). The standard minimum mapping unit for NPS vegetation inventory projects is defined as 0.5 hectare, although several mapped polygons were smaller for HEHO. Restored tallgrass prairie made up most of the current vegetation of the park, and accounted for 71.6 acres (29 hectares) in nine polygons, or 58.0% of the total non-developed area. Pasture and old field made up 38.9 acres (15.7 hectares), or 31.6% of the area, in a single polygon. Forb ruderal herbaceous vegetation made up 7.4% of the area in four polygons, and bottomland ruderal woodland made up 2.8 acres (1.1 hectares), or 1.1% of the area. Reed canarygrass, western herbaceous...
A total of 198.6 acres (80.4 hectares) are within the accepted boundaries of LIBO (Figure 8). The standard minimum mapping unit for NPS vegetation mapping projects is defined as 0.5 hectare, although several mapped polygons were smaller for LIBO. Ruderal forest was the predominant type, accounting for 93 acres (37.6 hectares), or 56.5% of the non-developed land. Restored Deciduous Forest was the next largest type, accounting for 49.4 acres (20.0 hectares, 30.0%). The Ruderal Grassland and Black Oak-White Oak-(Pignut, Shagbark) Hickory types accounted for just over 10 acres (4 hectares, 6.2%) each. Developed land accounts for 33.5 acres (13.6 hectares) of the park.
A total of 294.7 acres (119.3 hectares) are within the accepted boundaries of PIPE (Figure 8). The standard minimum mapping unit for NPS vegetation mapping projects is defined as 0.5 hectare, although several mapped polygons were smaller for PIPE. Central Mesic Tallgrass Prairie made up 57.3% of the vegetated area of the monument, and dominated the view shed (157.1 acres; 63.6 hectares). The Restored Tallgrass Prairie made up another 24.4% of the monument, and was continuous with Central Mesic Tallgrass Prairie. Northern Tallgrass Quartzite Outcrop vegetation formed an essentially continuous, narrow belt along the length of a Sioux quartzite outcrop, including the lip of the rim of a bluff in some areas, and made...
Seven vegetation types were identified at HOCU, and developed land made up an eighth type. Six types were distinguished based on ordination and cluster analyses (Figure 7), and one type, Eastern North American Wet Meadow Group, was recognized based on field observation points. This type consisted of five roughly circular patches less than 30 feet (9.1 meters) in diameter. Based on initial analysis of all 33 plots, seven plots were recognized as representing two types, Orchardgrass-Timothy-Fescue species-Goldenrod species Herbaceous Vegetation (five) and Restored Tallgrass Prairie (two). These plots were removed and data for the remaining 26 plots were re-analyzed (Figure 7). From the second round of analyses, four...
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