Vegetation Classification and Mapping Project Report - USGS

B2 One-seed Juniper / Bigelow’s Sagebrush Shrubland
Location: One-seed Juniper / Bigelow’s Sagebrush Shrubland was located throughout the park and its
environs in a few small to large map units. These map units tended to occur on higher elevation mesas and
plateaus and were most frequent on Chinde Mesa, Headquarters Mesa, and in the southwestern corner of
the project area.
Photosignature: Juniperus monosperma appeared as small, globular, green trees. They tended to be the
tallest vegetation in the uplands and were easily identified. Artemisia bigelovii, a gray green dwarf shrub,
was not easily identifiable. In areas where the soil had a strong color, Artemisia bigelovii were not always
observable. In these areas, the dwarf shrubs were inferred to co-occur with Juniperus monosperma. In
other areas, a uniform, gray green, smooth, speckled signature indicative of Artemisia bigelovii could be
seen. Artemisia bigelovii did not always occur as a dominant species in the understory; in some areas it
occurred only as an indicator species.
G5
Figure.G3..Ground.photo.for.map.class.B2,.Oneseed.Juniper./.Bigelow’s.Sagebrush.Shrubland.
Figure.G4..Photosignature.for.map.class.B2,.Oneseed.Juniper./.Bigelow’s.Sagebrush.Shrubland.
Plant communities
Juniperus monosperma / Artemisia bigelovii Woodland
Group map class Colorado Plateau Pinyon-Juniper Woodland (1 of 1)
Management map class One-seed Juniper / Bigelow's Sagebrush Shrubland (1
of 1)
Macrogroup map class Colorado Plateau Pinyon-Juniper Woodland (1 of 1)
Number of map units in park 11
Number of map units in park & environs 27
Number of map units less than 0.5 ha 16 (1.6% of total map class area)
Area of map class in park
70.8 ha / 174.9 ac
Total area of map class
211.4 ha / 522.3 ac
Proportion of land cover in park 0.2%
Proportion of map class in project environs 66.5%
Base map class accuracy
user 81.8 (57.3 - 93.8), producer 100.0 (NA)
Group map class accuracy user 81.8 (57.3 - 93.8), producer 100.0 (76.9 - 100.0)
Management map class accuracy user 81.8 (57.3 - 93.8), producer 100.0 (76.9 - 100.0)
Macrogroup map class accuracy user 81.8 (57.3 - 93.8), producer 100.0 (76.9 - 100.0)
Documentation for base map class
2 2003 relevés, 0 1996 relevés, 12 AA observation sites
Appendix G: Map Class summaries