Vegetation Classification and Mapping Project Report - USGS

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Appendix C: Global and Local Plant Community Descriptions NatureServe conservation status: Distribution: Global rank. GNR (21-Mar-2005). Globally. This association occurs in Petrified Forest National Park in northern Arizona and Capitol Reef National Park in southeastern Utah. It is likely to occur on suitable habitat throughout the central Colorado Plateau. Petrified Forest National Park. Ephedra torreyana - Artemisia bigelovii Sparse Vegetation was sampled from twelve relevés. It occurred throughout the park, mostly on terraces, cliffs and plateaus, near drainage channels, on rocky slopes, rock piles, and sandy surfaces. Two of the stands occurred on midslopes. This association occurred throughout the entire project area, with relevés sampled from north of the Lithodendron Wash at Pilot Rock in the northern wilderness area, to the central neck of the park, The Flattops, and near Jim Camp Wash in the southern part of the park. Environmental summary: Globally. This Colorado Plateau association has been described from Petrified Forest National Park in northern Arizona and Capitol Reef National Park in southeastern Utah, where it is widespread. Stands occur on plateaus, mesas, ridges, hills, cliffs, rocky colluvial slopes, benches, terraces, and near drainage channels that are gently sloping to steep (3-50%) between 1402 and 1915 m elevation. Aspect is not an important factor in determining the distribution of this association. The unvegetated surface has moderate to high cover of gravel and low to moderate cover of large rocks and litter. Cryptogams are typically absent, but one stand had 75% cover. Parent materials include sandstones and shale of the Summerville, Entrada, Curtis, Chinle, Carmel, Salt Wash Member and Emery formations. Soils are rapidly drained and variable in texture, including loams, sands, and clays, but are unified by a coating of fine to coarse gravels composed of sandstone, shale, basalt, or petrified wood. Petrified Forest National Park. This association occurred between 1655 and 1880 m (5430- 6170 ft) elevation. Slopes ranged from none to steep (0-43%, average 8%). Several of the relevés had surface rocks that consisted of sandstone, basalt, various gravel, and petrified wood. USFWS wetland system: Not applicable. Vegetation description: Globally. This vegetation association is typically sparse (
Vegetation Classification and Distribution Mapping Report: Petrified Forest National Park Petrified Forest National Park. Ten relevés were classified as Ephedra torreyana - Artemisia bigelovii Sparse Vegetation, with total vegetation cover ranging from 10 to 40% (average 20%). The vegetation cover consisted of 9-20% within the shrub stratum (average 13%) and
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National Park Service U.S. Departme
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Vegetation Classification and Distr
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The National Park Service, Natural
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Acronyms and Abbreviations AA ac AP
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Executive Summary The classificatio
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Acknowledgments Behind the authors
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Axis 3 Axis 2 Vegetation Classifica
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20 Table 5. continued Plant communi
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40 Table 13. Base map class summary
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46 Table 16. Summary statistics for
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56 Table 22. Summary statistics for
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Literature Cited ties: Terrestrial
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B2 Appendix B Plant Community 2003
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B4 Appendix B .continued Plant Comm
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Appendix C: Global and local plant
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Page 208 and 209: Appendix D Plant species list The s
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Page 237 and 238: Vegetation Classification and Distr
Page 239 and 240: G4 B1 Cottonwood / Rubber Rabbitbru
Page 241 and 242: G6 B3 Blue Sage Dwarf-Shrubland Fig
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G10 B7 Drummond Goldenweed - Gallet
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G12 B9 Greasewood / New Mexico Salt
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G14 B11 Iodine Bush Shrubland Figur
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G16 B13 Sandsage Colorado Plateau S
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G18 B15 Tamarisk Shrubland Figure.G
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G20 B17 Winter-fat / Blue Grama Dwa
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G22 B19 Alkali Sacaton - Blue Grama
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G24 B21 Blue Grama Herbaceous Veget
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G26 B23 Galleta - Alkali Sacaton He
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G28 B25 New Mexico Saltbush / Alkal
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G30 B27 Russian Thistle Sand Dune V
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G32 B29 Arizona Siltbush Sparse Veg
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G34 B31 Slender Buckwheat Sparse Ve
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G36 B33 Airstrip Figure.G65..Photos
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G38 B35 Barren Wash Figure.G68..Gro
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G40 B37 Park Sites Figure.G71..Phot
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G42 B39 Residences Figure.G73..Phot
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G44 B41 Run-off Control Feature Fig
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G46 B43 Stock Ponds Figure.G77..Pho
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G48 B45 Vegetated Wash Complex Figu
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Appendix H: Accuracy Assessment Dat
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Table H-4. Contingency table: Manag
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The Department of the Interior prot
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