Vegetation Classification and Mapping Project Report - USGS

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Appendix C: Global and local plant community descriptions Petrified Forest National Park. Two relevés were classified as Tamarix spp. Semi-natural Temporarily Flooded Shrubland, with total vegetation cover of 35 and 39%. This vegetation cover consisted of a tree stratum with 0 and 13% cover, a shrub stratum with 19 and 30% cover, and an herbaceous stratum of 5 and 7% cover. The species diversity for these two relevés was 12 and 23 species. The vegetation was dominated in the shrub and tree layer by the non-native invasive shrubs Tamarix spp., with a combined cover of 31 and 30%. Most abundant species: Stratum Global species PEFO species Tall.shrub/sapling Tamarix chinensis, Tamarix gallica, Tamarix chinensis Tamarix parviflora, Tamarix ramosissima Other noteworthy species: Global species Bromus tectorum, Lepidium latifolium, Poa pratensis PEFO species Data are not available. References: Baalman 1965, Carsey et al. 2003a, Cogan et al. 2004, Cowardin et al. 1979, Hansen et al. 1995, Hansen et al. 2004b, Hoagland 2000, Holland 1986b, MTNHP 2002b, Muldavin et al. 2000a, NVNHP 2003, Nachlinger and Reese 1996, Ortenberger and Bird 1933, Paysen et al. 1980, Sawyer and Keeler- Wolf 1995, Smith 1989, Stevens and Shannon 1917, Szaro 1989, Ungar 1968, Von Loh et al. 2002, Ware and Penfound 1949, Western Ecology Working Group n.d. C63
Vegetation Classification and Distribution Mapping Report: Petrified Forest National Park C.4 Herbaceous C.4.1. Atriplex obovata / Sporobolus airoides - Pleuraphis jamesii Shrub Herbaceous Vegetation Base map class NatureServe common name NatureServe code New.Mexico.Saltbush./.Alkali.Sacaton.-.Galleta.Shrub. Herbaceous.Vegetation New.Mexico.Saltbush./.Alkali.Sacaton.-.James’.Galleta.Shrub. Herbaceous.Vegetation CEGL001775 Summary: This association occurs on alluvial flats in the southern Colorado Plateau in northwestern New Mexico and adjacent Arizona at 1680-1811 m (5570-5940 ft) elevation. Slopes are minimal and range from 0 to 6%. Soils are typically shallow, alkaline, and calcareous and are derived from alluvium. Soil texture ranges from fine sandy loam to silty clay loam. Ground cover is largely bare soil, sometimes with high cover of surface rock, including basalt, gravel, and petrified wood. The vegetation is characterized by an open dwarf-shrub canopy of Atriplex obovata with a grassy understory dominated by Pleuraphis jamesii and Sporobolus airoides. Other shrubs may be present with very low cover, including Atriplex confertifolia, Gutierrezia sarothrae, Krascheninnikovia lanata, Opuntia imbricata, Opuntia polyacantha, and Sarcobatus vermiculatus. Associated graminoids may include Elymus elymoides, Muhlenbergia torreyi, Schedonnardus paniculatus, and Sporobolus cryptandrus. Forb cover is typically low but may be diverse. Classification confidence: 3 - Weak. Classification comments: Globally. Data are not available. Petrified Forest National Park. Data are not available. Vegetation hierarchy: Physiognomic class V Herbaceous.Vegetation Physiognomic subclass V.A. Perennial.graminoid.vegetation Physiognomic group V.A.7. Temperate.or.subpolar.grassland.with.a.sparse.shrub. layer Physiognomic subgroup V.A.7.N. Natural/Semi-natural.temperate.or.subpolar.grassland. with.a.sparse.shrub.layer Formation name V.A.7.N.e Medium-tall.temperate.or.subpolar.grassland.with.a. sparse.needle-leaved.or.microphyllous.evergreen.shrub. layer Alliance name Sporobolus airoides.-.(Pleuraphis jamesii).Shrub. Herbaceous.Alliance.(A.1532),.Alkali.Sacaton.-.(James’. Galleta).Shrub.Herbaceous.Alliance Ecological systems placement: Ecological system unique ID CES304.788 CES304.784 Ecological system name Inter-Mountain.Basins.Semi-Desert.Shrub-Steppe Inter-Mountain.Basins.Mixed.Salt.Desert.Scrub NatureServe conservation status: Global rank. GU (23-Feb-1994). C64
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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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Appendix C: Global and Local Plant
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Appendix C: Global and Local Plant
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Appendix D Plant species list The s
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D3 Appendix D continued Scientific
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Appendix E Plant community and map
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Appendix E: Plant community and map
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Appendix F Plant community and map
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F3 Appendix F continued Plant commu
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Appendix F continued Plant communit
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G4 B1 Cottonwood / Rubber Rabbitbru
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G6 B3 Blue Sage Dwarf-Shrubland Fig
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G8 B5 Copperweed - Alkali Sacaton S
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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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Vegetation Classification and Mapping Project Report - USGS

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