Vegetation Classification and Mapping Project Report - USGS

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Appendix C: Global and local plant community descriptions Most abundant species: Stratum Tall.shrub/sapling Short.shrub/ sapling Global species Amelanchier utahensis, Rhus trilobata var. trilobata N/A PEFO species N/A Rhus trilobata, Ephedra torreyana, Ephedra viridis Other noteworthy species: Global species Data are not available. PEFO species Data are not available. References: Western Ecology Working Group n.d. C49
Vegetation Classification and Distribution Mapping Report: Petrified Forest National Park C.3 Shrubland C.3.14. Salix exigua / Barren Shrubland Base map class NatureServe common name NatureServe code Coyote.Willow.Shrubland Coyote.Willow./.Barren.Shrubland CEGL001200 Summary: This riparian shrubland is common in the Rocky Mountains, Colorado Plateau, and Great Basin. It is composed of nearly pure stands of Salix exigua, with few other species. Exposed gravel, cobbles, or sand characterize the ground cover, but an undergrowth of a few, scattered forbs and grasses is usually present. This association occurs within the annual flood zone of rivers on point bars, islands, sand or cobble bars, and streambanks. Classification confidence: 1 - Strong. Classification comments: Globally. In the western Great Plains this association includes stands composed of intermediates between Salix interior (= Salix exigua ssp. interior) and Salix exigua (= Salix exigua ssp. exigua) (Dorn 1997, G. Kittel pers. comm. 2001). Until recently these taxa were combined at the species level (Kartesz 1999). More information on the distribution of introgression between Salix interior (= Salix exigua ssp. interior) and Salix exigua (= Salix exigua ssp. exigua) is needed to fully understand the ranges of these two species. Petrified Forest National Park. The understory of this association was sparse but not totally barren. This association may be better classified under a different association classification. Currently, the classification is based on pre-existing NVCS association nomenclature and might be better classified with additional sampling of Salix exigua communities at Petrified Forest National Park. Vegetation hierarchy: Physiognomic class III Shrubland Physiognomic subclass III.B. Deciduous.shrubland Physiognomic group III.B.2. Cold-deciduous.shrubland Physiognomic subgroup III.B.2.N. Natural/Semi-natural.cold-deciduous.shrubland Formation name III.B.2.N.d. Temporarily.flooded.cold-deciduous.shrubland Alliance name Salix.(exigua, interior).Temporarily.Flooded.Shrubland. Alliance.(A.947),.(Coyote.Willow,.Sandbar.Willow). Temporarily.Flooded.Shrubland.Alliance Ecological systems placement: Ecological system unique ID CES306.821 Ecological system name Rocky.Mountain.Lower.Montane-Foothill.Riparian.Woodland. and.Shrubland NatureServe conservation status: Global rank. G5 (15-Jun-2001). C50
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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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Page 89 and 90: B2 Appendix B Plant Community 2003
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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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