Vegetation Classification and Mapping Project Report - USGS

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Appendix C: Global and local plant community descriptions Petrified Forest National Park. The one relevé classified as Pinus edulis - (Juniperus osteosperma) / Bouteloua gracilis Woodland may need to be reassessed with additional data collected at Petrified Forest National Park and the Navajo Nation. This relevé was separated from Juniperus monosperma / Artemisia bigelovii Woodland (CEGL000705) based on codominance of Pinus edulis in the tree layer. However, the Juniperus monosperma / Artemisia bigelovii Woodland association does have similar characteristics to the relevé described here: it lacks cover of Bouteloua gracilis in the herbaceous layer and has a dominance of Artemisia bigelovii in the shrub layer. Vegetation hierarchy: Physiognomic class I Woodland Physiognomic subclass I.A Evergreen.woodland Physiognomic group I.A.4 Temperate.or.subpolar.needle-leaved.evergreen.woodland Physiognomic subgroup I.A.8.N Natural/Semi-natural.temperate.or.subpolar.needle-leaved. evergreen.woodland Formation name I.A.4.N.a Natural/Semi-natural.temperate.or.subpolar.needle-leaved. evergreen.woodland Alliance name Pinus edulis - (Juniperus spp.) Woodland.Alliance.(A.516),. Two-needle.Pinyon.-.(Juniper.species).Woodland.Alliance Ecological systems placement: Ecological system unique ID CES304.767 Ecological system name Colorado.Plateau.Pinyon-Juniper.Woodland NatureServe conservation status: Global rank. G5 (23-Feb-1994). Distribution: Globally. This woodland association is known from mountains and mesas in the southern Colorado Plateau and Mogollon Rim of northern Arizona and extends into southern Utah and probably into western Colorado and possibly into western New Mexico. Petrified Forest National Park. Pinus edulis - (Juniperus osteosperma) / Bouteloua gracilis Woodland occurred on one relevé. It was located on a terrace north of Petrified National Forest on the Navajo Nation. Environmental summary: Globally. This woodland association is known from mountains and mesas in the southern Colorado Plateau, from the Mogollon Rim, extending north into southern Utah and probably western Colorado. Elevations normally range from 1700-2400 m (5575-7875 ft). Sites are variable but generally are relatively dry and rocky. Stands occur on flat to moderate slopes along drainages and on mesatops, on gentle to moderate (10-40%) rocky slopes of foothills, and at the bases of cinder cones. The substrates are variable and range from to deep, coarse-textured soils derived from cinder, to sandy loams derived from sandstone or fine-textured soils derived from limestone or shale. Petrified Forest National Park. This association occurs at an elevation of 1840 m (6030 ft) with a moderate slope of 7%. The relevé has mudstone surface rocks. USFWS wetland system: Not applicable. C9
Vegetation Classification and Distribution Mapping Report: Petrified Forest National Park Vegetation description: Globally. This plant association is characterized by an open to moderately dense tree canopy (10-65% cover) codominated by Pinus edulis and Juniperus osteosperma trees that are between 1 and 5 m tall. Pinus edulis may be present with relatively small cover in some stands. Juniperus deppeana may replace Juniperus osteosperma in southern stands. Other species of Juniperus, such as Juniperus scopulorum, may be present in higher elevation stands. Shrub cover is sparse (
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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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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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