Vegetation Classification and Mapping Project Report - USGS

More documents

Recommendations

Info

Appendix C: Global and local plant community descriptions C.3 Shrubland C.3.19. Tamarix spp. Temporarily Flooded Semi-natural Shrubland Base map class NatureServe common name NatureServe code Tamarisk.Shrubland Salt-cedar.species.Temporarily.Flooded.Semi-natural. Shrubland CEGL003114 Summary: This broadly defined association is composed of shrublands which form moderately dense to dense thickets on banks of larger streams across the western Great Plains, interior and southwestern U.S., and northern Mexico. Stands are dominated by introduced species of Tamarix, including Tamarix ramosissima, Tamarix chinensis, Tamarix gallica, and Tamarix parviflora. Tamarix spp. were introduced from the Mediterranean and have become naturalized in various sites, including salt flats and other saline habitats, springs, and especially along streams and regulated rivers, where it replaces the native vegetation, such as shrublands dominated by species of Salix or Prosopis or woodlands of Populus spp. A remnant herbaceous layer may be present, depending on the age and density of the shrub layer, although in many cases this layer also consists of aggressive exotic species such as Lepidium latifolium. Tamarix species have become a critical nuisance along most large rivers in the semi-arid West and, because of permanent changes in flood regimes and the diffculty of removing trees, reflect irreversibly changed vegetation on many sites. Classification confidence: 1 - Strong. Classification comments: Globally. This is a broadly defined plant association that is composed of many diverse Tamarix spp.-dominated vegetation communities from a wide variety of environments. Muldavin et al. (2000a) described 8 community types that will be reviewed as possible USNVC associations. Petrified Forest National Park. This association was dominated by the non-native invasive species Tamarix spp. These species are currently invading southwestern riparian systems. This map class should be re-evaluated regularly to assess changes in the distribution of this community type. Although this map class only occurred in a few polygons, this does not mean that Tamarix spp. do not occur in other locations in the project area. The association was only mapped in areas larger than the minimum mapping unit and in areas where Tamarix spp. dominated the species cover. During the classification field work, this species was identified as Tamarix chinensis; however, since the taxonomy of this species is not well-known and appropriate keys have not been developed to identify it, we used only the genus level to classify these relevés into an association. Vegetation hierarchy: Physiognomic class III Shrubland Physiognomic subclass III.A. Evergreen.shrubland Physiognomic group III.A.4. Microphyllous.evergreen.shrubland Physiognomic subgroup III.A.4.N. Natural/Semi-natural.microphyllous.evergreen.shrubland Formation name III.A.4.N.c. Temporarily.flooded.microphyllous.shrubland Alliance name Tamarix.spp..Semi-Natural.Temporarily.Flooded. Shrubland.Alliance.(A.842),.Salt-cedar.species.Seminatural.Temporarily.Flooded.Shrubland.Alliance C61
Vegetation Classification and Distribution Mapping Report: Petrified Forest National Park Ecological systems placement: Ecological system unique ID CES306.821 CES306.821 Ecological system name Rocky.Mountain.Lower.Montane-Foothill.Riparian.Woodland. and.Shrubland Rocky.Mountain.Lower.Montane-Foothill.Riparian.Woodland. and.Shrubland NatureServe conservation status: Global rank. GNA (invasive) (24-Jul-2001). Distribution: Globally. This semi-natural shrubland is found along drainages in the semi-arid western Great Plains, interior and southwestern U.S. and northern Mexico, from central and eastern Montana, south to Colorado, western Oklahoma and Texas, west to California. Petrified Forest National Park. Tamarix spp. Semi-natural Temporarily Flooded Shrubland was identified from two relevés in Petrified Forest National Park. These relevés occurred on bajada and talus landforms in the central neck area of the park along the northern edges of the Puerco River, both east and west of the park road. Environmental summary: Globally. These widespread shrublands are common along larger streams, rivers, and around playas in the western U.S. and Mexico. Elevation ranges from 75 m below sea level to 1860 m. Tamarix spp. have become naturalized in various sites including riverbanks, floodplains, basins, sandbars, side channels, springs, salt flats, and other saline habitats. Stands grow especially well along regulated rivers where flood-regenerated native species such as Populus are declining and the absence of regular scouring floods allows Tamarix seedlings to become established. Substrates are commonly thin sandy loam soil over alluvial deposits of sand, gravel, or cobbles. Petrified Forest National Park. This association occurred at 1625 and 1639 m (5330-5377 ft) elevation. Slope ranged from none to low (0-4%). Both of these relevés occurred in areas with intermittent or seasonal flooding. USFWS wetland system: Palustrine. Vegetation description: Globally. This semi-natural shrubland occurs along streams, rivers, and playas where it forms a moderate to dense tall-shrub layer that is solely or strongly dominated by species of Tamarix, including Tamarix ramosissima, Tamarix chinensis, Tamarix gallica, and Tamarix parviflora. Other shrubs may include species of Salix (especially Salix exigua) and Prosopis, Rhus trilobata, and Sarcobatus vermiculatus but with low cover (if shrub species are codominant, then the stand is classified as a natural shrubland). Scattered Acer negundo, Salix amygdaloides, Populus spp., or Elaeagnus angustifolia trees may also be present. Depending on stand age and density of the shrub layer, an herbaceous layer may be present. Associated native species include Distichlis spicata and Sporobolus airoides, and introduced species include Agrostis gigantea, Agrostis stolonifera, and Poa pratensis. Introduced herbaceous species such as Polypogon monspeliensis, Conyza canadensis, Lepidium latifolium, and others have been reported from shrublands in this association. C62
Page 1 and 2:
National Park Service U.S. Departme
Page 3 and 4:
Vegetation Classification and Distr
Page 5 and 6:
The National Park Service, Natural
Page 7 and 8:
Page 10 and 11:
Acronyms and Abbreviations AA ac AP
Page 12 and 13:
Executive Summary The classificatio
Page 14:
Acknowledgments Behind the authors
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Axis 3 Axis 2 Vegetation Classifica
Page 33 and 34:
Page 35 and 36:
20 Table 5. continued Plant communi
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
40 Table 13. Base map class summary
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
46 Table 16. Summary statistics for
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
56 Table 22. Summary statistics for
Page 73 and 74:
Page 75 and 76:
Literature Cited ties: Terrestrial
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
B2 Appendix B Plant Community 2003
Page 91 and 92:
B4 Appendix B .continued Plant Comm
Page 93 and 94:
Page 96 and 97:
Appendix C: Global and local plant
Page 98 and 99:
Page 100 and 101:
Page 102 and 103: Appendix C: Global and local plant
Page 194 and 195: Appendix C: Global and Local Plant
Page 202 and 203:
Appendix C: Global and Local Plant
Page 204 and 205:
Page 206 and 207:
Page 208 and 209:
Appendix D Plant species list The s
Page 210 and 211:
D3 Appendix D continued Scientific
Page 212 and 213:
Page 214 and 215:
Page 216 and 217:
Page 218 and 219:
Appendix E Plant community and map
Page 220 and 221:
Appendix E: Plant community and map
Page 222 and 223:
Page 224 and 225:
Page 226 and 227:
Page 228 and 229:
Page 230 and 231:
Appendix F Plant community and map
Page 232 and 233:
F3 Appendix F continued Plant commu
Page 234:
Appendix F continued Plant communit
Page 237 and 238:
Page 239 and 240:
G4 B1 Cottonwood / Rubber Rabbitbru
Page 241 and 242:
G6 B3 Blue Sage Dwarf-Shrubland Fig
Page 243 and 244:
G8 B5 Copperweed - Alkali Sacaton S
Page 245 and 246:
G10 B7 Drummond Goldenweed - Gallet
Page 247 and 248:
G12 B9 Greasewood / New Mexico Salt
Page 249 and 250:
G14 B11 Iodine Bush Shrubland Figur
Page 251 and 252:
G16 B13 Sandsage Colorado Plateau S
Page 253 and 254:
G18 B15 Tamarisk Shrubland Figure.G
Page 255 and 256:
G20 B17 Winter-fat / Blue Grama Dwa
Page 257 and 258:
G22 B19 Alkali Sacaton - Blue Grama
Page 259 and 260:
G24 B21 Blue Grama Herbaceous Veget
Page 261 and 262:
G26 B23 Galleta - Alkali Sacaton He
Page 263 and 264:
G28 B25 New Mexico Saltbush / Alkal
Page 265 and 266:
G30 B27 Russian Thistle Sand Dune V
Page 267 and 268:
G32 B29 Arizona Siltbush Sparse Veg
Page 269 and 270:
G34 B31 Slender Buckwheat Sparse Ve
Page 271 and 272:
G36 B33 Airstrip Figure.G65..Photos
Page 273 and 274:
G38 B35 Barren Wash Figure.G68..Gro
Page 275 and 276:
G40 B37 Park Sites Figure.G71..Phot
Page 277 and 278:
G42 B39 Residences Figure.G73..Phot
Page 279 and 280:
G44 B41 Run-off Control Feature Fig
Page 281 and 282:
G46 B43 Stock Ponds Figure.G77..Pho
Page 283 and 284:
G48 B45 Vegetated Wash Complex Figu
Page 286 and 287:
Appendix H: Accuracy Assessment Dat
Page 288 and 289:
Page 290 and 291:
Page 292 and 293:
Table H-4. Contingency table: Manag
Page 294 and 295:
The Department of the Interior prot
show all

Vegetation Classification and Mapping Project Report - USGS

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?