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Name
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Reference
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Plots↓
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Description |
Comm #7041
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Lilaeopsis occidentalis Herbaceous Vegetation
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accession code: VB.CC.33052.CEGL003329
NOT CURRENTLY ACCEPTED
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Western Ecology Working Group of... |
0
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From Kunze (1994): This community type appears limited to the Columbia River surge plain downriver from Longview, Washington. It occurs in protected areas on muds. It is an emergent community type subject to daily freshwater tidal inundation and is characterized by the codominance of <i>Lilaeopsis occidentalis </i>and <i>Tillaea </i><i>aquatica</i>. Other taxa include <i>Callitriche </i>spp., <i>Elatine </i>spp., <i>Eleocharis acicularis, Eleocharis palustris</i>, and <i>Limosella aquatica</i>. |
Comm #7042
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Artemisia cana (ssp. bolanderi, ssp. viscidula) / Leymus cinereus Shrubland
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accession code: VB.CC.25796.ARTEMISIACANASS
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Western Ecology Working Group of... |
0
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This association occurs in a semi-arid region of varied topography. Average annual precipitation is between 20-40 cm, with somewhat more at the higher elevations. Occurs in perennially moist, semi-alkaline, pluvial lakebeds above 3500 feet or montane meadows to 6500 feet. Only a few forb species occur, typically in moist microsites. These include species of Astragalus, Orthocarpus and Rorippa. Bare ground is extensive. Artemisia cana and Leymus cinereus are diagnostic species. The 1- to 2-m tall Artemisia cana is moderately to widely spaced in the canopy. The herbaceous layer is dominated by the widely spaced 2-m tall bunchgrass Leymus cinereus. |
Comm #7043
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Juniperus osteosperma / Artemisia arbuscula Woodland
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accession code: VB.CC.19910.JUNIPERUSOSTEOS
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Western Ecology Working Group of... |
0
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Comm #7044
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Quercus wislizeni - Quercus chrysolepis Woodland
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accession code: VB.CC.19958.QUERCUSWISLIZEN
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Western Ecology Working Group of... |
0
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Comm #7045
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Juniperus monosperma / Bouteloua eriopoda Woodland
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accession code: VB.CC.25766.JUNIPERUSMONOSP
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Western Ecology Working Group of... |
0
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Comm #7046
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Carex obnupta - Argentina egedii ssp. egedii Herbaceous Vegetation
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accession code: VB.CC.23068.CAREXOBNUPTAARG
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Western Ecology Working Group of... |
0
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Comm #7047
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CEGL004244
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accession code: VB.CC.5895.CEGL004244
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7048
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CEGL004245
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accession code: VB.CC.5896.CEGL004245
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7049
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Tiquilia latior / Sporobolus airoides Dwarf-shrubland
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accession code: VB.CC.32395.CEGL005809
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Western Ecology Working Group of... |
0
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This dwarf-shrubland association is currently only known from Wupatki National Monument in Arizona, and the following description is based on occurrences there. Additional information will be added as it becomes available. This association is found at an elevation of 1300 m (4265 feet) with no slope. The substrate consists of red sand, black cinders, and relict Pleistocene river cobbles. Total vegetation cover is 22% with 16% in the shrub layer and 5% in the ground layer. Species diversity consists of 8 species. The dwarf-shrub layer is dominated by <i>Tiquilia latior</i>, and the herbaceous layer is dominated by <i>Sporobolus airoides</i>. |
Comm #7050
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Ludwigia palustris - Polygonum hydropiperoides Herbaceous Vegetation
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accession code: VB.CC.33586.CEGL003330
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Western Ecology Working Group of... |
0
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From Christy (2004): Habitat of this herbaceous vegetation of Oregon and Washington is seasonally flooded eutrophic lakes, ponds, and sloughs at low elevations (3-152 m [10-500 feet]). This association forms extensive stands in shallow seasonal lakes and ponds on floodplains and deflation plains, subject to drying in summer. Soils are seasonally flooded to moist mostly silt loam, some organic. It is more common in interior valleys on <i>Fraxinus latifolia</i> floodplains but occurs sporadically along the coast. <i>Salix lucida ssp. lasiandra</i> is the only tree or shrub present, but it has low constancy and cover because of extensive seasonal ponding. <i>Polygonum hydropiperoides</i> is the primary species with an average cover of 57% and ranges to 99%. It is not always present, and when absent the associated <i>Ludwigia palustris</i> is conspicuous. <i>Ludwigia</i> has a constancy of 63%, an average cover of 34%, and may range to 90%. Eighteen other species in the herb layer occur at low constancy and cover, except for significant patches of <i>Bidens cernua, Sagittaria latifolia</i>, or <i>Leersia oryzoides</i>. <i>Phalaris arundinacea</i> may also form patches but is inhibited by seasonal ponding. The association tolerates eutrophic conditions and flashy hydroperiods associated with urban and agricultural landscapes. |
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