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Name
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Reference
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Plots↓
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Description |
Comm #7001
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Lemna minor Herbaceous Vegetation
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accession code: VB.CC.33906.CEGL003305
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Western Ecology Working Group of... |
0
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From Christy (2004): Habitat is seasonal to perennial pools, ponds, lakes, and sloughs, usually at lower elevations. This association forms bright green floating mats on the surface of the water, usually growing so dense that no open water is visible. <i>Lemna </i>needs open water to proliferate in winter and spring, but it tolerates being stranded on mudflats when ponds and pools dry out in summer. Other small floating species are common components of this association, particularly <i>Spirodela polyrrhiza, Azolla, Wolffia</i>, and the aquatic liverworts <i>Ricciocarpos natans </i>and <i>Riccia fluitans</i>, but they are always subordinate to <i>Lemna. </i>All of these species can survive stranding on mud but cannot survive complete desiccation. It is not clear if this association is enhanced by eutrophic conditions caused by enriched runoff in agricultural or urban landscapes. |
Comm #7002
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Sophora chrysophylla Woodland Alliance
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accession code: VB.CC.26219.SOPHORACHRYSOPH
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Western Ecology Working Group of... |
0
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Comm #7003
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Picea engelmannii / Arnica cordifolia Forest
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accession code: VB.CC.26282.PICEAENGELMANNI
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Western Ecology Working Group of... |
0
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Comm #7004
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Abies lasiocarpa / Lathyrus lanszwertii var. leucanthus Forest
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accession code: VB.CC.27300.ABIESLASIOCARPA
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Western Ecology Working Group of... |
0
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Comm #7005
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CEGL007767
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accession code: VB.CC.7365.CEGL007767
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7006
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CEGL008057
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accession code: VB.CC.7592.CEGL008057
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7007
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Scirpus cyperinus Seasonally Flooded Herbaceous Vegetation
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accession code: VB.CC.24272.SCIRPUSCYPERINU
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Eastern Ecology Working Group of... |
0
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This seasonally flooded marsh occurs in the northeastern United States. It is dominated or characterized by Scirpus cyperinus, but composition is variable. Associates include Glyceria spp., Thelypteris palustris, as well as other species of Scirpus including Scirpus microcarpus (= Scirpus rubrotinctus) and Scirpus atrovirens. |
Comm #7008
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CEGL003021
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accession code: VB.CC.5232.CEGL003021
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EcoArt 2002 |
0
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Comm #7009
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Carex exsiccata Herbaceous Vegetation
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accession code: VB.CC.34501.CEGL003312
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Western Ecology Working Group of... |
0
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From Christy (2004): This herbaceous vegetation occupies small to large shallow basins on a variety of soil types, mostly seasonally flooded to perennially saturated organic, silt loam, or sand. This association is widely distributed in northwestern Oregon and Washington at elevations ranging from 30 to 1525 m (100-5000 feet). The association is present but uncommon at lower elevations along the coast and in interior valleys of western Oregon, and becomes more common at higher elevations in the Coast and Cascade Range. The composition is diverse with no obvious segregate types. Stands are usually flooded seasonally to a depth of 1-3 feet and may dry out by midsummer with the water table just below the soil surface. <i>Thuja plicata</i> and <i>Pseudotsuga menziesii</i> were recorded from plots but are peripheral or restricted to elevated microsites. Eleven different shrub species are reported, depending on elevation, but most occur in trace amounts except for <i>Spiraea douglasii, Vaccinium uliginosum</i>, and <i>Alnus incana</i>. Stands are usually nearly monotypic reed swamp of <i>Carex exsiccata</i> in standing water or bare mud, but sometimes it occurs with other species in wet lawns. Average cover of <i>Carex exsiccata</i> is 69%, with cover in some plots as much as 100%. More than 90 other species are present in the herb layer, the great diversity due mainly to the variety of elevations at which the association occurs. Most of the other species occur only in trace amounts. Those forming significant patches include <i>Veronica scutellata, Nuphar polysepala (= Nuphar lutea ssp. polysepala), Deschampsia caespitosa, Lysichiton americanus, Torreyochloa pallida var. pauciflora, Juncus patens</i>, and <i>Carex hystericina</i>. Some stands were no doubt grazed by livestock in the past, and elk and deer use may be high locally. |
Comm #7010
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CEGL001024
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accession code: VB.CC.3623.CEGL001024
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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