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Name
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Reference
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Plots↓
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Description |
Comm #5061
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CEGL003086
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accession code: VB.CC.5295.CEGL003086
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EcoArt 2002 |
0
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Comm #5062
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Platanus occidentalis - Betula nigra - Salix (caroliniana, nigra) Woodland
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accession code: VB.CC.30991.CEGL003896
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Eastern Ecology Working Group of... |
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This early-successional woodland community of coarse-textured (cobbly / bouldery) to fine-textured (silty or muddy) depositional bars and islands occurs along rivers and large streams in the High Allegheny Plateau, Central Appalachians, and Lower New England ecoregions. It is subject to relatively frequent and powerful flooding and ice-scouring and has a highly variable physiognomy. It is dominated by stunted, usually battered and flood-trained trees (varying from less than 5 m tall to >10 m tall) of <i>Platanus occidentalis</i> and <i>Betula nigra</i>. <i>Salix caroliniana</i> and <i>Salix nigra</i> are dominant or codominant in a minority of stands. Other floodplain trees, particularly <i>Acer saccharinum </i>and <i>Fraxinus pennsylvanica</i>, may occur as minor associates. Shrub associates include <i>Cornus amomum, Salix sericea, Alnus serrulata</i>, and sometimes <i>Cephalanthus occidentalis</i> or <i>Physocarpus opulifolius</i>. The herbaceous layer ranges from sparse to moderately dense. Characteristic herbs include <i>Apocynum cannabinum, Polygonum virginianum, Polygonum hydropiper, Polygonum pensylvanicum, Polygonum hydropiperoides, Polygonum sagittatum, Polygonum pensylvanicum, Eupatorium serotinum, Asclepias incarnata, Pilea pumila, Hypericum</i> spp., <i>Bidens</i> spp., <i>Phalaris arundinacea, Dichanthelium clandestinum, Leersia virginica, Panicum virgatum</i>, and <i>Justicia americana</i>. Vines such as <i>Vitis riparia</i> and <i>Toxicodendron radicans</i> are often found throughout this association. Exotics such as <i>Lythrum salicaria, Microstegium vimineum, Polygonum cuspidatum, Coronilla varia</i>, and <i>Rosa multiflora</i> are frequent invaders. |
Comm #5063
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CEGL002190
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accession code: VB.CC.4712.CEGL002190
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #5064
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Artemisia tridentata ssp. vaseyana / Leucopoa kingii Shrubland
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accession code: VB.CC.34361.CEGL001025
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Western Ecology Working Group of... |
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This shrubland is found either in patches or continuously on gentle to steep slopes of various aspects between 2392 to 2895 m (7840-9500 feet) elevation in southern Idaho, Wyoming, and north-central Colorado. Soils are of a sedimentary substrate. The moderately open shrub layer is dominated by <i>Artemisia tridentata ssp. vaseyana</i>. <i>Chrysothamnus viscidiflorus, Purshia tridentata, Symphoricarpos oreophilus</i>, and several other shrubs may also be present. Occasionally, <i>Pinus flexilis</i> is sparsely scattered throughout stands. The herbaceous understory is dominated by <i>Leucopoa kingii</i>. Other grasses present are <i>Festuca idahoensis, Koeleria macrantha</i>, and <i>Poa secunda</i>. Common forbs include <i>Achillea millefolium, Balsamorhiza sagittata, Eriogonum heracleoides, Lupinus argenteus</i>, and <i>Phlox longifolia</i>. |
Comm #5065
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Deschampsia caespitosa - Artemisia lindleyana Herbaceous Vegetation
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accession code: VB.CC.21678.DESCHAMPSIACAES
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Western Ecology Working Group of... |
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This association is found only along the shores of the Columbia River in Washington (and very rarely in Oregon) in the western Cascades. It occurs on silty portions of gravel and cobble bars that are seasonally flooded. The association is a codominance of the grass Deschampsia caespitosa and the forb Artemisia lindleyana; the total herbaceous cover is open to semi-open. A foliose lichen, Dermatocarpon sp., covers much of the exposed cobble or gravel. |
Comm #5066
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A.924
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accession code: VB.CC.2549.A924
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Shrublands included in this alliance have been described in south-central New Mexico, but the alliance is likely to occur in southeastern Arizona, Trans-Pecos Texas and adjacent Mexico. ~Robinia neomexicana$ is considered a semi-riparian species by some researchers. Thickets occur along drainages in canyons at lower elevations (1500-2000 m). On upland sites it is restricted to cooler north aspects at lower montane elevations, but may occur on any aspects at higher montane elevations. Sites are nearly level to moderately steep slopes. Substrate ranges from alluvial deposits on stream terraces to colluvial slopes. Stands have a dense to moderately dense woody layer to 5 m tall that is dominated by the deciduous shrub ~Robinia neomexicana$. ~Quercus gambelii$ may be present but does not codominate. The understory may be dominated by mesic forbs like ~Thalictrum fendleri$, but little other information is available. Stands in the montane conifer zone are considered seral and may have seedlings of ~Pinus ponderosa, Abies concolor$ or conifer species that are colonizing the stand. |
Comm #5067
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Betula occidentalis Shrubland
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accession code: VB.CC.33938.CEGL001080
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Western Ecology Working Group of... |
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This shrubland occurs on stream benches and floodplains in narrow to moderately wide valleys and hillside seeps in mountains, canyons, foothills, and sheltered alcoves across much of the western U.S. Surface water is present for extended periods during the growing season. The water table, after flooding ceases, is variable, extending from saturated to well below the ground surface, but the roots of <i>Betula occidentalis</i> are always in saturated soil. Substrates are typically alluvial and range from fairly shallow, finer-textured soils to gravel and boulders. Soils usually have signs of saturation (mottles). The vegetation is characterized by a nearly continuous tall-shrub to small-tree canopy dominated by <i>Betula occidentalis</i> along the streambank. Other shrub species include <i>Alnus incana, Cornus sericea, Dasiphora fruticosa ssp. floribunda (= Pentaphylloides floribunda), Salix</i> spp., <i>Amelanchier utahensis, Rhus trilobata, Shepherdia argentea</i>, and <i>Prunus virginiana</i>. Along narrow valleys at higher elevations, conifers may overhang the stream edge. Herbaceous undergrowth can be limited because of the dense shrub canopy. However, if the shrub canopy is open and the stand is on relatively well-drained yet mesic site (for example, elevated river benches), the herbaceous layer can be abundant. It is often a diverse mixture of grasses and forbs that is dominated by disturbance-induced species, including most commonly <i>Agrostis stolonifera, </i><i>Cirsium arvense</i><i>, </i><i>Phleum pratense</i>, and <i>Poa pratensis</i>. Forb species include <i>Maianthemum stellatum, </i><i>Heracleum sphondylium</i><i>, Thalictrum fendleri</i>, and <i>Rudbeckia laciniata</i>. Graminoid cover is highly variable and can include <i>Carex utriculata, Carex pellita (= Carex lanuginosa), Carex microptera, Carex nebrascensis, Glyceria</i> spp., <i>Juncus balticus</i>, and introduced hay grasses. Diagnostic of this association is the <i>Betula occidentalis</i>-dominated tall-shrub layer and a variable, weedy, mixed herbaceous undergrowth that occurs on sites that are flooded for extended periods during the growing season. |
Comm #5068
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Platanus racemosa Temporarily Flooded Woodland [Placeholder]
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accession code: VB.CC.23418.PLATANUSRACEMOS
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Western Ecology Working Group of... |
0
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Comm #5069
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Spartina pectinata - Calamagrostis stricta - Carex spp. Herbaceous Vegetation
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accession code: VB.CC.19260.SPARTINAPECTINA
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Midwestern Ecology Working Group... |
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This prairie cordgrass wet prairie community occurs in the northern tallgrass prairie region of the United States and Canada. Stands occur in many shallow pond basins and lakes, as well as on terraces and floodplains of streams and rivers. The soils are deep, typically poorly drained, with clay or silty loam upper horizons that have a characteristic gley layer. The community is subject to seasonal inundation. The vegetation is dominated by fine-textured grasses, low sedges, and rushes, with a mixture of forbs. The most common species are Symphyotrichum lanceolatum var. lanceolatum (= Aster lanceolatus var. lanceolatus), Boltonia asteroides var. latisquama, Calamagrostis canadensis, Carex pellita (= Carex lanuginosa), Carex praegracilis, Carex sartwellii, Carex stricta, Poa palustris, and Spartina pectinata. Other species that are often present are Apocynum cannabinum, Juncus balticus, Liatris pycnostachya, Sonchus arvensis, Stachys palustris, and Teucrium canadense. |
Comm #5070
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Hawai'i Lowland Dry Forest
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accession code: urn:lsid:ecoobs.vegbank.org:commConcept:9052-{66F37AEF-1075-4F40-95D5-E68D0ECEEEF3}
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Comer et al. 2003 |
0
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