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Name
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Reference
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Plots↓
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Description |
Comm #12381
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Populus tremuloides - Betula papyrifera - (Acer rubrum, Fraxinus nigra) Forest
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accession code: VB.CC.36856.CEGL002467
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Midwestern Ecology Working Group... |
0
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This aspen - birch - maple forest is found in the hemi-boreal region of the upper midwestern United States and southern and central Canada. Sites are on level to rolling topography, and on upper slopes or plateaus or in valley bottoms. The substrate is derived from glacial outwash, lacustrine deposits, or moraines. The soil is typically deep, sandy loam to silty and well-drained to moist. This deciduous forest community has a moderately closed canopy usually dominated by <i>Populus tremuloides</i> and <i>Betula papyrifera</i>. <i>Acer rubrum</i> and <i>Populus grandidentata</i> may be absent to dominant. Other minor components of the overstory may include <i>Abies balsamea, Pinus resinosa, Pinus strobus, Picea glauca, Quercus rubra</i>, and <i>Tilia americana</i>. Wetter conditions are indicated by <i>Fraxinus nigra</i> and <i>Fraxinus pennsylvanica</i>. The shrub layer is approximately 2 m tall and often well-developed. The most abundant species are <i>Acer spicatum, Amelanchier</i> spp., <i>Corylus cornuta, Diervilla lonicera</i>, and <i>Rosa acicularis</i>. Other shrubs present include <i>Lonicera canadensis, Rubus pubescens, Vaccinium angustifolium</i>, and <i>Vaccinium myrtilloides</i>. The herbaceous layer tends to contain many species. Common species are <i>Aralia nudicaulis, Eurybia macrophylla (= Aster macrophyllus), Clintonia borealis, Maianthemum canadense, Trientalis borealis</i>, and <i>Viola</i> spp. |
Comm #12382
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Populus fremontii / Mesic Forbs Woodland
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accession code: VB.CC.31118.CEGL002470
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Western Ecology Working Group of... |
0
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This woodland association is documented along low-gradient perennial and intermittent streams, in mesic valley bottoms and below springs in southeastern Utah. Although these stands may not occur on sites that flood regularly, the water table is generally within a few feet of the surface through most of the growing season. Sites slope gently (less than 5%) and are located between 1530 and 1890 m (5020-6200 feet) elevation. Soils are typically somewhat poorly drained fine sands in these temporarily flooded sites and are derived from alluvium and colluvium. Total vegetation cover ranges from 50% to nearly 100% in these moist woodlands. The vegetation is characterized by an open to moderately closed canopy of <i>Populus fremontii</i> with between 26 and 50% cover. There is no developed shrub layer, although scattered shrubs such as <i>Rosa woodsii</i> and <i>Forestiera pubescens</i> and the exotic shrub <i>Tamarix chinensis</i> may be present. The herbaceous layer is diverse and provides up to 50% cover. The forb understory varies greatly from site to site and from year to year, depending on the timing of flooding and the height of the water table. Documented species with significant cover include <i>Iva acerosa, Maianthemum stellatum, Equisetum arvense</i>, and <i>Equisetum laevigatum</i>. Graminoids are low in cover and include <i>Juncus balticus, Phragmites australis</i>, and <i>Schoenoplectus americanus</i>. |
Comm #12383
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Ericameria nauseosa / Pleuraphis jamesii - (Hesperostipa comata) Shrub Herbaceous Vegetation
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accession code: VB.CC.33766.CEGL002996
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Western Ecology Working Group of... |
0
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This shrub herbaceous 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 occurs over a wide range of elevations from 1400-1680 m (4593-5512 feet) and slopes from 0-45%. All examples contain cinder soils with some of them also containing remnant basaltic lavaflow or a limestone component. Total vegetation cover ranges from 25-80% with most of that cover found in the herbaceous layer. The total species diversity ranges from 6-16 species within the 10 sampled plots. The shrub layer is dominated by <i>Ericameria nauseosa</i>. <i>Pleuraphis jamesii</i> is the dominant understory species. <i>Hesperostipa comata</i> is also a frequent but less dominant understory component. |
Comm #12384
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CEGL007445
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accession code: VB.CC.7130.CEGL007445
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EcoArt 2002 |
0
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Comm #12385
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CEGL003586
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accession code: VB.CC.5544.CEGL003586
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12386
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A.3517
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accession code: VB.CC.1991.A3517
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12387
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CEGL008472
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accession code: VB.CC.7795.CEGL008472
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EcoArt 2002 |
0
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Comm #12388
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CEGL002908
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accession code: VB.CC.5167.CEGL002908
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12389
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Salix lasiolepis / Rubus spp. Shrubland
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accession code: VB.CC.32168.CEGL003170
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Western Ecology Working Group of... |
0
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This shrubland association is currently only known from Point Reyes National Seashore in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. This association grows on the margins of low-gradient streams and on seasonally saturated draws and basins. Slopes are gentle and stands are found on all aspects. This vegetation is structurally variable; some stands are forests, others tall shrublands. <i>Salix lasiolepis</i> dominates the tree and tall-shrub layers. The upper canopy is less than 20 m in height and can be intermittent to continuous. <i>Rubus ursinus</i> and/or <i>Rubus discolor</i> may be present in the shrub layer. <i>Rubus</i> sp. may dominate the shrub canopy or contribute only minor coverage. Other shrubs present may include <i>Toxicodendron diversilobum, Baccharis pilularis</i>, and/or <i>Lonicera involucrata</i>. The herbaceous layer is open to intermittent. <i>Polystichum munitum, Scrophularia californica, Plantago lanceolata</i> (exotic), <i>Stachys ajugoides, Urtica dioica</i>, and/or <i>Erechtites minima</i> may be present. |
Comm #12390
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CEGL002526
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accession code: VB.CC.4946.CEGL002526
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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