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Name
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Reference
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Plots↓
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Description |
Comm #401
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SINGLE-LEAF PINYON - (JUNIPER SPECIES) WOODLAND ALLIANCE
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accession code: VB.cc.30266.SINGLELEAFPINYO
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NVC 2004 |
46
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Comm #402
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Vaccinium myrtilloides / Pteridium aquilinum / Polytrichum spp. Shrubland
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accession code: VB.CC.37499.CEGL006596
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46
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This successional shrubland occurs on temporarily flooded or saturated acidic soils in the Allegheny Mountains region of West Virginia, at elevations between 770 and 1220 m. It is a small-patch type that occupies flat to mildly inclined (0- to 5-degree) slopes in headwater basins. It occupies slightly drier positions in open wetland mosaics, either on the margins of the wetland, as drier lenses in the middle of the wetland, or interfingering with wetter shrub swamps or herbaceous wetlands in an irregular pattern related to moisture availability. This community is part of the natural disturbance mosaic of beaver-influenced vegetation types at high elevations in the Alleghenies, and also occurs on formerly forested wetlands that were logged or burned within the last 120 years. Hummock-and-hollow microtopography is moderately developed, with moss-covered hummocks formed over woody stem clusters, decayed wood, and roots. Soil texture is moderately poorly to very poorly drained silt loam or clay loam, with peat developing in some older stands. Mean soil pH is 3.7 (n=9). The tall-shrub layer typically includes <i>Vaccinium myrtilloides</i> and <i>Viburnum nudum var. cassinoides</i>. Less common species in the tall-shrub layer include <i>Hypericum densiflorum, Picea rubens, Populus tremuloides, Amelanchier</i> spp., <i>Prunus serotina var. serotina, Viburnum recognitum, Acer rubrum</i>, and <i>Abies balsamea</i>. The short-shrub stratum is fairly dense and strongly dominated by <i>Vaccinium myrtilloides, Photinia melanocarpa</i>, and <i>Hypericum densiflorum</i>. The dwarf-shrub species <i>Rubus hispidus</i> has high cover and constancy in this type. The herbaceous layer typically includes a component of acidophilic upland species. Species with high cover and constancy are <i>Pteridium aquilinum, Solidago uliginosa</i>, and <i>Danthonia compressa</i>. Herbaceous species with high constancy but lower cover include <i>Lycopodium obscurum, Juncus effusus</i>, and <i>Carex debilis</i>. Species with lower constancy that are sometimes abundant include <i>Gaultheria procumbens, Eriophorum virginicum, Carex folliculata, Brachyelytrum erectum, Solidago rugosa, Apocynum androsaemifolium</i>, and <i>Lycopodium clavatum</i>. The nonvascular stratum is dominated by <i>Polytrichum</i> spp. (<i>Polytrichum juniperinum, Polytrichum commune, Polytrichum strictum, Polytrichum pallidisetum</i>) and often includes moderate cover by <i>Sphagnum</i> spp. (<i>Sphagnum fallax, Sphagnum girgensohnii, Sphagnum rubellum</i>). <i>Cladonia</i> spp. are often present with low cover. Indicator species that help to distinguish this community from others within the shrubland physiognomy for high-elevation wetlands of the Allegheny Mountains region are <i>Danthonia compressa, Polytrichum</i> spp., and <i>Pteridium aquilinum</i>. Mean species richness of all vascular plants and any nonvascular plants with cover >1% is 22 taxa per 400 square meters. |
Comm #403
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Festuca arizonica Herbaceous Alliance
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accession code: VB.cc.30685.FESTUCAARIZONIC
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NVC 2004 |
46
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Comm #404
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Aristida purpurea Herbaceous Alliance
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accession code: VB.cc.30612.ARISTIDAPURPURE
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NVC 2004 |
46
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Comm #405
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ARTEMISIA ARBUSCULA SSP. LONGILOBA DWARF-SHRUBLAND ALLIANCE
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accession code: VB.cc.29842.ARTEMISIAARBUSC
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NVC 2004 |
46
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Comm #406
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POPULUS FREMONTII SEASONALLY FLOODED FOREST ALLIANCE
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accession code: VB.cc.30201.POPULUSFREMONTI
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NVC 2004 |
46
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Comm #407
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Subalpine Fir Woodland Alliance
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accession code: VB.cc.30299.SUBALPINEFIRWOO
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NVC 2004 |
46
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Comm #408
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Pinus palustris / Quercus laevis - Quercus incana / Gaylussacia dumosa / Aristida stricta Woodland
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accession code: urn:lsid:vegbank.org:commConcept:32464-{6A6432E4-FC83-42C3-BD37-CECD558075D3}
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NatureServe Biotics 2019 |
46
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This association is found on fine sandy to loamy soils in the Outer Coastal Plain of North Carolina. <i>Pinus palustris</i> dominates the open canopy and other characteristic species include <i>Quercus laevis</i> and <i>Quercus incana</i> in the subcanopy/shrub layer, <i>Gaylussacia dumosa</i> and <i>Vaccinium tenellum</i> in the shrub layer, and <i>Aristida stricta</i> in the herb layer. |
Comm #409
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Typha angustifolia - Hibiscus moscheutos Salt Marsh
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accession code: urn:lsid:vegbank.org:commConcept:33043-{B03C2A0E-87E8-4511-94A1-5E6570C9300B}
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NatureServe Biotics 2019 |
46
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This community is a brackish tidal marsh of the northern to central Atlantic coast, occurring along the margin of tidal rivers and at the upper margins of some high salt marshes and coastal salt ponds where water salinity ranges from 0.5-18.0 ppt. Brackish marshes are most extensive on large tidal rivers, but smaller marshes of this alliance also occur at the upper limits of larger tidal creeks. The vegetation of this tall grassland is a mixture of freshwater and saltmarsh species dominated by <i>Typha angustifolia</i>. <i>Phragmites australis</i> and/or <i>Typha latifolia</i> can be codominant. The <i>Phragmites australis</i> component is the native strain. Common associates include <i>Hibiscus moscheutos, Schoenoplectus pungens, Impatiens capensis, Amaranthus cannabinus, Peltandra virginica, Pontederia cordata</i>, and <i>Bidens</i> spp., plus <i>Spartina cynosuroides</i> in the south. Other infrequent associates include <i>Mikania scandens, Polygonum punctatum, Pluchea odorata, Eleocharis</i> spp., and <i>Bolboschoenus robustus</i>, plus <i>Schoenoplectus americanus</i> farther south. Species from adjacent high salt marsh may also be present. Substrate is muck or peat, and there is often an accumulation of <i>Typha</i> litter. |
Comm #410
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Saxifraga michauxii - Carex misera - Danthonia spicata - Krigia montana Grassland
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accession code: urn:lsid:vegbank.org:commConcept:33112-{9B03E615-6E54-4FA6-8EBE-40C070CFA253}
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NatureServe Biotics 2019 |
46
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This association consists of rock outcrops with sparse vegetative cover of forbs, grasses and shrubs which are rooted in rock fissures. This vegetation occurs in the Southern Appalachians of Tennessee and North Carolina at 1350-1870 m elevation within a matrix of <i>Quercus rubra</i> forest or high-elevation grasslands and shrublands. Typical species include <i>Saxifraga michauxii, Danthonia spicata, Krigia montana, Carex misera, Angelica triquinata, Athyrium filix-femina ssp. asplenioides, Rhododendron catawbiense</i>, and <i>Heuchera villosa</i>. Other characteristic species are <i>Sanguisorba canadensis, Sibbaldiopsis tridentata, Hylotelephium telephioides, Houstonia purpurea var. montana, Geum radiatum, Solidago spithamaea</i>, and <i>Huperzia appalachiana</i>. |
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