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Reference
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Description |
Comm #5631
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Opuntia imbricata Shrubland Alliance
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accession code: VB.CC.28458.OPUNTIAIMBRICAT
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Southeastern Ecology Working Gro... |
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This alliance consists of cactus-dominated shrublands, moderately to densely dominated by Opuntia imbricata, resulting from overgrazing of natural grasslands. It occurs particularly in slightly moister settings along broad swales. Infestation of Opuntia imbricata is variable, and cover of Opuntia in this type ranges from 25% to nearly 100%. Grass cover and composition is highly variable, depending on site and grazing regime and history. Associations in this alliance grade to grassland (often with some Opuntia cover) or to other grazing-induced shrubland communities, such as those dominated by Prosopis, Acacia, and/or Mimosa. |
Comm #5632
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Schizachyrium scoparium - Bouteloua curtipendula - Nassella leucotricha Herbaceous Vegetation
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accession code: VB.CC.33365.CEGL004070
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Southeastern Ecology Working Gro... |
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This association is a prairie grassland of the Southern Great Plains of the United States, specifically in Texas. Its range extends south into the Edwards Plateau. Stands of this type would be dominated by <i>Schizachyrium scoparium</i> and <i>Bouteloua curtipendula</i>, with <i>Nassella leucotricha</i> as a characteristic species. |
Comm #5633
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Phleum alpinum - Carex microptera Herbaceous Vegetation
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accession code: VB.CC.31459.CEGL001922
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Mattson, D. J. 1984. Classificat... |
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This herbaceous vegetation type has been described from wetlands on the Yellowstone Plateau of northwestern Wyoming. It occupies mesic, fine- to coarse-textured, mineral soils on flats and low ridges. The herbaceous vegetation may contain a variety of graminoids and forbs. <i>Carex microptera, Phleum alpinum, Deschampsia caespitosa, Trisetum wolfii</i>, and <i>Symphyotrichum foliaceum</i> are always present, and a number of other species may be abundant, including <i>Antennaria corymbosa, Potentilla diversifolia</i>, and <i>Epilobium ciliatum ssp. glandulosum</i>. |
Comm #5634
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Najas guadalupensis - Ceratophyllum demersum - Utricularia inflata Herbaceous Vegetation
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accession code: VB.CC.20134.NAJASGUADALUPEN
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Southeastern Ecology Working Gro... |
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This vegetation type consists of aquatic vegetation in rivers and streams of southern Florida, dominated by various mixtures of Najas guadalupensis, Ceratophyllum demersum, and Utricularia inflata. This description may need modification as more information becomes available. |
Comm #5635
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Schizachyrium scoparium - Saxifraga michauxii - Coreopsis major Herbaceous Vegetation
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accession code: VB.CC.33368.CEGL004074
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Southeastern Ecology Working Gro... |
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This association covers high-elevation rocky summits in the Southern Appalachians occurring at elevations of from 1260 to 1715 m (4125-5625 feet) on outcrops of mafic rock or on felsic rock where perennial seepage exists. Vegetative cover is sparse and consists of graminoids, forbs, and shrubs which are rooted in rock fissures. Typical species include <i>Saxifraga michauxii, Coreopsis major, Schizachyrium scoparium, Kalmia latifolia, Dichanthelium acuminatum, Danthonia spicata</i>, and <i>Paronychia argyrocoma</i>. This community is surrounded by deciduous forests dominated by <i>Quercus rubra, Acer rubrum var. rubrum</i>, and occasionally <i>Tsuga caroliniana</i>. Other characteristic species include <i>Campanula divaricata, Solidago bicolor</i>, and <i>Allium allegheniense</i>. |
Comm #5636
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Schizachyrium scoparium - Sporobolus compositus var. compositus - Rudbeckia fulgida var. fulgida Wooded Herbaceous Vegetation
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accession code: VB.CC.35043.CEGL004078
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Southeastern Ecology Working Gro... |
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This community occurs on ledges of Mississippian limestone in the Southern Cliff Section of Kentucky (222Eo). Dominant species include <i>Schizachyrium scoparium, Sporobolus compositus var. compositus, Sporobolus clandestinus, Danthonia spicata, Carex eburnea, Liatris squarrulosa, Rudbeckia fulgida var. fulgida (= Rudbeckia truncata), Symphyotrichum oblongifolium (= Aster oblongifolius), Hedyotis nigricans</i>, and <i>Manfreda virginica</i>. Other frequent species include <i>Panicum flexile, Scleria triglomerata, Minuartia patula, Hypericum dolabriforme, Euphorbia corollata, Lespedeza</i> spp., <i>Galactia</i> spp., <i>Lithospermum canescens, Solidago sphacelata, Helianthus hirsutus, Verbesina virginica var. virginica, Silphium trifoliatum, Aquilegia canadensis, Euphorbia commutata</i>, and <i>Blephilia ciliata</i>. This community is associated with <i>Quercus muehlenbergii - Quercus</i> spp. forest in which the subcanopy may be dominated by <i>Juniperus virginiana</i> (this being regarded as a symptom of fire suppression). See ~<i>Quercus muehlenbergii - Quercus (falcata, shumardii, stellata) / Cercis canadensis / Viburnum rufidulum</i> Forest (CEGL007699)$$ in ~<i>Quercus muehlenbergii - Acer saccharum - Fraxinus americana</i> Forest Alliance (A2060)$$. It should be compared to limestone glades of Lee County, Virginia (Ludwig 1999). |
Comm #5637
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Acacia greggii - Parkinsonia microphylla Shrubland
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accession code: VB.CC.25736.ACACIAGREGGIIPA
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Western Ecology Working Group of... |
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Comm #5638
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Populus balsamifera ssp. trichocarpa - Pinus jeffreyi Forest
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accession code: VB.CC.27212.POPULUSBALSAMIF
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Western Ecology Working Group of... |
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Comm #5639
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Tsuga heterophylla / Oplopanax horridus - Gymnocarpium dryopteris Forest
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accession code: VB.CC.23820.TSUGAHETEROPHYL
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Western Ecology Working Group of... |
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Comm #5640
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II.A.2.C.a
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accession code: VB.CC.691.IIA2CA
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EcoArt 2002 |
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