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Reference
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Description |
Comm #6841
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Serie de Juglans boliviana - Podocarpus oleifolius
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accession code: urn:lsid:vegbank.org:commConcept:37069-{E8FFBE36-7C9F-4F16-BE79-A0D759E7B9E8}
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NatureServe Biotics 2019 |
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Mesotropical superior pluviestacional húmedo 1800-2300 m. Combinación florística diferencial: <i>Hedyosmum cf. racemosum, Juglans boliviana, Myrsine coriacea, Nectandra discolor, Oreopanax cf. reticulatus, Podocarpus oleifolius, Weinmannia microphylla, Weinmannia multijuga</i> y <i>Weinmannia sorbifolia</i>. Mayores áreas potenciales y/o actuales conocidas: Dept. Cochabamba, Yungas del Ichilo (Yungas de San Mateo). |
Comm #6842
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Acer spicatum - Thuja occidentalis - Betula papyrifera / Taxus canadensis Alkaline Cliff Scrub
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accession code: VB.CC.37129.CEGL005251
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Midwestern Ecology Working Group... |
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This boreal and Laurentian cliff forest is found in the eastern boreal regions and Laurentian regions of Canada and United States. At Isle Royale National Park in Michigan, this community occupies sites on very steep talus slopes or cliffs, typically facing northwest, and thus is relatively moist. Bedrock is igneous/metamorphic and may be either granite or basalt/diabase, and is circumneutral to somewhat alkaline. The vegetation forms a closed canopy forested scrub, with about 80% canopy cover. <i>Acer spicatum</i> is dominant in the canopy, with over 50% cover; other tree species present include <i>Thuja occidentalis, Betula papyrifera</i>, and <i>Picea glauca</i>. There is about 30% cover of short shrubs; <i>Taxus canadensis</i> and <i>Rubus parviflorus</i> are the most abundant shrubs. Cover of herbs is about 30%; the most abundant herbs are <i>Gymnocarpium dryopteris</i> and <i>Mitella nuda</i>. Cover of nonvascular plants is about 20%; <i>Pleurozium schreberi</i> is a common moss. |
Comm #6843
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Redbeds (Siltstone, Sandstone, Gypsum) Sparse Vegetation
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accession code: VB.CC.36788.CEGL005261
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Midwestern Ecology Working Group... |
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The Redbeds Rock Outcrop type is found in the Black Hills region of the United States. Stands occur on outcrops of the Permo-Triassic Spearfish Formation, composed of red siltstones and shales. Gypsum lenses are common and often cap the slopes, small hills and buttes where redbeds are exposed. Due to the softness of the parent rock material, exposures are often eroded to produce badlands-like topography. Occasionally, small cliff-like outcrops develop where strata are more resistant to erosion. This is a sparse vegetation type with total vegetative cover usually less than 10%. Graminoids and forbs typically are equally represented. Frequently found species include <i>Artemisia frigida, Hesperostipa comata (= Stipa comata), Schizachyrium scoparium, Achnatherum hymenoides (= Oryzopsis hymenoides), Tetraneuris acaulis (= Hymenoxys acaulis), Oxytropis lambertii, Heterotheca villosa, Paronychia depressa, Eriogonum pauciflorum, Hymenopappus filifolius</i>, and many other prairie forbs. Lichens and cryptogamic soils may be present. |
Comm #6844
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Chamerion angustifolium Rocky Mountain Herbaceous Vegetation
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accession code: VB.CC.32151.CEGL005856
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Western Ecology Working Group of... |
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This tentative, early successional association is known from one stand in Glacier National Park, Montana, east of the Continental Divide. The stand occurs on a gentle mountain valley of glacial-fluvial deposits, with an elevation of 1837 m (6023 feet). The soil is moderately well-drained clay loam with a large amount of silt and clay. The ground surface is mostly covered with litter and duff. This lush herbaceous community (80% total cover) consists of a high diversity of forbs and a few graminoids. There are a few short shrubs, <i>Ribes inerme, Salix farriae</i>, and <i>Dasiphora fruticosa ssp. floribunda</i>, found within this stand, with a combined cover of less than 5%. The herbaceous layer is dominated by <i>Chamerion angustifolium</i>, which has an average cover of 50%. <i>Fragaria virginiana</i> is the second most abundant forb with 30% average cover. Other common forbs include <i>Achillea millefolium, Geum macrophyllum, Potentilla gracilis, Thalictrum occidentale</i>, and <i>Senecio integerrimus</i>. Graminoids present include <i>Elymus trachycaulus, Juncus balticus</i>, and <i>Carex preslii</i>. |
Comm #6845
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Bromus inermis - (Pascopyrum smithii) Ruderal Herbaceous Vegetation
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accession code: VB.CC.37125.CEGL005264
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Midwestern Ecology Working Group... |
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This smooth brome grassland type occurs widely throughout the northern Great Plains, in disturbed montane meadows in the Rocky Mountains, on relatively mesic sites in the semi-arid interior western United States, and perhaps more widely in the midwestern U.S. and Canada. Stands can occur in a wide variety of human-disturbed habitats, including highway rights-of-way, jeep trails, etc. The type is also widely planted for revegetating disturbed land, pasture and hay fields, and has escaped into a variety of habitats, including prairie, riparian grasslands, and mesic mountain meadows. The dominant grass is <i>Bromus inermis</i>, a naturalized species from Eurasia that forms moderately dense to dense stands that often develop into monocultures. Other weedy species such as <i>Cirsium arvense</i> and <i>Poa pratensis</i> may occur as well, but native species are generally less than 10% cover. Native species may include mixed-grass prairie and montane meadow grasses, such as <i>Pascopyrum smithii, Deschampsia caespitosa</i>, and <i>Hesperostipa comata (= Stipa comata)</i>, and sparse, scattered mesic shrubs such as <i>Symphoricarpos</i> spp., as well as many others. However, the native species are not conspicuous enough to identify the native plant association that could occupy the site, or the stand would be typed as such. |
Comm #6846
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Agropyron cristatum - (Pascopyrum smithii, Hesperostipa comata) Ruderal Herbaceous Vegetation
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accession code: VB.CC.37145.CEGL005266
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Midwestern Ecology Working Group... |
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This crested wheatgrass association occurs most commonly in the northern Great Plains of the United States and Canada. Sites are also reported from the southern Rocky Mountains and Colorado Plateau, and high plateaus of southern Utah, and it likely occurs throughout much of the semi-arid interior West. Stands occur in a wide variety of human-disturbed habitats, including highway rights-of-way, jeep trails, etc. It is also widely planted to revegetate pastures and western rangelands. The vegetation is characterized by a sparse to dense, medium-tall graminoid layer dominated by <i>Agropyron cristatum</i>, an introduced forage species from Russia and Siberia that has been planted extensively in the western United States. Other weedy species may occur as well, but native species are generally less than 10% cover. Native species may include mixed-grass prairie grasses, such as <i>Pascopyrum smithii</i> and <i>Hesperostipa comata (= )</i>, as well as others. In the Intermountain West, native grasses <i>Poa secunda</i> and <i>Pseudoroegneria spicata</i> may be present at low cover. |
Comm #6847
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Tsuga heterophylla - Chamaecyparis nootkatensis / Vaccinium ovalifolium / Lysichiton americanus Forest
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accession code: VB.CC.18826.TSUGAHETEROPHYL
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Western Ecology Working Group of... |
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Comm #6848
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CEGL008654
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accession code: VB.CC.7948.CEGL008654
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #6849
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Acer spicatum Shrubland Alliance
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accession code: VB.CC.21297.ACERSPICATUMSHR
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Midwestern Ecology Working Group... |
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Comm #6850
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CEGL004598
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accession code: VB.CC.6135.CEGL004598
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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