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Name
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Reference
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Description |
Comm #5571
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CEGL007622
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accession code: VB.CC.7234.CEGL007622
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EcoArt 2002 |
0
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Comm #5572
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Pinus edulis - Juniperus osteosperma / Atriplex spp. Woodland
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accession code: VB.CC.31667.CEGL002366
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Western Ecology Working Group of... |
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This woodland association is described from Capitol Reef and Canyonlands national parks in southern Utah and Black Canyon of the Gunnison National Park in western Colorado; it likely occurs elsewhere in the Colorado Plateau. These higher elevation pinyon-juniper stands occur on shale- and sandstone-derived soils at 1583-2083 m. Sites are gentle to steep (3- to 88-degree slopes) and occur on plateau slopes, washes, valley sides, midslopes of hills, and on ridgetops and hogbacks. Substrates are variable and include silty or sandy soils derived from sandstones and shale, rapidly drained gravelly/rocky soils, and soils derived from eroded, highly dissected gypsum parent material with poor infiltration/rapid runoff. The unvegetated ground surface has high cover of biotic crust, bare ground, or sometimes a layer of surface rock and gravel. The vegetation is characterized by an open to moderate (15-25% cover) tree canopy 2-5 m tall that is dominated by <i>Pinus edulis</i> and <i>Juniperus osteosperma</i> trees, with an open to moderately dense short-shrub layer dominated by <i>Atriplex confertifolia</i> or <i>Atriplex canescens</i>. Other short and dwarf-shrubs present may include <i>Artemisia tridentata ssp. wyomingensis, Atriplex cuneata, Chrysothamnus viscidiflorus, Ephedra torreyana, Ephedra viridis, Gutierrezia sarothrae, Krascheninnikovia lanata, Mahonia fremontii</i>, and the cactus <i>Opuntia polyacantha</i>. The open to sparse (<15% cover) herbaceous layer is primarily composed of graminoids such as <i>Achnatherum hymenoides, Leymus salinus (= Elymus salinus), Pleuraphis jamesii, Poa secunda</i>, and <i>Sporobolus flexuosus</i>. Forbs such as <i>Eriogonum inflatum</i> typically provide less than 1% total cover. The introduced annual species <i>Bromus tectorum</i> and <i>Erodium cicutarium</i> are often abundant. <i>Atriplex canescens</i> and <i>Artemisia tridentata ssp. wyomingensis</i> are restricted to the stand with non-gypsum parent material. Cryptogams provide up to 27% cover. |
Comm #5573
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Pinus edulis - Juniperus osteosperma / Bromus tectorum Ruderal Woodland
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accession code: VB.CC.31986.CEGL002367
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Western Ecology Working Group of... |
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This woodland association has only been described from Capitol Reef National Park in southern Utah and Black Canyon of the Gunnison National Park in western Colorado. Stands are found on mesas, canyon sides, ridges, hillslopes, often on steep colluvial midslopes, valley bottoms and high stream terraces. Sites are typically moderate to steep, but range from 4- to 38-degree slopes, occur between 1555 and 2274 m elevation, and are often oriented to warmer southerly aspects. The unvegetated ground surface is generally bedrock, rock and gravel with moderate cover of bare ground and relatively low cover of litter. Soils in bottomland and stream terrace sites are typically well-drained fine sand derived from alluvium. It occurs in areas that experienced more than a century of concentrated domestic livestock grazing. The vegetation is characterized by an open to relatively closed canopy, typically 5-10 m tall, of <i>Pinus edulis</i> and <i>Juniperus osteosperma</i> trees that range in cover from 15 to 50%. <i>Juniperus osteosperma</i> cover tends to be more abundant than <i>Pinus edulis</i>, but either can dominate. The shrub layer is diverse but sparse to low in cover, providing less than 15% cover per stratum. Common shrubs include <i>Amelanchier alnifolia, Amelanchier utahensis, Artemisia tridentata ssp. wyomingensis, Brickellia californica, Cercocarpus montanus, Ericameria nauseosa, Opuntia fragilis, Opuntia polyacantha, Quercus gambelii, Ribes inerme, Symphoricarpos oreophilus</i>, and <i>Symphoricarpos rotundifolius</i>. The herbaceous layer has sparse to low cover (typically <15%) and has low diversity, being characteristically dominated by <i>Bromus tectorum</i>. Common graminoids with low cover include <i>Achnatherum hymenoides, Carex geyeri, Poa fendleriana, Sporobolus cryptandrus</i>, and <i>Sporobolus airoides</i>. Forbs are of moderate diversity and include <i>Agoseris glauca var. laciniata, Allium</i> sp., <i>Antennaria rosea, Arabis</i> spp., <i>Arenaria fendleri, Astragalus</i> sp., <i>Balsamorhiza sagittata, Chaenactis douglasii, Collinsia parviflora, Descurainia pinnata, Eriogonum lonchophyllum, Heterotheca villosa, Lomatium simplex, Machaeranthera canescens, Phlox longifolia</i>, and <i>Senecio</i> spp. |
Comm #5574
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Pseudotsuga menziesii / Festuca campestris Woodland
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accession code: VB.CC.19320.PSEUDOTSUGAMENZ
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Western Ecology Working Group of... |
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Comm #5575
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Tsuga mertensiana - Abies amabilis / Vaccinium membranaceum - Valeriana sitchensis Forest
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accession code: VB.CC.19148.TSUGAMERTENSIAN
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Western Ecology Working Group of... |
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Comm #5576
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Pinus edulis - Juniperus osteosperma / Psathyrostachys juncea Ruderal Woodland
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accession code: VB.CC.32000.CEGL002368
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Western Ecology Working Group of... |
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This semi-natural woodland association currently is documented only from sites in and adjacent to Capitol Reef National Park in southeastern Utah; this summary is derived from plots sampled in the park in 2003. It occurs on alluvial flats, on sites with gentle (7%) slopes at 2043 m elevation and a southeastern aspect. The unvegetated surface has high exposure of bare soil and moderate cover of dead wood. Litter is sparse, less than 10% cover. Parent materials are mixed, and the soils are well-drained sandy loams derived from alluvium. This association was created following BLM treatments of sagebrush flats to enhance grazing potential. Total vegetation cover ranges from 22 to 50% and is characterized by an open canopy, typically 2-5 m tall, of young <i>Juniperus osteosperma</i> trees that range in cover from 5 to 15% and understory dominated by the perennial exotic bunchgrass <i>Psathyrostachys juncea (= Elymus junceus)</i> that ranges in cover from 15 to 25%. The shrub layer is sparse and includes <i>Artemisia tridentata ssp. wyomingensis</i> and <i>Chrysothamnus viscidiflorus</i>. Numerous non-native forbs have invaded these treated areas. The only remaining native herbaceous flora in the area is the forb <i>Mirabilis multiflora</i>. |
Comm #5577
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Lolium (arundinaceum, pratense) Herbaceous Vegetation
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accession code: VB.CC.37532.CEGL004048
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Nordman, C. 2004a. Vascular plan... |
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This association includes grassland pastures and hayfields, more-or-less cultural, though sometimes no longer actively maintained. It is currently defined for the Central and Southern Appalachians, Ozarks, Ouachita Mountains, and parts of the Piedmont and Interior Low Plateau, but it is possible throughout much of the eastern United States and southern Canada. The dominant species in this type are the European "tall or meadow fescues" (<i>Lolium</i> or <i>Schedonorus</i> spp.) of uncertain and controversial generic placement. Several other exotic grasses, including <i>Agrostis gigantea, Dactylis glomerata, Holcus lanatus, Phleum pratense</i>, and <i>Poa pratensis</i>, are common associates. These communities are sometimes nearly monospecific but can also be very diverse and contain many native as well as exotic species of grasses, sedges, and forbs. Exotic forbs include the legumes <i>Lespedeza cuneata, Trifolium campestre, Trifolium hybridum, Trifolium pratense</i>, and <i>Trifolium repens</i>, as well as <i>Achillea millefolium var. occidentalis, Calystegia sepium, Daucus carota, Leucanthemum vulgare, Oxalis stricta</i>, and <i>Plantago lanceolata</i>. Common native herbs include <i>Apocynum cannabinum, Desmodium canescens, Dichanthelium clandestinum, Erigeron annuus, Fragaria virginiana, Potentilla simplex, Solanum carolinense, Solidago canadensis</i>, and <i>Verbesina occidentalis</i>. |
Comm #5578
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River Valley Impoundment Mudflat Sparse Vegetation
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accession code: VB.CC.37168.CEGL004049
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This association represents shoreline vegetation typical of large mainstream and tributary reservoirs in western Tennessee and adjacent areas. This type occurs on sites which are subject to high water levels and complete inundation for much of the year, but that are drawn down in the early to mid summer. Lake margins with suitable substrate (generally silt or clay) are colonized by a variety of plant species adapted to intermittent inundation and saturated soils that are capable of completing their life cycle in a compressed growing season between drawdown and frost. The composition and structure of the vegetation are highly variable among locations and from year to year. In general, a number of short-statured annuals are characteristic, including <i>Rotala ramosior, Lindernia dubia, Fimbristylis autumnalis, Eragrostis hypnoides, Lipocarpha micrantha (= Hemicarpha micrantha), Eleocharis obtusa, Fimbristylis miliacea</i>, and others. Several perennial species may also be encountered, especially along the upper edges and boundaries of mudflats. Species can include <i>Alternanthera philoxeroides, Symphyotrichum lanceolatum var. lanceolatum (= Aster simplex), Juncus acuminatus, Justicia americana, Leersia oryzoides, Ludwigia</i> spp., <i>Panicum rigidulum (= Panicum agrostoides)</i>, and others. |
Comm #5579
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CEGL004683
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accession code: VB.CC.6205.CEGL004683
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #5580
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CEGL004684
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accession code: VB.CC.6206.CEGL004684
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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