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Name
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Reference
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Plots↓
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Description |
Comm #11181
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CEGL003126
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accession code: VB.CC.5333.CEGL003126
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11182
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Atriplex confertifolia / Achnatherum hymenoides Shrubland
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accession code: VB.CC.34467.CEGL001311
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Western Ecology Working Group of... |
0
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This plant association is widely scattered on benches, plateaus, and gullies within the <i>Atriplex confertifolia</i> zone of Colorado, Idaho, Nevada, Utah and Oregon, and is also purported to occur in California and Wyoming. It is best developed in sites with an alkaline, yet coarse-textured soil. Elevations range from 1250 to 1780 m (4100-5840 feet) in Utah and Colorado. The association is typically found on well-drained, alkaline soils derived from volcanic tuff or shale that often have been modified by alluvial deposits. Low-growing <i>Atriplex confertifolia</i> is the dominant shrub, usually with up to 15% cover, although other shrubs, including <i>Picrothamnus desertorum (= Artemisia spinescens), Artemisia tridentata ssp. wyomingensis, Gutierrezia sarothrae, Opuntia polyacantha, Grayia spinosa</i>, and <i>Sarcobatus vermiculatus</i>, may also be present in low amounts. In high-quality, ungrazed stands <i>Achnatherum hymenoides</i> may have up to 20% cover and dominates the otherwise sparse herbaceous understory. Lesser amounts of other perennial grasses, including <i>Elymus elymoides, Hesperostipa comata, Pleuraphis jamesii, Poa fendleriana</i>, and <i>Poa secunda</i>, are often present. Forbs vary greatly across the range of this association and never contribute significant cover. Some locally common species include <i>Eriogonum</i> spp., <i>Phlox hoodii, Sphaeralcea grossulariifolia, Thelypodium flexuosum</i>, and <i>Townsendia florifera</i>. Stands degraded by excessive livestock grazing have abundant <i>Bromus tectorum</i> in the understory and higher total herbaceous cover. |
Comm #11183
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CEGL000271
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accession code: VB.CC.2897.CEGL000271
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11184
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Citharexylum berlandieri - Yucca treculeana - Ebenopsis ebano - Phaulothamnus spinescens Shrubland
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accession code: VB.CC.36358.CEGL002170
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Southeastern Ecology Working Gro... |
0
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This community is a xeric, subtropical shrubland dominated by thorny evergreen shrubs, generally 2-4 m tall. It occurs in eastern Cameron County, Texas, on well-drained portions of clay dunes, called lomas. At the time of formation, lomas were located on the leeward side of irregularly flooded lagoons and tidal flats that when dry provided the source for the wind-blown clayey sediments. Some lomas may be flooded by the sea during severe storm events. Vegetation in this community is sometimes influenced by salt spray, high winds, limited rooting depth, saline water table, and extreme xeric conditions. Similar vegetation may occur in adjacent regions of Mexico. The surrounding tidal grassland is often dominated by <i>Sporobolus wrightii</i> and <i>Spartina spartinae</i>. Composition of this community is extremely variable, and there is usually no clear dominant, except locally. Local dominants include <i>Citharexylum berlandieri, Leucophyllum frutescens, Havardia pallens (= Pithecellobium pallens)</i>, and <i>Ebenopsis ebano</i>. This association is broadly described to cover all of the highly variable thornscrub vegetation occurring on lomas in south Texas. Soils are typically Point Isabel clay loam. Other typical shrub species include <i>Acacia schaffneri, Amyris madrensis, Baccharis texana, Borrichia frutescens, Sideroxylon celastrinum, Castela erecta, Celtis pallida, Condalia hookeri var. hookeri, Croton humilis, Xylothamia palmeri (= Ericameria austrotexana), Forestiera angustifolia, Gymnosperma glutinosum, Jatropha dioica, Karwinskia humboldtiana, Lantana urticoides (= Lantana horrida), Mammillaria heyderi, Maytenus phyllanthoides, Opuntia engelmannii var. lindheimeri, Phaulothamnus spinescens, Prosopis glandulosa var. glandulosa, Prosopis reptans, Schaefferia cuneifolia, Sideroxylon celastrinum (= Bumelia celastrina), Yucca treculeana, Zanthoxylum fagara</i>, and <i>Ziziphus obtusifolia var. obtusifolia</i>. The understory is open and networked with cattle and deer trails. Many native grasses occur in this community, including <i>Tridens albescens, Pappophorum vaginatum, Eragrostis</i> spp., <i>Bouteloua trifida, Digitaria californica, Sporobolus wrightii, Aristida purpurea, Setaria leucopila, Buchloe dactyloides</i>, and <i>Aristida</i> spp. |
Comm #11185
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CEGL004417
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accession code: VB.CC.5979.CEGL004417
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11186
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CEGL001794
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accession code: VB.CC.4349.CEGL001794
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11187
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Picea engelmannii / Moss Forest
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accession code: VB.CC.33553.CEGL000371
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Western Ecology Working Group of... |
0
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This dry, cold spruce forest occurs in the southwestern United States from northern Arizona and New Mexico to southern Colorado. It occurs on summits, ridges, and upper slopes from 2780-3500 m (9110-11,500 feet) in elevation. Soils are very well-drained and cryic with lithic or skeletal profiles. The tree canopy is solely characterized by <i>Picea engelmannii</i>. Seral species include <i>Abies concolor, Pinus aristata, Pseudotsuga menziesii</i>, and occasionally <i>Pinus strobiformis</i> or <i>Populus tremuloides</i>. The shrub and herbaceous layers are sparse. Sporadic shrubs include <i>Juniperus communis, Shepherdia canadensis, Vaccinium scoparium, Vaccinium myrtillus, Ribes montigenum</i>, or <i>Lonicera utahensis</i>, all of which have less than 10% total cover. The herbaceous layer is likewise sparse; herbs with low cover include <i>Arnica cordifolia, Orthilia secunda, Pyrola chlorantha, Carex rossii</i>, or <i>Muhlenbergia montana</i>. Nonvascular plants are dominant in this association. This association is characterized by the dominance of <i>Picea engelmannii</i> in the tree canopy with a lack of <i>Abies lasiocarpa</i> over a dominant but sometimes patchy moss layer and sparse shrubs and herbs. |
Comm #11188
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Quercus prinus - Quercus rubra Forest
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accession code: VB.CC.35138.CEGL007993
NOT CURRENTLY ACCEPTED
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Southeastern Ecology Working Gro... |
0
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This is a Provisional association for forests in this alliance that occur on middle slopes in the Cumberland Mountains and Appalachian Plateau of Kentucky, but more information is needed to characterize this type. |
Comm #11189
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Pinus ponderosa / Vaccinium caespitosum Woodland
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accession code: VB.CC.28178.PINUSPONDEROSAV
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Western Ecology Working Group of... |
0
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This association is found in the montane zone of the central and northern Rocky Mountains from western Montana, Idaho and northeastern Washington. Elevations range from 700-1370 m (2300-4500 feet) extending to 1950 (6400 feet) east of the Continental Divide. Sites are relatively warm and moist, typically with cold nights, often occurring where cold air accumulates causing high diurnal temperature fluctuations, high daily maximum temperatures and frequent summer frosts. Topography is flat to gently undulating or moderately sloping terrain typically occurring on valley bottoms, terraces, lower slopes, and benches on all aspects. Soils are typically excessively well-drained, moderately deep, acidic, gravelly, sandy loam or loam, derived from a variety of noncalcareous parent materials, especially glacial till. Ground cover is mostly tree litter, often with duff over 4 cm deep. The vegetation is characterized by an open to moderately dense tree canopy that is dominated by Pinus ponderosa. In some stands scattered Pseudotsuga menziesii, Larix occidentalis, Populus tremuloides, Picea engelmannii, or Pinus contorta trees may be present. Vaccinium caespitosum and Arctostaphylos uva-ursi (indicator species) are common to dominant in the patchy to continuous dwarf-shrub layer. Other shrubs and dwarf-shrubs may include low cover of Amelanchier alnifolia, Linnaea borealis (on more mesic sites), Mahonia repens, Paxistima myrsinites, Ribes spp., Rosa woodsii, Spiraea betulifolia, or Symphoricarpos albus. The herbaceous layer is sparse to moderately dense (to 30% cover) and is typically dominated or codominated by perennial graminoids in the openings such as Calamagrostis rubescens, Carex geyeri, or Festuca spp. Forbs generally have sparse cover but may be diverse and include Arnica cordifolia, Balsamorhiza sagittata, Fragaria virginiana, Heuchera cylindrica, Maianthemum racemosum, Tiarella trifoliata, and Thalictrum occidentale. |
Comm #11190
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CEGL004403
» more details
accession code: VB.CC.5969.CEGL004403
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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