| Add/Drop |
Name
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Reference
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Plots↓
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Description |
Comm #12111
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CEGL000805
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accession code: VB.CC.3409.CEGL000805
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12112
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Eriogonum deserticola Sand Dune Sparse Vegetation
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accession code: VB.CC.32259.CEGL001962
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Western Ecology Working Group of... |
0
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This association occurs on active dunes in the extreme southwestern portion of Arizona, southeastern California and likely occurs in adjacent Sonora, Mexico. Sparse stands of dune vegetation included in this type occur in the lower Sonoran Desert below 100 m elevation. Stands occur on active and partially stabilized dunes. Sites are level to steep, include all aspects, and the substrates are deep, shifting dune sands. Total vegetation canopy cover may be less than 10% and is dominated by the dwarf-shrub <i>Eriogonum deserticola</i>. The perennial bunchgrass <i>Pleuraphis rigida (= Hilaria rigida)</i> is codominant in some stands. Species diversity is typically low compared to adjacent vegetation. Other species present include shrubs and dwarf-shrubs such as <i>Ambrosia dumosa, Croton wigginsii, Ephedra trifurca, Larrea tridentata, Parkinsonia microphylla, Psorothamnus emoryi</i>, and the forbs, <i>Brassica tournefortii, Cryptantha</i> sp., <i>Dicoria canescens</i>, and <i>Palafoxia arida</i>. |
Comm #12113
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Carex elynoides Herbaceous Vegetation
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accession code: VB.CC.34502.CEGL001852
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Western Ecology Working Group of... |
0
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This high-elevation herbaceous association is found in the Rocky Mountains of Montana, Wyoming, Colorado and New Mexico. This description is based on information from Great Sand Dunes National Park and Preserve in Colorado. Additional global information will be added as it becomes available. This is a common association of alpine fell-fields found on mid to high colluvial slopes, benches, and ridges at 3530 to 3905 m elevation. Slopes are moderately steep to very steep (12-45°) and aspect is variable. Nonvegetative cover includes bare soil (3-54%), litter and duff (5-60%), gravel (0-80%), and rock (0-30%). There is extensive elk use within the majority of sampled areas. Herbaceous cover for this association is typically 50% or more, but occasionally lower. Graminoid cover (10-70%) is usually slightly higher than forb cover (<30%). <i>Carex elynoides</i> is the characteristic dominant graminoid (10-30%). Other common graminoid species include <i>Calamagrostis purpurascens, Carex rupestris var. drummondiana, Elymus trachycaulus, Festuca brachyphylla, Luzula spicata, Poa glauca ssp. rupicola</i>, and <i>Trisetum spicatum</i>. Common forb species include <i>Achillea millefolium var. occidentalis, Arenaria fendleri, Castilleja</i> spp., <i>Geum rossii var. turbinatum, Heuchera parvifolia, Minuartia obtusiloba</i>, and <i>Trifolium dasyphyllum</i>. In some stands, a dwarf-shrub layer is present that may include <i>Dasiphora fruticosa ssp. floribunda (= Dasiphora floribunda), Picea engelmannii, Salix planifolia</i>, or <i>Pinus aristata</i> with up to 10% cover. |
Comm #12114
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CEGL000125
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accession code: VB.CC.2752.CEGL000125
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12115
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Pinus (pungens, rigida) / Quercus ilicifolia / Gaylussacia baccata Woodland
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accession code: VB.CC.25558.PINUSPUNGENSRIG
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Southeastern Ecology Working Gro... |
0
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This association represents predominantly evergreen woodlands occupying xeric, convex, often rocky south- and west-facing slopes, ridge spurs, crests, and clifftops in the central Appalachians and peripherally in the Southern Blue Ridge. Stands occur at elevations from 450 to 1200 m (1500-4000 feet) on various substrates but most commonly on acidic, sedimentary and metasedimentary substrates (e.g., quartzites, sandstones, and shales). Soils are very infertile, shallow, and droughty. A thick, poorly decomposed duff layer, along with dead wood and highly volatile ericaceous shrubs, create a strongly fire-prone habitat. Pinus pungens and Pinus rigida, individually or together, dominate the canopy, which can approach forest physiognomy in some situations as a result of fire suppression. Scattered canopy and subcanopy associates may include Quercus prinus, Quercus coccinea, Quercus rubra, Quercus marilandica, Pinus virginiana, Castanea dentata, Acer rubrum, Sassafras albidum, Nyssa sylvatica, and Amelanchier arborea. Quercus ilicifolia dominates a moderately open to very dense tall-shrub layer, while variable combinations of Kalmia latifolia, Gaylussacia baccata, Vaccinium pallidum, Vaccinium angustifolium, Vaccinium stamineum, Pieris floribunda, Rhododendron catawbiense, and other ericads form a generally dense low-shrub layer. Smilax rotundifolia and Smilax glauca may be prominent climbers among the shrubs. Herbaceous species, often very sparse, are rooted in small openings among the shrubs, on rocks, and in disturbed areas where mineral soil is exposed. Typical herbs and subshrubs include Epigaea repens, Gaultheria procumbens, Xerophyllum asphodeloides, Iris verna, Pteridium aquilinum var. latiusculum, Melampyrum lineare var. latifolium, Stenanthium gramineum var. micranthum, Uvularia puberula, Lycopodium tristachyum, Aralia hispida (usually on outcrops), and Carex tonsa. Periodic fire is an important ecological process which provides opportunities for the regeneration of both canopy pines and less competitive herbaceous species, while setting back successional encroachment of xeric oaks. On many sites (e.g., clifftops, quartzite ledges), the vegetation is self-perpetuating due to extreme edaphic conditions. |
Comm #12116
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Carex elynoides - Lupinus argenteus Herbaceous Vegetation
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accession code: VB.CC.33935.CEGL001854
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Western Ecology Working Group of... |
0
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This association is known from broad, gentle alpine ridges of east-central Idaho. The association occurs on gentle to moderately steep ridgetops. Sites are immediately downwind of windward ridgecrest exposures at 2870-3290 m (9400-10,800 feet) elevation. Seasonal snow accumulation is low. The community is characterized by a short, dense, fibrous-rooted <i>Carex elynoides</i>-dominated turf. <i>Festuca brachyphylla ssp. brachyphylla</i> is a commonly associated grass species. Important herbaceous species include <i>Lupinus argenteus, Phlox pulvinata, Potentilla diversifolia, Minuartia obtusiloba</i>, and <i>Ivesia gordonii</i>. The leeward, concave microtopography of these sites allows greater snow accumulation, compared to the environmentally associated community, <i>Carex elynoides - Oxytropis sericea</i>. Soil disturbance resulting from the burrowing of rodents that utilize winter snow cover gives rise to consistently greater abundance of <i>Lupinus argenteus</i> in <i>Carex elynoides - Lupinus argenteus</i> compared to ~<i>Carex elynoides - Oxytropis sericea</i> Herbaceous Vegetation (CEGL001856)$$. |
Comm #12117
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CEGL001566
» more details
accession code: VB.CC.4134.CEGL001566
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12118
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CEGL007142
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accession code: VB.CC.6990.CEGL007142
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12119
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A.71
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accession code: VB.CC.2342.A71
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12120
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Populus balsamifera ssp. trichocarpa / Betula papyrifera Forest
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accession code: VB.CC.23666.POPULUSBALSAMIF
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Western Ecology Working Group of... |
0
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