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Name
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Reference
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Plots↓
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Description |
Comm #13011
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Fraxinus pennsylvanica - Juniperus virginiana - Pinus spp. - Acer negundo Ruderal Forest
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accession code: VB.CC.36591.CEGL005456
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Midwestern Ecology Working Group... |
0
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Comm #13012
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Quercus turbinella - Garrya flavescens - Arctostaphylos pungens Shrubland
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accession code: VB.CC.32765.CEGL000977
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Western Ecology Working Group of... |
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This scrub oak shrubland association is currently described from Grand Canyon National Park in Arizona. More survey and classification work are needed to fully characterize this type. It occurs from approximately 2100 to 2450 m (6950-8100 feet) elevation, typically on very steep (30-40°), mid and upper sideslopes. This association strongly favors southern exposures. Soils are rapidly-drained sandy loams derived from various geologic parent materials. This vegetation type often forms large expanses across these environments. This association is characteristically dense and typically supports 60-80% shrub cover. Rich and varied assemblages of chaparral shrub species dominate this association, and the particular composition of species varies somewhat among stands. Dominant shrub species can exist as either tall or short shrubs depending upon site conditions. One major manifestation of this association occurs when <i>Quercus gambelii, Amelanchier utahensis</i>, and <i>Garrya flavescens</i> codominate the thick shrub layer. Another major phase can be seen when <i>Quercus turbinella</i> and <i>Arctostaphylos pungens</i> codominate the short-shrub stratum, and the other shrub species mentioned occur as associates. The full continuum of variation can be seen in many stands. <i>Robinia neomexicana</i> and <i>Cercocarpus montanus</i> occasionally add to the diversity of the tall-shrub stratum. <i>Symphoricarpos</i> spp. sometimes occurs along the ground; however, due to the preponderance of the taller layers, dwarf-shrubs are otherwise absent from this community. Overall, the understory is poorly-developed, but patches of <i>Poa fendleriana</i> occur in most stands. A variety of different species, including <i>Penstemon linarioides, Hymenopappus filifolius, Comandra umbellata, Arabis</i> spp., <i>Packera multilobata, Castilleja linariifolia</i>, and <i>Penstemon rostriflorus</i>, can occur. |
Comm #13013
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CEGL008638
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accession code: VB.CC.7937.CEGL008638
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #13014
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Hibiscus tiliaceus Lowland Wet Forest
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accession code: VB.CC.31537.CEGL008163
NOT CURRENTLY ACCEPTED
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Western Ecology Working Group of... |
0
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Comm #13015
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Platanus wrightii / Sparse Forest
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accession code: VB.CC.28046.PLATANUSWRIGHTI
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Western Ecology Working Group of... |
0
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This association is found in the Lower Gila River watershed (Mogollon Creek) and Animas Creek of the Black Range (eastern slope in the Rio Grande basin) of southwestern New Mexico and probably in southeastern Arizona. This type is known from dry creek and terraces beds at around 1740 m (4700 feet) elevation. Soils have been described as relatively dry, well-drained, weakly developed Entisols and Inceptisols (fine-loamy Oxyaquic Torrifluvents and coarse-loamy/sandy-skeletal Fluventic Ustochrepts). The dense overstory is dominated by Platanus wrightii with Celtis laevigata var. reticulata a sometimes well-represented subcanopy. It is characterized by the lack of significant shrub and herbaceous cover. Only Prosopis glandulosa is common. Overall diversity is low (22 species) and variable. Litter, woody debris, and sand dominate the shaded forest floor. |
Comm #13016
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Pinus clausa / Quercus inopina Woodland
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accession code: VB.CC.35671.CEGL003555
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Southeastern Ecology Working Gro... |
0
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This Lake Wales Ridge scrub association is limited to Highlands and Polk counties, Florida. It is characterized by an open to widely scattered overstory of <i>Pinus clausa</i> and is distinguished from related scrub communities by the presence of <i>Quercus inopina</i>, instead of <i>Quercus myrtifolia</i> and/or <i>Quercus geminata</i>. In addition, this community may support numerous endemic plants and animals not present in other sand pine scrub communities. |
Comm #13017
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A.1294
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accession code: VB.CC.1064.A1294
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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This short grassland of dry subalpine and alpine meadows occurs on slopes and ridges from 1500-3700 m elevation. Optimal habitats have subsurface moisture. The precipitation regime where this alliance occurs is strongly seasonal, with most precipitation falling in the winter months. Most precipitation in the upper elevational range falls as snow. Summers are very dry. This alliance is dominated by ~Carex filifolia$ in the herbaceous layer. Other herbs may include ~Oreostemma alpigenum (= Aster alpigenus), Penstemon heterodoxus, Juncus mertensianus, Potentilla$ spp., ~Cistanthe umbellata var. umbellata, Saxifraga aprica, Calamagrostis breweri, Ptilagrostis kingii, Trisetum spicatum, Erigeron algidus, Deschampsia caespitosa$, and ~Achillea millefolium var. occidentalis$. Emergent shrubs like ~Eriogonum nudum$ may be present. This alliance forms large stands and often intergrades with other meadow, forest, and woodland alliances. |
Comm #13018
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Artemisia tridentata / Elymus elymoides Shrubland
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accession code: VB.CC.34313.CEGL001001
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Western Ecology Working Group of... |
0
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Comm #13019
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CEGL000743
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accession code: VB.CC.3347.CEGL000743
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #13020
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A.1843
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accession code: VB.CC.1542.A1843
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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This is technically not an alliance. It is a placeholder for a group of sparsely vegetated associations that do not have adequate vegetation descriptions, but do share certain substrate characteristics. |
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