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Comm #11601
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Pinus edulis - Juniperus osteosperma / Artemisia bigelovii Woodland
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accession code: VB.CC.32047.CEGL002118
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Western Ecology Working Group of... |
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This association is found in western Colorado and eastern Utah, usually on mesa tops and canyon rims. Sites can have gentle to steep slopes and with varying local aspects but have been most commonly observed on sites whose general aspect is north or east. This association has been found at sites between 1476 and 2104 m (4840-6900 feet) elevation and mostly on sandstone. Soils are shallow, well-drained to rapidly drained loamy sands, sandy loams, or silt loams. The unvegetated ground surface is typically composed of litter, bedrock, and bare soil. This woodland association generally has sparse to moderate total vegetation cover. There is an open tree canopy 2-5 m tall dominated by <i>Pinus edulis</i> and <i>Juniperus osteosperma</i> with 2-20% cover each. The shrub layer is also open and, besides the abundance of <i>Artemisia bigelovii</i>, is usually mixed in composition. <i>Artemisia bigelovii</i> is the most abundant shrub with 2-10% cover. Other typical shrubs are <i>Echinocereus triglochidiatus, Ephedra torreyana, Ephedra viridis, Eriogonum corymbosum, Fraxinus anomala</i> (which can be present in the tree canopy, as well), and <i>Gutierrezia sarothrae</i>. The herbaceous layer typically has less than 5% cover and contains graminoid species such as <i>Achnatherum hymenoides, Elymus elymoides</i>, and <i>Pleuraphis jamesii</i> and forbs such as <i>Arenaria fendleri, Erodium cicutarium, Heterotheca villosa</i>, and <i>Tetraneuris acaulis</i>. |
Comm #11602
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VII.A
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accession code: VB.CC.147.VIIA
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EcoArt 2002 |
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(cliffs and pavement). |
Comm #11603
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Acacia farnesiana - (Prosopis glandulosa) Woodland
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accession code: VB.CC.36385.CEGL002131
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Southeastern Ecology Working Gro... |
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This woodland occurs over moderately to poorly drained soils along riparian corridors and upland depressions. It is currently described from the South Texas Plains and the Coastal Prairie but may range into other ecoregions. It is thought to be a natural disturbance type of these wetlands and may succeed to <i>Celtis laevigata</i>-dominated forest, especially on floodplains of major streams. Data are insufficient to separate it from an even more widespread anthropogenic disturbance community, with introduced species such as <i>Triadica sebifera (= Sapium sebiferum)</i> and <i>Rosa bracteata</i> associated on upper coast and <i>Parkinsonia aculeata</i> on the South Texas Plains. In wet areas, <i>Acacia farnesiana (= Acacia minuta)</i> often forms nearly pure stands or occurs as scattered individuals within a matrix of weedy grasses during the course of secondary succession. This woodland may grade into <i>Acacia rigidula</i> or <i>Acacia berlandieri</i> shrublands in southern Texas and <i>Schizachyrium scoparium</i> grasslands in the Coastal Prairie. One occurrence in southern Texas has <i>Acacia farnesiana, Prosopis glandulosa</i>, and <i>Celtis pallida</i> in the canopy, with a dense ground layer of <i>Spartina spartinae</i> along with <i>Wissadula periplocifolia, Sidastrum paniculatum</i>, and <i>Eleocharis montevidensis</i>. |
Comm #11604
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CEGL004786
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accession code: VB.CC.6294.CEGL004786
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #11605
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Quercus alba - (Carya ovata) / Carex pensylvanica Glaciated Woodland
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accession code: VB.CC.36785.CEGL002134
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Midwestern Ecology Working Group... |
0
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This white oak - mixed oak - hickory woodland type is found in the central tallgrass region of the United States. Stands occur on gentle upper and midslopes of hills, ridges and plains, on a variety of aspects or on flatland. Soils are well-drained, moderately deep to deep (>100 cm). The parent material is primarily loess, glacial till, gravel, or deeply weathered bedrock. The tree canopy is moderately tall (20-25 m), somewhat open-grown with low tree densities and somewhat spreading canopies. Canopy cover is 30-80%, but varies with fire regime. The woody sapling layer is variable, typically absent or scattered, but increasing in the absence of fire. Dominant trees include <i>Quercus alba, Carya ovata, Carya ovalis, Carya alba (= Carya tomentosa), Quercus rubra</i>, and <i>Quercus velutina</i>. Shrubs and saplings may include <i>Cornus foemina, Corylus americana, Crataegus</i> spp., <i>Malus ioensis</i>, and <i>Rhus aromatica</i>, and, in the absence of fire, <i>Amelanchier arborea, Cornus florida, Ostrya virginiana, Viburnum prunifolium, Viburnum rufidulum</i>, and <i>Viburnum rafinesquianum</i>. The ground layer is a mix of graminoids and forbs. Typical graminoid dominants may include <i>Andropogon gerardii</i> and <i>Carex pensylvanica</i> in more open areas, and <i>Bromus kalmii (= Bromus purgans), Elymus virginicus, Festuca subverticillata (= Festuca obtusa), Elymus hystrix (= Hystrix patula), Dichanthelium oligosanthes (= Panicum oligosanthes), Dichanthelium boscii (= Panicum boscii)</i>, and <i>Chasmanthium latifolium (= Uniola latifolia)</i> in woodland areas. Common herbs include <i>Amphicarpaea bracteata, Asclepias purpurascens, Symphyotrichum drummondii (= Aster drummondii), Echinacea purpurea, Helianthus hirsutus, Helianthus strumosus, Lespedeza violacea, Penstemon digitalis, Sanicula canadensis, Sanicula odorata (= Sanicula gregaria), Solidago ulmifolia, Veronicastrum virginicum</i>, and others. |
Comm #11606
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Quercus buckleyi - Fraxinus texensis - Juniperus ashei Forest
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accession code: VB.CC.34857.CEGL002135
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Southeastern Ecology Working Gro... |
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This association consists of <i>Quercus buckleyi</i>-dominated vegetation of dry-mesic/mesic slopes over calcareous soils of the eastern and southern Edwards Plateau and Lampasas Cutplain, in central Texas. Stands are often clearly dominated by <i>Quercus buckleyi</i>. Another dominant and characteristic canopy species is <i>Fraxinus texensis</i>. Total cover of <i>Juniperus ashei</i> is variable but typically less than 40%, and though a characteristic component of the canopy, most of this cover is in the midstory. Other associated canopy species include <i>Ulmus crassifolia, Celtis laevigata var. laevigata, Celtis laevigata var. texana, Celtis laevigata var. reticulata, Quercus fusiformis, Quercus muehlenbergii, Quercus sinuata var. breviloba</i>, and <i>Prunus serotina var. eximia</i>. Herbaceous components may include <i>Carex planostachys, Lespedeza texana, Carex edwardsiana, Tragia ramosa, Brickellia cylindracea, Symphyotrichum drummondii (= Aster drummondii), Nolina texana, Commelina erecta</i>, and <i>Passiflora lutea</i>. These forests (typically with a closed canopy, although sometimes with open canopies) lack <i>Quercus laceyi</i>, which is more characteristic of the Balcones portion of the western Edwards Plateau. |
Comm #11607
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Platanus wrightii - Alnus oblongifolia / Baccharis salicifolia Forest
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accession code: VB.CC.32914.CEGL002686
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Western Ecology Working Group of... |
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This is a lowland forested riparian association known from the Gila River watershed in New Mexico and potentially occurs elsewhere in southwestern New Mexico and southern Arizona. This association is known to occur at elevations ranging between 1650-1750 m (5380-5750 feet), along rivers that have moderate gradients (1.2%), and coarse bouldery/cobbly riverbeds. The community often occurs on younger terraces and elevated sidebars that are above the active channel (discharge ratios range from 3.0-4.3), with variable flooding frequencies that range from yearly to every 50 years. Streamflows are either intermittent or perennial and fed by springs or snowmelt. Channels are often deeply incised within narrow valleys. Soils are coarse, well-drained, and moderately or poorly stratified. They are sandy at the surface, and generally remain coarse-textured throughout the profile. Cobbles and rock are also present on the surface or buried near the surface and at lower depths. Soils are primarily moist, poorly developed Aeric Fluvaquents and Oxyaquic Ustifluvents, while some `soils' consist solely of loose deposits of sands, gravels, and cobbles (riverwash). They tend to be dry within 1 m of the surface most of the year, but may be periodically moist at depths still within the rooting zone during most years, particularly during spring high waters. <i>Platanus wrightii</i> dominates the canopy with <i>Alnus oblongifolia</i> as a canopy codominant or subdominant. Reproduction of <i>Platanus wrightii</i> and <i>Alnus oblongifolia</i> is common in the understory, but young saplings of <i>Juglans major</i> and <i>Acer negundo</i> may also be present. The stand forms a moderately closed to closed canopy. The shrubby understory consists primarily of <i>Baccharis salicifolia</i>. Other shrubs are common, but not abundant. Herbaceous species are diverse and variable with 62 herbaceous species recorded for the type, but only 16 more than once. Native wetland indicator species include <i>Carex microptera, Adiantum capillus-veneris, Aquilegia chrysantha, Equisetum laevigatum, Mimulus guttatus, Rudbeckia laciniata</i>, and <i>Veronica americana</i>. |
Comm #11608
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Alnus incana ssp. tenuifolia - Salix irrorata Shrubland
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accession code: VB.CC.34375.CEGL002687
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Western Ecology Working Group of... |
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This is a montane riparian shrubland association common in mountainous portions of the upper watersheds of the Rio Grande, Pecos, and Canadian watersheds in northern New Mexico. It occurs at elevations ranging from 1950-2710 m (6375-8775 feet) along small perennial streams with moderate to steep gradients. It occurs primarily on depositional bars and streambanks composed of sands, gravels and cobbles. The sites within and along channels are flooded on a yearly basis. Some sites have aggraded with the accumulation of sediment, and flooding is less frequent (5- to 10-year intervals). Soils are moist and have coarse-loamy surfaces that overlie deeper sandy-skeletal layers consisting of cobbles and gravel. The soil matrix may be upwards of 80% rock fragments. Soils may at some point in the season be dry at the surface, but tend to be moist at shallow depths and through the top 10-25 cm (4-10 inches) of the soil profile during most years. <i>Alnus incana ssp. tenuifolia</i> and <i>Salix irrorata</i> are abundant to luxuriant and dominate a dense, diverse shrub layer. Other willows, such as <i>Salix bebbiana, Salix boothii, Salix lutea</i>, and <i>Salix monticola</i>, may be well-represented. Other common shrubs are <i>Rosa woodsii</i> and <i>Ribes inerme</i>. Mature trees are infrequent or absent, but <i>Populus angustifolia</i> reproduction may occur beneath the canopy. The herbaceous undergrowth is lush and diverse with 148 graminoids and forbs recorded for the type (30 of which are exotic). Taller wetland forbs, such as <i>Rudbeckia laciniata, Cicuta douglasii</i>, and <i>Heracleum maximum</i>, are prominent in many stands. Among the 42 herbaceous wetland indicators recorded for the type, the most present and common are <i>Carex microptera, Carex stipata, Glyceria striata, Juncus balticus, Juncus saximontanus, Symphyotrichum foliaceum (= Aster foliaceus), Epilobium ciliatum, Equisetum arvense, Equisetum laevigatum, Geum macrophyllum, Mentha arvensis, Mertensia franciscana, Oxypolis fendleri</i>, and <i>Veronica americana</i>. |
Comm #11609
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CEGL003022
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accession code: VB.CC.5233.CEGL003022
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EcoArt 2002 |
0
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Comm #11610
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CEGL003023
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accession code: VB.CC.5234.CEGL003023
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EcoArt 2002 |
0
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