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Name
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Reference
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Plots↓
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Description |
Comm #7901
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CEGL002183
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accession code: VB.CC.4707.CEGL002183
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7902
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Prunus serotina / Morella cerifera / Smilax rotundifolia Scrub Forest
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accession code: VB.CC.31023.CEGL006319
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Eastern Ecology Working Group of... |
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This association comprises tall, temperate, deciduous maritime shrublands or scrub forests of the mid-Atlantic coast. It generally occurs on the lee side of sand dunes along the coast and is subject to salt spray and winds. The substrate varies from pure sand directly adjacent to the ocean to loamy sands in more sheltered areas of the coast. Although placed within the shrubland class at one time, the physiognomy of this vegetation can be variable and ranges from open woodland to stunted forest to dense nearly impenetrable thicket (this association has been placed back in the forest class). Individual trees tend to be wind-pruned and multi-stemmed. The vegetation is dominated by <i>Prunus serotina, Amelanchier canadensis, Pinus taeda, Sassafras albidum, Photinia pyrifolia (= Aronia arbutifolia)</i>, and <i>Diospyros virginiana</i> in varying proportions. <i>Morella cerifera (= Myrica cerifera)</i> and <i>Vaccinium corymbosum</i> may form a subcanopy, but if the community is particularly stunted, this species may contribute substantially to the canopy. Lianas are abundant in the canopy or over the ground layer, and species include <i>Smilax rotundifolia, Smilax glauca, Parthenocissus quinquefolia</i>, and <i>Toxicodendron radicans</i>. Herbs are generally scarce to lacking entirely, and when present are generally made up of tree and vine seedlings. |
Comm #7903
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CEGL001864
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accession code: VB.CC.4418.CEGL001864
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7904
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CEGL001865
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accession code: VB.CC.4419.CEGL001865
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7905
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A.713
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accession code: VB.CC.2346.A713
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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This alliance includes thickets dominated by the exotic shrub ~Thespesia populnea$. These shrub thickets are characteristically dense and dominated by ~Thespesia populnea$, and usually are the result of natural or human disturbance, often on sandy coastal areas. Species of the remnant natural vegetation may be intermixed. |
Comm #7906
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CEGL007574
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accession code: VB.CC.7187.CEGL007574
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EcoArt 2002 |
0
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Comm #7907
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Populus angustifolia / Cornus sericea Woodland
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accession code: VB.CC.33024.CEGL002664
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Western Ecology Working Group of... |
0
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This narrowleaf cottonwood forest type is found in the western Great Plains and western mountain regions of the United States, north into Alberta, Canada. Elevations range from 2360 to 2720 m (7750-8900 feet) in northern New Mexico to 945 to 2044 m (3100-6700 feet) in Montana (east of the Continental Divide). Stands occur along major streams and small to moderate-sized rivers in the foothill-montane zone and northern plains and in the grassland zone of Alberta. Sites include narrow valleys (10 m) with swift, steep streams (4% gradient) where it occurs on narrow benches, and on wide valleys (150 m) on broad floodplains along, moderately steep, meandering rivers (2% gradients). Soils are highly variable and stratified. The vegetation is characterized by a closed to open canopy of deciduous trees dominated by <i>Populus angustifolia</i> and a thick understory of <i>Cornus sericea</i>. The tree canopy composition is highly variable but typically has less than 10% cover of other tree species, including conifers <i>Picea pungens, Pseudotsuga menziesii, Pinus ponderosa, Abies concolor, Abies lasiocarpa</i>, and deciduous trees such as <i>Populus tremuloides</i> in mountains and <i>Populus deltoides</i> in lower foothills and on plains. <i>Populus x acuminata</i> may codominate stands in the Great Basin and in Alberta. In northern plains, stands may have <i>Populus deltoides</i> and/or <i>Populus balsamifera ssp. trichocarpa (= Populus trichocarpa)</i> present. The introduced tree <i>Elaeagnus angustifolia</i> may be common on disturbed stands. The moderately dense to dense shrub layer consists mostly of <i>Cornus sericea</i> (10-80%) but may be diverse. Other shrub species can be abundant, but rarely more than <i>Cornus sericea</i>, and may include <i>Acer glabrum, Alnus incana, Amelanchier</i> spp., <i>Crataegus rivularis, Betula occidentalis, Lonicera involucrata, Prunus virginiana, Quercus gambelii, Ribes</i> spp., <i>Rosa woodsii, Rubus</i> spp., many species of <i>Salix</i>, and <i>Symphoricarpos</i> spp. The herbaceous cover can be abundant (>50% cover) and diverse. Forb species may include <i>Equisetum arvense, Heracleum maximum, Maianthemum stellatum, Rudbeckia laciniata, Osmorhiza</i> spp., <i>Solidago canadensis</i>, and <i>Symphyotrichum foliaceum (= Aster foliaceus)</i>. Graminoid cover can also be abundant and includes <i>Bromus anomalus, Carex pellita (= Carex lanuginosa), Elymus glaucus, Glyceria striata</i>, and <i>Phalaris arundinacea</i>. Introduced species, such as <i>Agrostis gigantea, Agrostis stolonifera, Alopecurus pratensis, Bromus inermis, Cirsium arvense, Dactylis glomerata, Medicago sativa, Phleum pratense, Poa compressa, Poa palustris</i>, and <i>Poa pratensis</i>, are often abundant. |
Comm #7908
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Pinus strobus - Tsuga canadensis - Picea rubens Forest
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accession code: VB.CC.31273.CEGL006324
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Eastern Ecology Working Group of... |
0
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This dry-mesic pine - hemlock forest occurs on lower-elevation slopes and flats in northern New England. The typical setting is sheltered slopes with sandy or stony, acidic, moderately well-drained soils overlying bedrock, talus, or till. The closed coniferous canopy admits little light, and lower layers are patchy and sparse. Dense needle accumulation and dry conditions appear to further limit the growth of herbs and bryoids. The canopy is comprised of substantial <i>Pinus strobus</i>, with variable components of <i>Picea rubens</i> and <i>Tsuga canadensis</i>. Near the coast, <i>Thuja occidentalis</i> may be a canopy component. <i>Picea rubens</i> is characteristic, although it may not be abundant, and its presence indicates a cool climatic regime. Occasionally <i>Abies balsamea</i> will be present in the canopy or subcanopy. Minor deciduous associates may include <i>Quercus rubra, Acer rubrum, Betula alleghaniensis, Betula papyrifera</i>, or <i>Betula populifolia</i>. In the shrub layer, characteristic species include <i>Gaylussacia baccata, Kalmia angustifolia, Viburnum nudum var. cassinoides (= Viburnum cassinoides), Vaccinium angustifolium, Vaccinium myrtilloides</i>, or, less commonly, <i>Comptonia peregrina, Diervilla lonicera, Nemopanthus mucronatus</i>, or <i>Rubus hispidus</i>. Characteristic herb species include <i>Pteridium aquilinum, Polypodium virginianum, Aralia nudicaulis, Maianthemum canadense, Gaultheria procumbens, Oclemena acuminata (= Aster acuminatus), Eurybia macrophylla (= Aster macrophyllus), Cornus canadensis, Trientalis borealis</i>, and <i>Clintonia borealis</i>. The bryophyte layer often includes <i>Dicranum undulatum</i> and <i>Leucobryum glaucum</i>, and may include species of <i>Cladina</i>. |
Comm #7909
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Poliomintha incana - Artemisia filifolia - Vanclevea stylosa Shrubland
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accession code: VB.CC.31119.CEGL002418
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Western Ecology Working Group of... |
0
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This Colorado Plateau shrubland association occurs where there is loose, blowing sand on dunes, benches, sandsheets, stabilized climbing dunes on steep canyonsides and in intermittent channels on valley floors in southeastern Utah. It usually occurs in small patches within a matrix of shrublands on more stable sands and dominated by <i>Coleogyne ramosissima</i> or <i>Artemisia filifolia</i>. Stands are located on flat to moderate slopes (up to 30%) between 1271 and 1663 m (4170-5455 feet) elevation and tend to be oriented to southern or eastern aspects. The unvegetated surface has low cover of litter and moderate to high exposure of sand and bare soil. Biological soil crusts may absent or provide sparse to moderate cover, up to 25% cover. Soils are poorly developed, rapidly drained sands and sandy loams derived from eolian sands and sandy alluvium. Total vegetation cover ranges from 5 to 55% and is characterized by a mixed open canopy consisting of a combination of <i>Poliomintha incana, Artemisia filifolia</i>, and <i>Vanclevea </i><i>stylosa</i>. One of these shrubs may be absent, but at a minimum either <i>Poliomintha incana</i> or <i>Vanclevea stylosa</i> is always present. Associated shrubs commonly include <i>Atriplex canescens, Ephedra viridis, Eriogonum leptocladon, Gutierrezia sarothrae, Opuntia polyacantha</i>, and <i>Yucca harrimaniae</i>. If <i>Coleogyne ramosissima</i> is present, it is with very low cover relative to the diagnostic species. The herbaceous layer is moderate to high in terms of species diversity and typically provides sparse to low cover, except in cases where the exotic annual forb <i>Salsola tragus</i> may have up to 15% cover. <i>Achnatherum hymenoides, Aristida purpurea</i>, and <i>Muhlenbergia pungens</i> are the most consistent grasses other than the exotic annual <i>Bromus tectorum</i>. Forb composition varies greatly among stands, but species tend to be sand specialists such as <i>Abronia fragrans, Ambrosia acanthicarpa, Cryptantha crassisepala, Chamaesyce parryi (= Euphorbia parryi), Hymenopappus filifolius, Iva acerosa, Oenothera</i><i> pallida, Stephanomeria exigua</i>, and <i>Streptanthella longirostris</i>. Isolated <i>Juniperus osteosperma</i> occur in some stands where the sand is shallow over bedrock. |
Comm #7910
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CEGL003448
» more details
accession code: VB.CC.5498.CEGL003448
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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