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Reference
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Description |
Comm #7851
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Arctostaphylos glandulosa Shrubland Alliance
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accession code: VB.CC.20171.ARCTOSTAPHYLOSG
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Western Ecology Working Group of... |
0
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The Arctostaphylos glandulosa Shrubland Alliance (A.757) of California is found on north-facing slopes, outcrops, and ridges on shallow soils. Occurrences range in elevation from 300-2200 m. This alliance often follows disturbance, growing on sites that have been burned, logged, or otherwise disturbed. Arctostaphylos glandulosa dominates this alliance. Six subspecies of Arctostaphylos glandulosa are recognized by the Jepson Manual, any of which may occur in this alliance. Other shrubs present often include Arctostaphylos glauca, Adenostoma fasciculatum, Ceanothus leucodermis, Yucca whipplei, Baccharis pilularis, Quercus wislizeni, Quercus dumosa, Rhus ovata, and Heteromeles arbutifolia. Emergent Pinus coulteri may be present. |
Comm #7852
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Pinus strobus - Pinus resinosa / Cornus canadensis Forest
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accession code: VB.CC.31281.CEGL006253
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Eastern Ecology Working Group of... |
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This dry pine forest is scattered across northern New England, New York, and adjacent Canada on very well-drained, coarse-textured, acidic soils. Substrates include sand and gravel deposits on flats, such as outwash sands, delta sands, eskers, kames, kame terraces, and dry lake sands. They also occur on upper hillslopes and low ridges, with shallow-to-bedrock soils. The canopy closure is usually 70-90%; shrubs are sparse, and the herb and bryoid layers are patchy, with overall cover generally well under 20% and often virtually absent. Needle accumulation and dry conditions are factors in the limited understory growth. The canopy is dominated by <i>Pinus strobus</i> and <i>Pinus resinosa</i>, with scattered minor associates including <i>Quercus rubra, Betula alleghaniensis, Abies balsamea, Picea rubens, Thuja occidentalis</i> (near the coast), and <i>Acer rubrum</i>. Shrubs include <i>Kalmia angustifolia, Viburnum nudum var. cassinoides (= Viburnum cassinoides), Vaccinium angustifolium, Vaccinium myrtilloides, Gaylussacia baccata, Amelanchier canadensis</i>, and <i>Acer pensylvanicum</i>. Characteristic herbs include <i>Pteridium aquilinum, Oryzopsis asperifolia, Mitchella repens, Maianthemum canadense, Gaultheria procumbens, Cornus canadensis, Trientalis borealis</i>, and <i>Clintonia borealis</i>. Where mosses occur, typical species include <i>Dicranum polysetum, Dicranum undulatum, Polytrichum juniperinum, Pleurozium schreberi</i>, and <i>Brachythecium</i> spp. This community probably requires periodic fires for maintenance. |
Comm #7853
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Carya glabra - Tilia americana var. caroliniana - Acer barbatum / Trillium maculatum Forest
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accession code: VB.CC.18356.CARYAGLABRATILI
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Southeastern Ecology Working Gro... |
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This association is a mesic to dry-mesic forest occurring on calcareous or other base-rich or circumneutral soils in the Coastal Plain of South Carolina and possibly adjacent states. Stands are dominated by a mixture of calciphilic deciduous trees, including Acer barbatum, Carya glabra, Celtis laevigata, Fraxinus americana, Quercus pagoda, Quercus shumardii, Tilia americana var. caroliniana, Ulmus americana, and Ulmus rubra. Calciphilic small trees, shrubs, and herbs dominate, including such species as Aesculus pavia var. pavia, Arundinaria gigantea, Carex basiantha, Carex godfreyi, Cercis canadensis, Cornus asperifolia, Dichanthelium boscii, Elytraria caroliniensis, Fleischmannia incarnata (= Eupatorium incarnatum), Frangula caroliniana, Morus rubra, Ostrya virginiana, Rhapidophyllum hystrix, Sabal minor, Sanicula canadensis var. canadensis (= Sanicula canadensis var. floridana), Smallanthus uvedalius, and Trillium maculatum. This association is currently broadly defined and needs additional information. |
Comm #7854
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Betula pumila - Toxicodendron vernix - Dasiphora fruticosa ssp. floribunda Shrubland
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accession code: VB.CC.31380.CEGL006360
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Eastern Ecology Working Group of... |
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This shrub fen association is characterized by a dense mixture of 1.5-2 m tall shrubs in deep muck, often in standing water 6 inches or more deep, in limestone regions of Lower New England / Northern Piedmont. It receives regular inundation and surface flooding. This association is most typically found on lakeshores but may also be found at streamsides. Characteristic shrubs are <i>Betula pumila, Salix candida, Toxicodendron vernix, Rosa palustris, Alnus incana, Alnus serrulata, Viburnum dentatum, Viburnum nudum, Viburnum lentago, Viburnum opulus var. americanum (= Viburnum trilobum)</i>, as well as <i>Dasiphora fruticosa ssp. floribunda (= Pentaphylloides floribunda)</i>, which reaches 1 m in height. Herbaceous associates are few and sparsely distributed, and include <i>Galium trifidum, Carex stricta, Carex lacustris, Calamagrostis canadensis, Campanula aparinoides</i>, and <i>Lysimachia thyrsiflora</i>. Scattered individuals of <i>Acer rubrum</i> saplings are also typical. |
Comm #7855
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Alaska Arctic Marine Beach and Beach Meadow
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accession code: urn:lsid:ecoobs.vegbank.org:commConcept:8978-{03B39461-EDC8-417D-AAC6-A9A467F82F42}
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Western Ecology Working Group of... |
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Comm #7856
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Liriodendron tulipifera - Platanus occidentalis - Betula lenta / Lindera benzoin / Circaea lutetiana ssp. canadensis Forest
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accession code: VB.CC.31036.CEGL006255
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Eastern Ecology Working Group of... |
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This community type occupies montane alluvial floodplains along more-or-less high-gradient streams and small rivers at the foot of the Blue Ridge in Virginia and Maryland. It appears to be confined to floodplains with relatively fertile alluvial deposits derived from metabasalt (greenstone), pyroxene-rich granites, or metasiltstone/phyllite. These habitats are typically narrow, nearly flat, and have complex, coarse, bouldery or cobbly microtopography and rocky streambeds. Soils are well-drained and moderately fertile. Most of the lower streamside terraces are probably flooded briefly at least annually. Larger floods are rare. However, periodic catastrophic floods associated with hurricanes or exceptionally large rainfall events may be very destructive to stream channels and vegetation. Many of these sites were probably cleared and/or subjected to multiple historical disturbances, including grazing and cultivation . This forest is composed primarily of mesophytic upland species with some admixture of species characteristic of alluvial and wetland habitats. Vegetation is generally species-rich and heterogeneous, with composition frequently shifting in association with microhabitat conditions and disturbance histories. The overstory typically contains many tree species. However, <i>Liriodendron tulipifera</i> is generally a constant codominant, while <i>Platanus occidentalis</i> is usually scattered and occasionally abundant. Other species that are important in some stands include <i>Acer negundo, Acer rubrum, Acer saccharum, Betula alleghaniensis, Betula lenta, Betula nigra, Carya cordiformis, Carya ovata, Fagus grandifolia, Fraxinus americana, Fraxinus pennsylvanica, Juglans nigra, Nyssa sylvatica, Quercus alba, Quercus prinus, Quercus rubra, Tilia americana, Tsuga canadensis, Ulmus americana</i>, and <i>Ulmus rubra</i>. The understory contains saplings of the overstory species, along with <i>Asimina triloba, Carpinus caroliniana, Cornus florida, Corylus</i> spp., <i>Hamamelis virginiana, Lindera benzoin, Ostrya virginiana</i>, and <i>Viburnum prunifolium</i>. The herb layer is very diverse and dominated by numerous upland mesophytic species. Wet microhabitats typically support <i>Impatiens capensis, Carex intumescens, Carex tribuloides, Glyceria striata, Thalictrum pubescens, Viola cucullata</i>, and few other wetland plants. |
Comm #7857
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Trichophorum caespitosum - Gaylussacia dumosa / Sphagnum (fuscum, rubellum, magellanicum) Herbaceous Vegetation
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accession code: VB.CC.31195.CEGL006260
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Eastern Ecology Working Group of... |
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This is the sedge-dominated, ombrotrophic, coastal bog community of northern New England and adjacent Canadian maritime provinces. It occurs on the central, raised, relatively drier portions of maritime peatlands. The substrate is <i>Sphagnum</i> peat, usually saturated, and is acidic, around pH 4.5. Trees and shrubs are absent to sparse; dwarf-shrub cover is variable, from sparse to (rarely) over 80%. Even where dwarf-shrubs are abundant, however, their short stature allows the sedge lawns to visually dominate the vegetation. The bryoid layer is continuous. The peatland "lawns" are characterized by abundant <i>Trichophorum caespitosum (= Scirpus cespitosus)</i>. Scattered low shrubs include <i>Gaylussacia dumosa</i> and <i>Chamaedaphne calyculata</i>, as well as occasional <i>Kalmia angustifolia, Kalmia polifolia, Vaccinium oxycoccos, Andromeda polifolia var. glaucophylla (= Andromeda glaucophylla), Ledum groenlandicum, Rubus chamaemorus</i>, and <i>Empetrum nigrum</i>. Other associates include <i>Eriophorum vaginatum var. spissum, Arethusa bulbosa, Calopogon tuberosus, Drosera rotundifolia</i>, and <i>Solidago uliginosa</i>. The bryophyte layer is dominated by <i>Sphagnum rubellum (= Sphagnum capillifolium var. tenellum)</i> and <i>Sphagnum fuscum</i>, as well as <i>Sphagnum magellanicum</i> and <i>Sphagnum flavicomans</i>. Fruticose lichens characterize and distinguish this association and include <i>Cladina rangiferina (= Cladonia rangiferina), Cladina mitis (= Cladonia mitis), Cladina arbuscula (= Cladonia arbuscula), Cladina terrae-novae (= Cladonia terra-novae), Cladonia uncialis</i>, and <i>Cladonia crispata</i>. Diagnostic characters for this association are its location in maritime peatlands and the relative abundance of <i>Trichophorum caespitosum</i> with other peatland plants. <i>Empetrum nigrum</i> and <i>Rubus chamaemorus</i> are also good indicators. |
Comm #7858
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CEGL007885
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accession code: VB.CC.7471.CEGL007885
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7859
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CEGL005243
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accession code: VB.CC.6554.CEGL005243
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7860
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CEGL003763
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accession code: VB.CC.5628.CEGL003763
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EcoArt 2002 |
0
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