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Add/Drop	Name	Reference	Plots↓	Description
Comm #8351	Alnus serrulata Southeastern Seasonally Flooded Shrubland » more details accession code: VB.CC.17774.ALNUSSERRULATAS	Southeastern Ecology Working Gro...	0	This smooth alder swamp is found in the upper southeastern United States, most probably from Kentucky south to central Alabama and Georgia, and west to Mississippi. These shrublands are found on muck overlying mineral soils, at the edges of forested swamps, or in other related seasonally flooded situations, including depressions in floodplains and the backwaters of lakes and beaver ponds. Hydrologic alteration of systems (e.g., creation of impoundments by the agency of humans and/or beaver) may expand habitat for this association. The vegetation is dominated by tall shrubs, and is characterized by some combination of Alnus serrulata, Viburnum spp., Cornus spp., and Salix spp. In addition, saplings of Acer rubrum are typical. Other shrubs present may include Cephalanthus occidentalis, Decodon verticillatus, and Ilex verticillata. Herbaceous associates include Osmunda regalis, Thelypteris palustris, Galium spp., Typha latifolia, Peltandra virginica, and Carex spp. Tree species such as Acer rubrum and Juglans nigra may exist on the fringes of such an association, occasionally overshadowing parts of the association.
Comm #8352	CEGL003385 » more details accession code: VB.CC.5441.CEGL003385 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #8353	Quercus velutina - Carya (alba, glabra) / Vaccinium arboreum Forest » more details accession code: VB.CC.35231.CEGL004987	Southeastern Ecology Working Gro...	0	This dry to dry-mesic forest of the southern Interior Low Plateau is dominated by <i>Quercus velutina</i> with <i>Carya alba</i> and <i>Carya glabra</i>. Other <i>Quercus</i> species may be present in the canopy (for example <i>Quercus falcata</i> and <i>Quercus stellata</i>) as well as <i>Liquidambar styraciflua</i>. The subcanopy may contain <i>Fagus grandifolia, Juniperus virginiana var. virginiana, Sassafras albidum</i>, and <i>Liriodendron tulipifera</i>. The open tall-shrub stratum includes <i>Vaccinium arboreum</i> (which may dominate), <i>Ostrya virginiana</i>, and <i>Ilex opaca</i>. Low shrubs include <i>Vaccinium stamineum</i> and <i>Hypericum prolificum</i>. The sparse herbaceous layer contains <i>Desmodium</i> sp., <i>Chimaphila maculata, Sedum ternatum</i>, and <i>Epifagus virginiana</i>. The vines <i>Vitis rotundifolia, Toxicodendron radicans</i>, and <i>Bignonia capreolata</i> are also present.
Comm #8354	Leymus salinus Shale Sparse Vegetation » more details accession code: VB.CC.24600.LEYMUSSALINUSSH	Western Ecology Working Group of...	0
Comm #8355	A.1645 » more details accession code: VB.CC.1400.A1645 NOT CURRENTLY ACCEPTED	EcoArt 2002	0	This alliance occurs in the alpine tundra throughout the Rocky Mountains. In winter, strong westerly winds deposit snow on the leeward side of the mountains, resulting in areas of deep snow that melt relatively late in the summer. Stands are found in these snowbed habitats on frost-patterned ground, and in depressions where fine soil particles concentrate. Sites occur on all aspects of gentle to moderate-gradient slopes. The soils are wet, poorly developed, and may have a high organic matter content. Vegetation included in this alliance is characterized by the perennial forb ~Geum rossii$ dominating the herbaceous layer. Common associates include ~Polygonum bistortoides, Trifolium parryi, Trifolium nanum, Artemisia scopulorum, Erigeron simplex, Potentilla diversifolia, Deschampsia caespitosa$, and ~Festuca brachyphylla$. The moss layer is sparse due to the dense herbaceous cover and ~Geum rossii$ litter that covers the ground. Diagnostic of this alpine alliance is the dominance of ~Geum rossii$ in the herbaceous layer.
Comm #8356	Populus tremuloides / Corylus spp. / Andropogon gerardii Woodland » more details accession code: VB.CC.20176.POPULUSTREMULOI	Midwestern Ecology Working Group...	0	This aspen woodland type is found in the aspen parkland region of the upper midwestern United States and adjacent Canada. Stands occur on level to rolling terrain. Soils are typically wet-mesic, but may range to dry-mesic. The canopy is open, and may either be somewhat dense with even-aged immature trees, have an irregular canopy of young and old trees, or have tall, even canopies of mature trees. The dominant canopy species is Populus tremuloides. In places Populus grandidentata and Populus balsamifera may dominate. Quercus macrocarpa, if present, is less than 20% cover. Ulmus americana is often present as small individuals, and Fraxinus pennsylvanica is sometimes present as an invader. The shrub/sapling layer is usually well-developed. Species present on drier sites include Amelanchier alnifolia, Corylus americana, Cornus foemina, Prunus virginiana, Rosa spp., and Rubus spp. On wetter sites, species include Betula pumila, Cornus sericea, Salix bebbiana, and Spiraea alba.
Comm #8357	CEGL002034 » more details accession code: VB.CC.4581.CEGL002034 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #8358	A.849 » more details accession code: VB.CC.2477.A849	EcoArt 2002	0
Comm #8359	Sideroxylon foetidissimum - Sideroxylon salicifolium - Ficus aurea - Quercus virginiana - Celtis laevigata Forest » more details accession code: VB.CC.22138.SIDEROXYLONFOET	Southeastern Ecology Working Gro...	0	This hardwood hammock community occurs on Indian middens in southern Florida. These forests are closely related to other hardwood hammocks of the region but may be differentiated most easily by their occurrence on anthropogenic midden piles. Because these middens are topographically higher than the surrounding landscape, they apparently lack a true hydroperiod and consequently develop larger trees than some other hammocks. Many of the nominal species may also be encountered in inland hammocks of the region. Perhaps the most distinctive vegetation feature of these stands is the persistence of species cultivated by the aboriginal inhabitants.
Comm #8360	Pinus resinosa / Gaylussacia baccata - Vaccinium angustifolium Woodland » more details accession code: VB.CC.26878.PINUSRESINOSAGA	Eastern Ecology Working Group of...	0	This red pine - heath woodland is scattered across the glaciated regions of the northeastern United States (and possibly adjacent Canada). Usually found on bedrock outcrops or mid-elevation ridges and summits, it can also occur on steep, excessively drained glacial deposits such as eskers and deltas. Elevations of known examples range from 500-2700 feet; most are at 1000-2400 feet. The soils are dry, acidic, and nutrient-poor; on outcrops, soil development is restricted to crevices or sheltered areas interspersed with significant amounts of exposed bedrock. Most if not all sites have a history of fire. Scattered conifers form a partial canopy over a patchy, but locally extensive, heath-forb understory. The bryoid layer may be extensive, with lichens generally more abundant than bryophytes. Pinus resinosa dominates the canopy. Associates at lower elevations include Quercus rubra, Pinus strobus, and Acer rubrum; as elevation increases above about 2000 feet, the common associates become Picea rubens, Betula papyrifera var. papyrifera, Betula papyrifera var. cordifolia, and Abies balsamea. Scattered shrubs include Sorbus americana, Viburnum nudum var. cassinoides, Acer pensylvanicum, Nemopanthus mucronatus, Photinia melanocarpa (= Aronia melanocarpa), or Amelanchier spp. The low heath layer is characteristically well-developed, and typical species include Vaccinium angustifolium, Vaccinium myrtilloides, Vaccinium pallidum, Gaylussacia baccata, Kalmia angustifolia, and, at higher elevations, Diervilla lonicera. Herbs, less abundant than the dwarf-shrubs, include graminoids such as Deschampsia flexuosa, Danthonia spicata, and Carex lucorum; Pteridium aquilinum as a typical fern; and forbs such as Sibbaldiopsis tridentata, Solidago simplex var. randii, Corydalis sempervirens, Epigaea repens, Maianthemum canadense, Aralia nudicaulis, and Gaultheria procumbens. Rock outcrops have abundant mosses (Grimmia spp. and others) and lichens (Cladina spp.). The ground cover is sparse needle litter and exposed bedrock. Red pine is fire-resistant, and fire appears be important in maintaining its dominance at some sites. In the absence of fire, the associated spruces, white pines, and hardwoods tend to become more abundant. The open red pine canopy and well-developed dwarf-shrub layer dominated by heaths are diagnostic features of this association.