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Add/Drop	Name	Reference	Plots↓	Description
Comm #6801	Pinus sabiniana - Quercus wislizeni / Arctostaphylos viscida Woodland » more details accession code: VB.CC.22182.PINUSSABINIANAQ	Western Ecology Working Group of...	0
Comm #6802	Great Plains Riverine Gravel Flats Sparse Vegetation » more details accession code: VB.CC.36611.CEGL005223	Midwestern Ecology Working Group...	0	This riverine gravel flats community is found in the central Great Plains of the United States. Stands occur along major rivers where gravel has been deposited on the first terraces of rivers. The substrate consists of a mixture of gravel and some sand, and soils are poorly developed or absent. Sites can occasionally be flooded in spring. Vegetation is sparse and often consists of nearly equal cover of annual grasses and annual or biennial forbs under 1 m tall. <i>Sporobolus cryptandrus</i> and <i>Artemisia campestris ssp. caudata</i> are conspicuous. In some sites, <i>Populus deltoides</i> may be scattered to woodland-like in structure. Shrubs are also scattered and uncommon, with <i>Amorpha fruticosa</i> the most frequent. Other herbaceous species that can occur include <i>Ambrosia artemisiifolia, Chamaesyce glyptosperma, Chamaesyce serpyllifolia, Froelichia gracilis, Helianthus petiolaris, Opuntia macrorhiza</i>, and <i>Triplasis purpurea</i>.
Comm #6803	Pinus strobus - Picea glauca - Betula papyrifera Sub-Boreal Forest » more details accession code: VB.CC.36581.CEGL005224	Midwestern Ecology Working Group...	0	These sub-boreal conifer - northern hardwood forests are found in the eastern cool temperate forest region, ranging from north-central Minnesota, Wisconsin and Michigan through central Ontario to eastern Canada. Stands are dominated by <i>Pinus strobus</i> and <i>Picea glauca</i>, often with <i>Betula papyrifera</i>, and with a prominent mix of northern hardwoods, such as <i>Acer rubrum, Acer saccharum, </i><i>Populus grandidentata</i>, and <i>Prunus serotina</i>, along with the boreal hardwoods <i>Populus tremuloides</i> and <i>Betula papyrifera</i>. Other conifers include <i>Thuja occidentalis</i>. The shrub and herb layers are variable, decreasing as the percent conifer cover increases. Common shrub species include <i>Acer spicatum, Amelanchier</i> spp., <i>Corylus cornuta, Diervilla lonicera, Lonicera canadensis</i>, and <i>Prunus virginiana</i>. The moss layer ranges from discontinuous to continuous. These upland forests typically occur on mesic to wet-mesic (moist) sites, most commonly level, clayey sites, and sites with high local water tables on glacial lake deposits, stagnation moraines and tillplains. Wetter sites may contain <i>Alnus incana ssp. rugosa, Calamagrostis canadensis</i>, and <i>Equisetum</i> spp.
Comm #6804	Caltha palustris - Impatiens capensis - Viola cucullata Herbaceous Vegetation » more details accession code: VB.CC.31034.CEGL006258 NOT CURRENTLY ACCEPTED	Eastern Ecology Working Group of...	0	This community is a saturated, herbaceous, small-patch wetland occurring on relatively steep, usually gravelly or bouldery slopes at sites of groundwater discharge. The type is probably scattered in the northern Blue Ridge and parts of the Ridge and Valley province, in areas underlain by base-rich metamorphic, igneous, or sedimentary rocks. Occurrences are more common at, but not restricted to, elevations above 760 m (2500 feet) elevation. Habitats are typically narrow and partially or wholly shaded by tree species rooted in adjacent upland forests. A few occurrences encompass larger spring seeps that may have resulted from the clearing of forested seepage swamps. Vegetation is similar to the herbaceous component of forested seepage swamps but is usually more forb-rich. Characteristic species include <i>Caltha palustris, Impatiens capensis, Viola cucullata, Chelone glabra, Pilea pumila, Chrysosplenium americanum, Lycopus virginicus, Lycopus uniflorus, Packera aurea (= Senecio aureus), Veratrum viride, Laportea canadensis</i>, and <i>Carex gynandra</i>.
Comm #6805	CEGL007569 » more details accession code: VB.CC.7182.CEGL007569	EcoArt 2002	0
Comm #6806	Larix laricina / Chamaedaphne calyculata / Carex lasiocarpa Shrubland » more details accession code: VB.CC.37012.CEGL005226	Midwestern Ecology Working Group...	0	This tamarack / ericaceous scrub poor fen is found in the northern Great Lakes region of the United States and into central Canada. Stands occur on peatlands with low exposure to minerotrophic groundwater including basin fens, shores above the level of the seasonal flooding, and larger peatlands. The water regime is saturated, and the substrate is fibric to mesic peat. The microtopography is low to intermediate hummocks with hollows. The vegetation is an open fen dominated by ericaceous shrubs, sedges, and <i>Sphagnum</i> spp. The scattered tree layer of <i>Larix laricina</i> and <i>Picea mariana</i> >2 m is less than 10%. The low-shrub layer is dominated by <i>Betula pumila, Chamaedaphne calyculata, Larix laricina, Salix discolor</i>, and <i>Salix pedicellaris</i>. The herb layer is somewhat low in diversity, with graminoids including the dominant <i>Carex lasiocarpa</i>, as well as <i>Carex chordorrhiza</i> and <i>Carex limosa</i>. <i>Carex oligosperma</i> may also occur. Forbs include <i>Sarracenia purpurea, Maianthemum trifolium</i>, and <i>Menyanthes trifoliata</i>. Mosses include <i>Sphagnum capillifolium, Sphagnum fuscum</i> and <i>Sphagnum magellanicum</i>. Diagnostic features include the ericaceous and tree scrub cover, the somewhat lower species diversity compared to richer fens, and <i>Carex lasiocarpa</i> more common than <i>Carex oligosperma</i>.
Comm #6807	Carex spp. - (Carex pellita, Carex vulpinoidea) Herbaceous Vegetation » more details accession code: VB.CC.37067.CEGL005272	Midwestern Ecology Working Group...	0	This sedge wet meadow type is found in the central midwestern United States. Stands occur on nearly level floodplains, often in bands surrounding channels, or in basins. Soils are poorly drained silty and clay loams formed in alluvium. Stands are flooded for much of the growing season, but may dry out in late summer. The vegetation cover is quite dense and may be patchy. The structure is dominated by graminoids 0.5-1.5 m tall. Typical species include <i>Carex cristatella, Carex molesta, Carex pellita (= Carex lanuginosa), Carex stipata, Carex tribuloides</i>, and <i>Carex vulpinoidea</i> (a dominant in southeast Nebraska meadows). Other frequent emergent graminoids include <i>Eleocharis</i> spp., <i>Juncus interior, Juncus torreyi</i> and <i>Scirpus atrovirens</i>. <i>Leersia oryzoides</i> may be common where the stand borders a marsh. Forbs are common and may be conspicuous. Among the more common are <i>Apocynum cannabinum, Symphyotrichum lanceolatum (= Aster lanceolatus), Lycopus americanus, Lythrum alatum</i>, and <i>Verbena hastata</i>. <i>Phalaris arundinacea</i> may invade this community to the point of excluding many of the native species.
Comm #6808	Betula papyrifera - Picea glauca / Acer spicatum - Alnus viridis / Polypodium virginianum Talus Shrubland » more details accession code: VB.CC.37087.CEGL005252 NOT CURRENTLY ACCEPTED	Midwestern Ecology Working Group...	0	This paper birch - white spruce talus scrub shrubland is found in the northern Great Lakes region of the United States and Canada. The following description is based on its occurrence at Isle Royale National Park, Michigan. This community occupies steep to very steep talus slopes at the base of basalt cliffs facing northwest. This talus scrub type is an open canopy, mixed evergreen and deciduous shrubland. Stands occur on steep to very steep talus slopes at the base of basalt cliffs facing northwest. Canopy cover of trees over 5 m tall is typically 30-50% cover. The most abundant trees are <i>Betula papyrifera</i> and <i>Picea glauca</i>. Cover of tall shrubs varies from 10-70% cover; the most abundant tall shrubs are <i>Acer spicatum</i> and <i>Alnus viridis</i>. Cover of short shrubs (including dwarf-shrubs) varies from 5-40%; the most abundant low shrubs are <i>Taxus canadensis</i> and <i>Rubus pubescens</i>. Herbs usually have about 30-40% cover; the most abundant herbs are <i>Polypodium virginianum</i> and <i>Dryopteris expansa</i>. Cover of nonvascular plants is usually about 30-40%; mosses, such as <i>Pleurozium schreberi</i> and foliose lichens are common in the ground layer.
Comm #6809	CEGL001543 » more details accession code: VB.CC.4115.CEGL001543 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #6810	Betula pumila - Alnus incana - Salix spp. / Chamaedaphne calyculata Shrubland » more details accession code: VB.CC.37138.CEGL005227	Midwestern Ecology Working Group...	0	This bog birch - willow shore fen is found in the northern regions of the midwestern and possibly northeastern United States and in central Canada. Stands occur most commonly along the minerotrophic margins of confined basin peatlands, associated with peatland lakeshore complexes or on "lagg" zones at edges of peatlands where periodic exposure to flooding occurs from groundwater runoff. The substrate is deep fibric to mesic peat. The water regime is saturated to seasonally flooded. Hummock-and-hollow microtopography is well-developed. The shrub layer of this type is dominated by <i>Betula pumila var. glandulifera (= Betula glandulifera)</i>, with <i>Alnus incana</i> and <i>Salix</i> spp. as codominants (including <i>Salix pyrifolia, Salix planifolia, Salix pedicellaris</i>, and <i>Salix petiolaris</i>). Other less constant tall shrubs include <i>Cornus sericea (= Cornus stolonifera)</i> and <i>Rhamnus alnifolia</i>. Shrubs are typically 1.5-3 m tall and coverage ranges from 30-80%. <i>Chamaedaphne calyculata</i> dominates the dwarf-shrub layer, with lesser amounts of <i>Ledum groenlandicum, Andromeda polifolia var. glaucophylla (= Andromeda glaucophylla), Kalmia polifolia, Rubus arcticus ssp. acaulis (= Rubus acaulis), Rubus idaeus</i>, and <i>Rubus pubescens</i>. Cover of these dwarf-shrubs is typically 60-90%. Often being shaded out by this dense dwarf-shrub layer, the cover of herbaceous plants is variable (20-60%). The most abundant species are <i>Carex lacustris, Carex leptalea, Carex rostrata, Carex trisperma, Maianthemum trifolium</i>, and <i>Comarum palustre (= Potentilla palustris)</i>. <i>Calamagrostis canadensis, Carex chordorrhiza, Carex lasiocarpa, Eriophorum vaginatum var. spissum (= Eriophorum spissum)</i>, and <i>Viola</i> spp. are also common at low density. The nonvascular stratum in northern Minnesota is dominated by <i>Sphagnum magellanicum, Sphagnum angustifolium, Sphagnum centrale, Sphagnum girgensohnii</i>, and <i>Sphagnum fallax</i>. These species typically comprise 90-100% cover.