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Comm #2651
 
Picea glauca - (Betula papyrifera) / Danthonia spicata Woodland
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accession code: urn:lsid:vegbank.org:commConcept:33959-{059FB523-04CC-4AA1-8F48-27632B18ED78}
NatureServe Biotics 2019  4 This white spruce rocky woodland occurs in localized areas of the Great Lakes region of the United States, and possibly Canada. On Isle Royale, Michigan, stands occur in high rocky ridgelines, with flat areas to steep slopes at elevations usually ranging from 200-300 m (610-900 feet). Stands sometimes occur on old beach flats or beach ridges. Soils are thin sandy, sandy loam, or organic, and well-drained to rapidly drained. The vegetation is an open-canopy evergreen woodland with variable physiognomy; canopy cover ranges from 10-60% cover. <i>Picea glauca</i> is the most abundant tree over 5 m tall; <i>Betula papyrifera</i> and <i>Populus tremuloides</i> are common associates. Shrub cover varies from about 5-50% cover of tall shrubs, from 5-60% cover of short shrubs, and from 0-60% cover of dwarf-shrubs. The most abundant tall shrubs are saplings (or browsed scrub) of <i>Picea glauca, Abies balsamea</i>, and <i>Sorbus decora</i>, as well as <i>Alnus incana</i> shrubs. The most abundant short shrubs are <i>Diervilla lonicera, Rubus parviflorus, Sambucus racemosa, Ribes glandulosum</i>, and <i>Rosa acicularis</i>. <i>Arctostaphylos uva-ursi</i> is the most abundant dwarf-shrub. Herb cover is variable, ranging from about 30-80% cover. The most abundant herbs are <i>Eurybia macrophylla, Aralia nudicaulis, Pteridium aquilinum, Cornus canadensis, Poa</i> spp., <i>Calamagrostis canadensis</i>, and <i>Deschampsia flexuosa</i>. Nonvascular cover is variable, ranging from 0-60% cover; the most abundant lichens are <i>Cladonia</i> spp. and foliose lichens; the most abundant moss is <i>Pleurozium schreberi</i>. 
Comm #2652
 
Picea mariana / Chamaedaphne calyculata / Sphagnum spp. Open Bog Woodland
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accession code: urn:lsid:vegbank.org:commConcept:33981-{AFFD8F64-AB3E-48F1-B656-AA2483C487C2}
NatureServe Biotics 2019  4 This muskeg community is found in the subboreal regions of the Great Lakes in the United States and is widespread in Canada. Sites are on the crests of raised bogs in large peatland complexes, in basin bogs, and occasionally on shores isolated from groundwater influence. Vegetation structure is complex with a dominant layer of dwarf-shrubs, stunted trees and hummock-hollow microtopography. Ericaceous dwarf-shrubs dominate the stand, with over 40% cover. Dominant species include <i>Andromeda polifolia var. glaucophylla, Chamaedaphne calyculata, Kalmia polifolia</i>, and <i>Ledum groenlandicum</i>. Creeping dwarf-shrubs include <i>Gaultheria hispidula</i> and <i>Vaccinium oxycoccos</i>. Trees average about 10-25% cover, may be stunted (3 m tall) and are often clumped on higher hummocks with intervening, weakly-developed hollows. Typical species include <i>Picea mariana</i> and <i>Larix laricina</i>. The herbaceous layer contains graminoids such as <i>Carex oligosperma, Carex pauciflora</i>, and <i>Eriophorum vaginatum</i>, and forbs such as <i>Maianthemum stellatum</i> and <i>Sarracenia purpurea</i>. The nonvascular layer contains a carpet of <i>Sphagnum</i> (including <i>Sphagnum fuscum</i> and <i>Sphagnum magellanicum</i>), with patches of <i>Pleurozium schreberi</i>. 
Comm #2653
 
Betula pumila - Alnus incana - Salix spp. / Chamaedaphne calyculata Fen
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accession code: urn:lsid:vegbank.org:commConcept:33990-{4B27BCD5-9BDD-4D24-8125-203CF3AF5C0E}
NatureServe Biotics 2019  4 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</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</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, Kalmia polifolia, Rubus arcticus ssp. 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</i>. <i>Calamagrostis canadensis, Carex chordorrhiza, Carex lasiocarpa, Eriophorum vaginatum var. 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. 
Comm #2654
 
Quercus macrocarpa / Danthonia spicata - (Geum triflorum) Limestone Open Woodland
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accession code: urn:lsid:vegbank.org:commConcept:34000-{872FF8C3-CC28-44BA-AB11-2BA437932439}
NatureServe Biotics 2019  4 This type is primarily located within Ontario on limestone/dolostone plateaus with shallow soils. These soils are deeper than those typical of alvars, but drier due to areas containing grikes and clints. Vegetation is dominated by a very open <i>Quercus macrocarpa</i> canopy (&lt;10%) with <i>Danthonia spicata</i> and <i>Geum triflorum</i> dominating the understory. It is heavily threatened by fire suppression, which is converting many areas to forest. Other areas have been converted to pasture or limestone quarry sites. Historically, this type was more prevalent along the Trent River, the Flamborough River, and on the Paleozoic Contact Line. 
Comm #2655
 
Taxus canadensis - Viburnum edule - Cornus sericea - Alnus viridis - Oplopanax horridus Shrubland
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accession code: urn:lsid:vegbank.org:commConcept:34017-{030A0F2C-D25A-494C-A419-7BB9730C4B9A}
NatureServe Biotics 2019  4 This Canada yew shrubland type occurs on Isle Royale, Michigan, and perhaps more widely in the boreal regions of the upper midwestern United States and Canada. At Isle Royale National Park, stands occupy gentle to somewhat steep slopes facing southeast, at elevations ranging from 190-200 m (613-650 feet). Soils are usually sandy loams. The vegetation contains a mix of evergreen and deciduous shrubs that forms a dense, nearly impenetrable thicket. There may be a sparse cover (0-10% cover) of trees over 5 m tall including <i>Thuja occidentalis, Abies balsamea</i>, or <i>Sorbus decora</i>. Cover of tall shrubs varies from 5-50%, the most abundant tall shrubs are <i>Abies balsamea, Sorbus decora</i>, and <i>Alnus viridis</i>. Cover of short shrubs varies from 40-90% cover; the most abundant short shrubs are <i>Taxus canadensis, Viburnum edule, Oplopanax horridus, Prunus pensylvanica, Cornus sericea</i>, and <i>Chamaedaphne calyculata</i>. Cover of dwarf-shrubs varies from 0-70%, the most abundant dwarf-shrubs are <i>Diervilla lonicera</i> and <i>Empetrum nigrum</i>. Cover of herbs varies from 10-70% cover; the most abundant herbs are <i>Lycopodium annotinum, Cornus canadensis, Dryopteris expansa</i>, and <i>Clintonia borealis</i>. Cover of nonvascular plants is usually less than 10% cover; the most abundant nonvascular plants are foliose and crustose lichens, <i>Pleurozium schreberi</i> and <i>Dicranum polysetum</i>. There is an uncommon variant of this association, <i>Abies balsamea / Taxus canadensis</i> woodland, which forms an open-canopy, evergreen woodland. This variant is only known from ridges on Passage Island; it may also occur in other areas in the northeastern end of the island. 
Comm #2656
 
Bromus inermis - (Pascopyrum smithii) Ruderal Grassland
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accession code: urn:lsid:vegbank.org:commConcept:34027-{3E033D54-B907-4823-8942-8C31260C4426}
NatureServe Biotics 2019  4 This smooth brome grassland type occurs widely throughout the northern Great Plains, in disturbed montane meadows in the Rocky Mountains, on relatively mesic sites in the semi-arid interior western United States, and perhaps more widely in the midwestern U.S. and Canada. Stands can occur in a wide variety of human-disturbed habitats, including highway rights-of-way, jeep trails, etc. The type is also widely planted for revegetating disturbed land, pasture and hay fields, and has escaped into a variety of habitats, including prairie, riparian grasslands, and mesic mountain meadows. The dominant grass is <i>Bromus inermis</i>, a naturalized species from Eurasia that forms moderately dense to dense stands that often develop into monocultures. Other weedy species such as <i>Cirsium arvense</i> and <i>Poa pratensis</i> may occur as well, but native species are generally less than 10% cover. Native species may include mixed-grass prairie and montane meadow grasses, such as <i>Pascopyrum smithii, Deschampsia cespitosa</i>, and <i>Hesperostipa comata</i>, and sparse, scattered mesic shrubs such as <i>Symphoricarpos</i> spp., as well as many others. However, the native species are not conspicuous enough to identify the native plant association that could occupy the site, or the stand would be typed as such. 
Comm #2657
 
Agropyron cristatum - (Pascopyrum smithii, Hesperostipa comata) Ruderal Grassland
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accession code: urn:lsid:vegbank.org:commConcept:34029-{FC92F917-6D7B-4872-96D0-A948793E06FD}
NatureServe Biotics 2019  4 This crested wheatgrass association occurs most commonly in the northern Great Plains of the United States and Canada. Sites are also reported from the southern Rocky Mountains and Colorado Plateau, and high plateaus of southern Utah, and it likely occurs throughout much of the semi-arid interior West. Stands occur in a wide variety of human-disturbed habitats, including highway rights-of-way, jeep trails, etc. It is also widely planted to revegetate pastures and western rangelands. The vegetation is characterized by a sparse to dense, medium-tall graminoid layer dominated by <i>Agropyron cristatum</i>, an introduced forage species from Russia and Siberia that has been planted extensively in the western United States. Other weedy species may occur as well, but native species are generally less than 10% cover. Native species may include mixed-grass prairie grasses, such as <i>Pascopyrum smithii</i> and <i>Hesperostipa comata</i>, as well as others. In the Intermountain West, native grasses <i>Poa secunda</i> and <i>Pseudoroegneria spicata</i> may be present at low cover. 
Comm #2658
 
Quercus phellos - Liquidambar styraciflua / Ilex decidua - Carpinus caroliniana / Lysimachia radicans Floodplain Forest
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accession code: urn:lsid:vegbank.org:commConcept:35616-{E98B94F2-E4CC-468F-A265-9D61B0DF08A0}
NatureServe Biotics 2019  4 This oak-sweetgum bottomland forest is found in the West Gulf Coastal Plain of Louisiana and Texas and possibly Arkansas. <i>Quercus phellos</i> strongly dominates the overstory, with <i>Liquidambar styraciflua</i>. Other canopy and subcanopy trees include <i>Quercus michauxii, Quercus pagoda, Quercus nigra, Quercus lyrata, Ostrya virginiana, Ulmus americana</i>, and <i>Nyssa sylvatica</i>. The midstory is dominated by <i>Carpinus caroliniana</i>, followed closely by <i>Fraxinus caroliniana, Ilex decidua</i>, and individuals of species present in the overstory. The understory contains species typical of bottomland habitats in the region including <i>Ditrysinia fruticosa, Campsis radicans, Justicia ovata, Bignonia capreolata, Lysimachia lanceolata, Carex louisianica, Carex tribuloides, Nekemias arborea</i>, and <i>Brunnichia ovata</i>. <i>Lysimachia radicans</i> is a frequent species in the ground layer. 
Comm #2659
 
Andropogon gerardii - Sorghastrum nutans - Pycnanthemum virginianum Grassland
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accession code: urn:lsid:vegbank.org:commConcept:34689-{15D78CBF-9CB1-42E8-B745-7474A8FDB1D1}
NatureServe Biotics 2019  4 This community type is a mesic to wet-mesic prairie of the Ridge and Valley province in western Virginia, with an outlying occurrence on the Southern Blue Ridge in Virginia. Vegetation is characterized by <i>Andropogon gerardii, Sorghastrum nutans, Pycnanthemum virginianum, Cirsium muticum</i>, and a host of low-cover associates. 
Comm #2660
 
Acer rubrum / Rhododendron viscosum - Clethra alnifolia Swamp Forest
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accession code: urn:lsid:vegbank.org:commConcept:34804-{CE1642D0-F187-46E4-9D74-C2D20E05ABF2}
NatureServe Biotics 2019  4 This red maple swamp occurs in poorly drained depressions containing acidic, tannic water without substantial nutrient input from overland flow. The core of distribution is the North Atlantic Coast and adjacent Lower New England / Northern Piedmont ecoregions. Soils are organic and hummock-hollow microtopography is evident. <i>Acer rubrum</i> dominates the canopy often with abundant <i>Nyssa sylvatica</i>. The subcanopy varies from sparse to fairly well-developed and may feature <i>Ulmus americana</i> or occasionally <i>Quercus bicolor</i>, along with additional <i>Acer rubrum</i>. The shrub layer is characterized by <i>Vaccinium corymbosum, Clethra alnifolia, Ilex verticillata, Rhododendron viscosum, Leucothoe racemosa</i>, and on the Atlantic Coastal Plain <i>Ilex glabra</i> may also be present. The herbaceous layer is not particularly diverse, characterized by <i>Osmunda cinnamomea, Symplocarpus foetidus, Carex intumescens, Osmunda regalis, Arisaema triphyllum</i>, and <i>Onoclea sensibilis</i>. <i>Sphagnum</i> mosses make up the bryophyte layer. This community is differentiated from <i>~Acer rubrum - Nyssa sylvatica - Betula alleghaniensis / Sphagnum</i> spp. Swamp Forest (CEGL006014)$$ by the absence or infrequent occurrence of <i>Tsuga canadensis, Betula alleghaniensis, Nemopanthus mucronatus, Carex trisperma, Clintonia borealis</i>, and by the presence of species with more southern affinities such as <i>Clethra alnifolia, Ilex glabra</i>, and <i>Rhododendron viscosum</i>. 

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records 2651 through 2660 of 38961

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