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Reference
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Description |
Comm #7201
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CEGL003839
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accession code: VB.CC.5677.CEGL003839
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7202
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Acer rubrum - Prunus serotina / Cornus amomum Forest
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accession code: VB.CC.31053.CEGL006503
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Eastern Ecology Working Group of... |
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These floodplain forests dominated by <i>Acer rubrum</i> are found on smaller rivers and large streams in the northeastern United States. They are characteristic of small to moderate watersheds. The soils are alluvial loams to silt loams, temporarily inundated during spring floods, and often imperfectly drained. There may be a limited organic horizon, but the soils are predominantly mineral and acidic. The forest can range from closed-canopy to woodland structure. Shrub cover is generally moderate, and may be locally high in patches. Herbs are often abundant, with ferns particularly characteristic. Bryophytes are minor. <i>Acer rubrum</i> is the dominant tree; associated woody and herbaceous species can vary somewhat depending on elevation within the floodplain. <i>Ulmus americana</i> is typical of the lowest floodplain elevations, <i>Prunus serotina</i> and <i>Carpinus caroliniana</i> of the middle elevations, and <i>Quercus rubra</i> and <i>Pinus strobus</i> of the higher elevations, grading to upland forest. Characteristic shrubs include <i>Carpinus caroliniana, Cornus amomum, Viburnum</i> spp., and <i>Ilex verticillata</i>. <i>Toxicodendron radicans</i> and <i>Vitis labrusca</i> are common vines. The most abundant herbs are the ferns <i>Onoclea sensibilis, Osmunda regalis, Osmunda cinnamomea, Osmunda claytoniana</i>, and <i>Athyrium filix-femina</i>. Other herbs include <i>Boehmeria cylindrica, Arisaema triphyllum, Cinna latifolia, Galium asprellum, Impatiens capensis</i>, and <i>Doellingeria umbellata (= Aster umbellatus)</i>. This type differs from most other deciduous floodplain forests in its dominance by <i>Acer rubrum</i>; it differs from the more northerly ~<i>Acer rubrum - Abies balsamea / Viburnum nudum var. cassinoides</i> Floodplain Forest (CEGL006501)$$ by the presence of more temperate species such as <i>Carpinus caroliniana</i> and <i>Cornus amomum</i> and the absence or low importance of <i>Abies balsamea</i>. It differs from red maple swamps in non-floodplain settings by its alluvial, mineral soils with poor horizon development and the presence of floodplain species such as <i>Cornus amomum, Boehmeria cylindrica, Prunus serotina</i>, and <i>Parthenocissus</i> spp. |
Comm #7203
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Picea rubens - Abies balsamea - Betula spp. - Acer rubrum Forest
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accession code: VB.CC.37367.CEGL006505
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This association is a mixed forest of northern New England and New York in which the typical spruce and fir are mixed with earlier successional species. This forest occurs at various landscape positions and aspects but in general is more common on gentle to moderate slopes and low flats. Soils are loamy to sandy till and, in general, are deeper than those of pure spruce-fir forests. The canopy is more-or-less closed, and the cover of the lower layers is variable, but rarely extensive. The boreal conifers <i>Picea rubens</i> and/or <i>Abies balsamea</i> form a mixed canopy with <i>Acer rubrum</i> and other trees such as <i>Populus tremuloides, Populus grandidentata, Betula papyrifera, Thuja occidentalis</i>, or <i>Pinus strobus</i>. Less common associates include <i>Quercus rubra, Acer saccharum, Betula alleghaniensis, Picea glauca</i>, or <i>Prunus serotina</i>. The subcanopy and shrub layers are comprised of <i>Picea rubens, Abies balsamea</i>, and <i>Acer pensylvanicum</i>. Dwarf-shrubs are usually absent or sparse; <i>Vaccinium angustifolium</i> or <i>Vaccinium myrtilloides</i> are typical species. The herbaceous layer is dominated by tree seedlings with herbs including <i>Pteridium aquilinum, Trientalis borealis, Cornus canadensis</i>, and <i>Maianthemum canadense</i>. In wetter spots, <i>Osmunda cinnamomea</i> and <i>Symplocarpus foetidus</i> (the latter usually only at near-coastal sites) may also be present. The bryophyte layer includes <i>Bazzania trilobata, Dicranum polysetum, Leucobryum glaucum, Hypnum imponens, Pleurozium schreberi</i>, and <i>Sphagnum girgensohnii</i>. This association has a mixed canopy, in contrast to the ecologically similar ~<i>Picea rubens - Abies balsamea - Betula papyrifera</i> Forest (CEGL006273)$$. It can have relatively deeper soils than ~<i>Betula alleghaniensis - Picea rubens / Dryopteris campyloptera</i> Forest (CEGL006267)$$, and usually lacks any appreciable amount of yellow birch. |
Comm #7204
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Penstemon hirsutus Sparse Vegetation
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accession code: VB.CC.30993.CEGL006535
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Eastern Ecology Working Group of... |
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This association consists of sparse, mostly herbaceous vegetation occurring on harsh, steep, unstable shale talus and cliffs. Heat, drought and lack of soil development prevent the establishment of many species and limit the community to small crevice-rooting plants such as <i>Woodsia obtusa, Woodsia ilvensis, Penstemon hirsutus, Geranium robertianum, Cyperus lupulinus (= Cyperus filiculmis), Schizachyrium scoparium, Dichanthelium linearifolium (= Panicum linearifolium)</i>, and <i>Carex pensylvanica</i>. Scrubby <i>Juniperus virginiana</i> is also typical of this community. |
Comm #7205
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Rhododendron canadense - Chamaedaphne calyculata Dwarf-shrubland
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accession code: VB.CC.31286.CEGL006514
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Eastern Ecology Working Group of... |
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These open dwarf-shrub bogs are associated with peatlands in the northeastern U.S. and adjacent Canada. Though highly acidic (pH usually in the range of 3.8-4.6), they occur in oligotrophic to weakly minerotrophic conditions, such as on the sideslopes of a raised bog formation or along the margins of water tracks. The somewhat higher nutrient status compared to ombrotrophic bog communities is reflected in the abundance of <i>Rhododendron canadense</i>; in some areas, <i>Myrica gale</i> is also present, also indicating weak minerotrophy. The structure of this association is primarily dwarf-shrubs of 0.5-0.8 m tall forming a fairly uniform layer. Graminoids and forbs are sparse. The bryoid layer is essentially continuous, with some development of hummocks and hollows. <i>Chamaedaphne calyculata</i> and <i>Rhododendron canadense</i> are the dominant shrubs, with lesser contributions from <i>Myrica gale, Kalmia angustifolia, Kalmia polifolia</i>, and <i>Ledum groenlandicum</i>. <i>Eriophorum virginicum</i> is a characteristic sedge; others include <i>Eriophorum vaginatum var. spissum</i> and <i>Carex pauciflora</i>. <i>Drosera rotundifolia</i> is often present on the surface of the bryophyte layer. Prominent <i>Sphagnum</i> spp. are <i>Sphagnum magellanicum, Sphagnum recurvum</i>, and <i>Sphagnum capillifolium</i>; <i>Sphagnum fuscum</i> may be present but is less abundant than in more ombrotrophic associations (cf. CEGL006225). This association is intermediate in nutrient status and wetness between the drier ombrotrophic dwarf-shrub bog type ~<i>Kalmia angustifolia - Chamaedaphne calyculata - (Picea mariana) / Cladina</i> spp. Dwarf-shrubland (CEGL006225)$$ and the wetter poor fen type ~<i>Chamaedaphne calyculata / Eriophorum virginicum / Sphagnum rubellum</i> Dwarf-shrubland (CEGL006513)$$. The presence of <i>Rhododendron canadense</i> (and sometimes <i>Myrica gale</i> or <i>Carex stricta</i>) in an otherwise typical raised dwarf-shrub bog community is diagnostic. |
Comm #7206
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CEGL002152
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accession code: VB.CC.4681.CEGL002152
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7207
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CEGL006053
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accession code: VB.CC.6633.CEGL006053
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7208
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Bigelowia nuttallii - Aristida dichotoma - Houstonia rosea / Cladonia spp. Grassland
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accession code: urn:lsid:vegbank.org:commConcept:33107-{7E7132CD-E20C-463F-8983-253D2C2BED8E}
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NatureServe Biotics 2019 |
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This community is a saline prairie associated with high sodium substrates, possibly associated with inland salt domes, in the West Gulf Coastal Plain of Louisiana, Texas, and Arkansas. Vegetation is patchy, with much bare soil. The location of these bare soil areas, called "slicks" in Arkansas, is variable through time. <i>Aristida dichotoma</i> is dominant in this community. Typical species include <i>Bigelowia nuttallii, Minuartia muscorum, Nothoscordum bivalve, Tradescantia occidentalis, Houstonia rosea, Houstonia micrantha, Houstonia pusilla, Oenothera linifolia, Isolepis carinata, Schizachyrium scoparium var. scoparium, Sporobolus pyramidatus, Lepuropetalon spathulatum, Neptunia lutea, Krigia occidentalis, Plantago</i> sp., <i>Coreopsis tinctoria, Geocarpon minimum, Anemone caroliniana, Polypremum procumbens, Hedeoma hispida, Aristida dichotoma, Anagallis minima, Spergularia echinosperma, Schoenolirion wrightii, Phemeranthus parviflorus, Hordeum pusillum, Drosera brevifolia, Mimosa strigillosa, Ophioglossum crotalophoroides</i>, and <i>Callirhoe papaver</i>. |
Comm #7209
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Festuca idahoensis - Eriogonum caespitosum Herbaceous Vegetation
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accession code: VB.CC.33691.CEGL001615
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Western Ecology Working Group of... |
0
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This association is described from alpine slopes of the Pioneer, White Knob, and Beaverhead mountains of central Idaho. The association occurs at the lower margin of the alpine zone on moderately steep south-facing slopes. Elevation ranges from 3110 to 3125 m (10,190-10,250 feet). Substrate parent materials are of volcanic origin. <i>Festuca idahoensis</i> dominates the relatively sparse, low-growing vegetation. <i>Eriogonum caespitosum</i> is codominant. <i>Agoseris glauca, Artemisia tridentata ssp. vaseyana, Eriogonum ovalifolium, Ivesia gordonii</i>, and <i>Lupinus argenteus</i> are present to common. |
Comm #7210
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Populus fremontii - Platanus wrightii Forest
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accession code: VB.CC.18326.POPULUSFREMONTI
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Western Ecology Working Group of... |
0
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This is a lowland forested riparian association known from the Gila River watershed in New Mexico and has been reported from southwestern New Mexico and southern Arizona. It occurs in lowland river valleys at elevations ranging between 1180-1570 m (3875-5150 feet). The stream gradients are typically low, and channel substrates are gravelly or finer, but with pockets of cobbles. Typically, this type occurs as mature stands on older river terraces that are elevated several meters above the present riverbed and affected by only the largest flood events (25- to 100-year intervals). Occasionally the type occurs on lower bars that are more frequently flooded. Soils range from weakly developed Entisols on lower bars to more developed Inceptisols (deep, well-drained, stratified soils comprised of sandy, loamy surface soils underlain by finer silt layers) on the upper terraces. Cobbles and rock may be present on the surface, or buried at lower depths. The soils tend to be dry on the surface most of the year, but may be periodically moist at depths within the rooting zone of the dominant trees and shrubs, particularly during spring runoff periods. Populus fremontii and Platanus wrightii form open to moderately closed, sprawling canopies (50-75% cover). In older stands, multi-boled trees can attain large sizes with diameters exceeding 1-2 m (3-10 feet) at breast height (dbh), and heights of up to 25 m (82 feet). Populus fremontii and Platanus wrightii regeneration is rare, but other trees, such as Juglans major, Fraxinus velutina, Acer negundo and occasionally the introduced Gleditsia triacanthos, may be present as saplings or subcanopy associates. On drier sites and in older stands, Juniperus deppeana may also be common. Undergrowth is diverse and variable with 79 species reported for the type, but only 23 more than once. With the exception of Baccharis salicifolia, Pluchea sericea, and Salix exigua, shrubs are generally poorly represented. The herbaceous undergrowth is characterized by scattered grasses and forbs and includes the wetland indicators Symphyotrichum praealtum (= Aster praealtus) and Lobelia cardinalis, along with upland grama grasses (Bouteloua curtipendula, Bouteloua eriopoda, and Bouteloua gracilis). |
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