| Add/Drop |
Name
|
Reference
|
Plots↓
|
Description |
Comm #7241
|
Pinus virginiana - (Pinus rigida) - Nyssa sylvatica / Xanthorhiza simplicissima / Euphorbia corollata Forest
» more details
accession code: VB.CC.37519.CEGL006624
|
Vanderhorst, J. P., B. P. Street... |
0
|
This association occurs in narrow bands along high-energy floodplain gorges of a few rivers in West Virginia. Sites are located at constrictions associated with rapids and bends in the river. Solar exposure is relatively high for the gorge setting; most known sites occur in positions with southerly exposures. Substrates include bedrock, boulder, cobble, and sand. Soils are acidic, well-drained sand to sandy loam. Vegetation is a mixed evergreen-deciduous forest or woodland dominated by <i>Pinus virginiana</i> and/or <i>Pinus rigida</i>, with associated species forming an unusual mix of xerophytic and flood-tolerant species. The canopy varies from tall to somewhat stunted, with 30 to 70% cover. Canopy trees, in addition to the dominant pines, include <i>Acer rubrum, Nyssa sylvatica, Liriodendron tulipifera, Quercus prinus, Quercus alba</i>, and <i>Platanus occidentalis</i>. Other trees that are common in the subcanopy include <i>Tsuga canadensis, Ilex opaca var. opaca, Oxydendrum arboreum, Chionanthus virginicus, Carpinus caroliniana ssp. virginiana</i>, and <i>Betula nigra</i>. Shrub species include <i>Hamamelis virginiana, Rhododendron maximum, Kalmia latifolia, Lindera benzoin, Physocarpus opulifolius var. opulifolius</i>, and <i>Xanthorhiza simplicissima</i>. There is often regeneration of <i>Pinus virginiana</i> in the shrub layers. The herb layer is usually diverse, in sharp contrast to xeric upland associations dominated by <i>Pinus virginiana</i> or <i>Pinus rigida</i>. Common herbs in plots include <i>Rudbeckia laciniata, Potentilla canadensis, Pedicularis canadensis, Packera aurea, Lysimachia quadrifolia, Zizia aptera, Viola pedata, Solidago simplex var. racemosa, Packera paupercula, Hypoxis hirsuta, Euphorbia corollata, Deschampsia flexuosa, Schizachyrium scoparium, Andropogon gerardii</i>, and <i>Sorghastrum nutans</i>. |
Comm #7242
|
CEGL003569
» more details
accession code: VB.CC.5530.CEGL003569
NOT CURRENTLY ACCEPTED
|
EcoArt 2002 |
0
|
|
Comm #7243
|
Thuja occidentalis - Pinus strobus - Tsuga canadensis / Carex eburnea Forest
» more details
accession code: VB.CC.27018.THUJAOCCIDENTAL
|
Southeastern Ecology Working Gro... |
0
|
This is essentially a mixed coniferous-deciduous forest of the southern and central Appalachians, with each component contributing approximately 50% of the canopy cover. Thuja occidentalis and Pinus strobus are codominant in these samples, with Tsuga canadensis a less abundant associate. A variety of hardwoods co-occur, the most constant and abundant of which are Liriodendron tulipifera, Quercus alba, and Quercus rubra. Habitats are on moderately steep to steep (mean = 31 degrees), convex, west-northwest-facing slopes at relatively low elevation (mean = 521 m (1710 feet)). These slopes, situated in major stream and river valleys, are geomorphic products of long-term stream incision. Bedrock parent material at one site is interbedded limestone and sandstone of Silurian age; at another site is underlain by Ordovician limestone. Soils at both sites are evidently colluvial and have a neutral pH. The soil moisture regime was assessed as mesic at both sites, but tends toward the submesic end of this moisture class. This community type is extremely rare in Virginia, where it is known only from the two plot-sampled stands and two putative locations in Montgomery and Russell counties, all in the Ridge and Valley province. Patches of this vegetation are very small (0.1-1.0 ha), and additional occurrences are likely in suitable western Virginia habitats. Young reproduction of all three conifers (Thuja occidentalis, Pinus strobus, and Tsuga canadensis) dominates the understory layers; Sassafras albidum is also a constant understory tree, and Amelanchier arborea codominates in one plot. Hamamelis virginiana and young Tsuga canadensis dominate the shrub layer of one plot each. Other constant but low cover shrubs are Dirca palustris and Viburnum acerifolium. Tree height is variable from occurrence to occurrence. Herbaceous growth is sparse (mean stratum cover = 24%) and patchy. Many herbaceous species and woody seedlings occur at low cover. The most important herbaceous species include Eurybia divaricata (= Aster divaricatus), Brachyelytrum erectum, Chamaelirium luteum, Collinsonia canadensis, Dioscorea quaternata, Hepatica nobilis var. obtusa (= Hepatica americana), Solidago arguta, Solidago curtisii, and Uvularia perfoliata. |
Comm #7244
|
CEGL001829
» more details
accession code: VB.CC.4384.CEGL001829
NOT CURRENTLY ACCEPTED
|
EcoArt 2002 |
0
|
|
Comm #7245
|
Thuja occidentalis - Pinus strobus - Tsuga canadensis / Carex eburnea Woodland
» more details
accession code: VB.CC.34913.CEGL008426
|
Southeastern Ecology Working Gro... |
0
|
This is essentially a mixed coniferous-deciduous woodland of the Southern and Central Appalachians, with each component contributing approximately 50% of the canopy cover. <i>Thuja occidentalis</i> and <i>Pinus strobus</i> are codominant in these samples, with <i>Tsuga canadensis</i> a less abundant associate. A variety of hardwoods co-occur, the most constant and abundant of which are <i>Liriodendron tulipifera, Quercus alba</i>, and <i>Quercus rubra</i>. Habitats are on moderately steep to steep (mean = 31°), convex, west-northwest-facing slopes at relatively low elevation (mean = 521 m [1710 feet]). These slopes, situated in major stream and river valleys, are geomorphic products of long-term stream incision. Bedrock parent material at one site is interbedded limestone and sandstone of Silurian age; at another site is underlain by Ordovician limestone. Soils at both sites are evidently colluvial and have a neutral pH. The soil moisture regime was assessed as mesic at both sites, but tends toward the submesic end of this moisture class. This community type is extremely rare in Virginia, where it is known only from the two plot-sampled stands and two putative locations in Montgomery and Russell counties, all in the Ridge and Valley province. Patches of this vegetation are very small (0.1-1.0 ha), and additional occurrences are likely in suitable western Virginia habitats. Young reproduction of all three conifers (<i>Thuja occidentalis, Pinus strobus</i>, and <i>Tsuga canadensis</i>) dominates the understory layers; <i>Sassafras albidum</i> is also a constant understory tree, and <i>Amelanchier arborea</i> codominates in one plot. <i>Hamamelis virginiana</i> and young <i>Tsuga canadensis</i> dominate the shrub layer of one plot each. Other constant but low cover shrubs are <i>Dirca palustris</i> and <i>Viburnum acerifolium</i>. Tree height is variable from occurrence to occurrence. Herbaceous growth is sparse (mean stratum cover = 24%) and patchy. Many herbaceous species and woody seedlings occur at low cover. The most important herbaceous species include <i>Eurybia divaricata (= Aster divaricatus), Brachyelytrum erectum, Chamaelirium luteum, Collinsonia canadensis, Dioscorea quaternata, Hepatica nobilis var. obtusa (= Hepatica americana), Solidago arguta, Solidago curtisii</i>, and <i>Uvularia perfoliata</i>. |
Comm #7246
|
Pinus rigida - Nyssa sylvatica / Clethra alnifolia - Leucothoe racemosa Forest
» more details
accession code: VB.CC.30970.CEGL006926
|
Eastern Ecology Working Group of... |
0
|
This Pine Barrens lowland forest occurs on saturated sandy soils along braided streams or in depressions in southern New Jersey and on the Coastal Plain of Maryland. The canopy is a mixture of <i>Pinus rigida, Acer rubrum, Nyssa sylvatica</i>, with <i>Liquidambar styraciflua</i> in New Jersey. The canopy ranges from mixed deciduous-evergreen to deciduous. The subcanopy is characterized by <i>Magnolia virginiana</i>, with occasional <i>Ilex opaca</i>. Typical shrubs include <i>Clethra alnifolia, Leucothoe racemosa, Gaylussacia frondosa</i>, and <i>Vaccinium corymbosum</i>. There is often significant cover of <i>Smilax rotundifolia</i> vines. The herbaceous stratum includes <i>Osmunda cinnamomea</i> and <i>Gaultheria procumbens</i>. Other species of the herbaceous layer may include <i>Woodwardia areolata, Chasmanthium laxum, Carex folliculata, Bartonia paniculata, Carex atlantica, Carex seorsa, Glyceria striata</i>, and <i>Lycopus virginicus</i>. |
Comm #7247
|
Geum rossii - Minuartia obtusiloba Herbaceous Vegetation
» more details
accession code: VB.CC.21174.GEUMROSSIIMINUA
|
Western Ecology Working Group of... |
0
|
This plant association has been documented from southwestern Montana in the East Pioneer and Tobacco Root ranges. Stands are found on thin soils weathered from crystalline parent materials. This type is common on exposed, wind-swept, upper slopes, slope shoulders, saddles and ridgetops at elevations of 2990-3230 m (9800-10,600 feet). Extreme winds create a deflation surface with bare ground and gravel comprising nearly 50%, with much of the remainder cloaked by cushion plants. Soils are slightly acidic, have 35-70% coarse fragments, and are predominantly well-drained sandy loams. Structurally this is a cushion plant community with virtually no dwarf-shrub component and a graminoid component reduced to an average of only 4% cover. Only Festuca brachyphylla (= Festuca ovina) exhibits greater than 5% cover and high constancy; Luzula spicata, Carex elynoides, and Poa glauca are at least 50% constant, with low coverage. Mean forb cover is 30% with Geum rossii and Minuartia obtusiloba being 100% constant and together constituting about one-quarter to one-half of the total forb cover. Other important cushion plants are Eritrichium nanum, Phlox pulvinata, Douglasia montana, and Silene acaulis. Selaginella densa and Selaginella watsonii are locally abundant. This is the most characteristic cushion plant/fell-field community of southwestern Montana and is identified by the dominance of the diagnostic species Geum rossii and Minuartia obtusiloba, which sets it apart from other cushion plant communities, such as Phlox pulvinata - Trifolium dasyphyllum Herbaceous Vegetation (CEGL001980) and Antennaria microphylla - Artemisia scopulorum Herbaceous Vegetation (CEGL001847). However, there are other Rocky Mountain cushion plant communities, for instance those of the White Cloud Peaks, Idaho, and Beartooth Mountains, Montana, dominated by and named for Geum rossii, which may be similar, if not synonymous, with the community described here. |
Comm #7248
|
CEGL008351
» more details
accession code: VB.CC.7692.CEGL008351
|
EcoArt 2002 |
0
|
|
Comm #7249
|
CEGL004790
» more details
accession code: VB.CC.6298.CEGL004790
NOT CURRENTLY ACCEPTED
|
EcoArt 2002 |
0
|
|
Comm #7250
|
Tsuga canadensis - Liriodendron tulipifera - Platanus occidentalis / Rhododendron maximum - Xanthorhiza simplicissima Temporarily Flooded Forest
» more details
accession code: VB.CC.34797.CEGL007143
|
Southeastern Ecology Working Gro... |
0
|
This association covers forested wetlands dominated by mesophytic species with an admixture of alluvial or wetland species, that occur on temporarily flooded alluvial flats and ravines in the Southern Blue Ridge, the Cumberlands, and in adjacent ecoregions. These dense forests usually occur over silty to sandy, acidic soils. The canopy is usually a mix of species that includes <i>Tsuga canadensis, Liriodendron tulipifera, Platanus occidentalis, Betula lenta, Acer rubrum</i>, and a variety of other mesophytic and upland species. It may range from strong dominance by <i>Tsuga</i> to its virtual absence. The shrub and herbaceous strata may be dense to open, but have components indicative of the temporarily flooded hydrology, thus separating this type from similar, non-wetland communities. <i>Rhododendron maximum</i> is a typical shrub and can form a dense subcanopy, but <i>Xanthorhiza simplicissima, Alnus serrulata</i>, or other species indicative of flooding are present. The herbaceous layer generally includes species indicative of flooding as well as mesophytic upland species. |
add all query results to datacart,
add plots on page to datacart,
drop plots on page from datacart