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Reference
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Description |
Comm #9761
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CEGL001199
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accession code: VB.CC.3794.CEGL001199
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EcoArt 2002 |
0
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Comm #9762
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Populus balsamifera ssp. trichocarpa / Oplopanax horridus Woodland
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accession code: VB.CC.32978.CEGL003284
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Western Ecology Working Group of... |
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This plant association is common in southeastern Alaska and Prince William Sound. It is found on newly exposed, well-drained gravels of outburst and active floodplains. <i>Populus balsamifera ssp. trichocarpa (= Populus trichocarpa)</i> dominates the association ranging to 20 m (65 feet) tall, 20-76 cm (8-30 inches) in diameter, and 40-150 years old. Downed logs are uncommon. <i>Picea sitchensis</i> and <i>Populus balsamifera ssp. trichocarpa</i> regeneration are uncommon in the thick shrub cover. <i>Alnus viridis ssp. sinuata (= Alnus sinuata), Oplopanax horridus (= Echinopanax horridus)</i>, and <i>Sambucus racemosa</i> often form a nearly impenetrable thicket between the widely spaced <i>Populus balsamifera ssp. trichocarpa</i> trees. Forbs are sparsely represented and include <i>Circaea alpina</i> and <i>Athyrium filix-femina</i>. This is an early-seral type that will eventually be replaced by a <i>Picea sitchensis</i> forest and then, possibly, by <i>Tsuga heterophylla</i>. |
Comm #9763
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A.352
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accession code: VB.CC.1994.A352
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Forests in this alliance are described as nonriverine flats dominated or codominated by ~Quercus laurifolia$ with ~Nyssa biflora, Quercus phellos, Acer rubrum var. trilobum$, and ~Carpinus caroliniana$. ~Clethra alnifolia$ and ~Leucothoe axillaris$ are typical shrubs. These forests occur on poorly drained interstream flats with fine-textured mineral soils. Hydrology and species composition separate these communities from alluvial bottomland communities with somewhat similar canopy composition. They may occur on the margins of large peatlands, and on smaller upland flats where they experience mostly saturated soils as a result of poor drainage, high water tables, and perhaps sheet flow from adjacent pocosins. Examples of forests in this alliance currently are known from the Coastal Plain of North Carolina, and Virginia, and they are likely to occur in Alabama, Georgia, Mississippi, and South Carolina. |
Comm #9764
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NY Heritage: TERRESTRIAL SYSTEM
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accession code: VB.CC.28520.NYHERITAGETERRE
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Ecological Communities of New York, 2nd Ed. |
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The terrestrial system consists of upland habitats. These habitats have well-drained soils that are dry to mesic (never hydric), and vegetative cover that is never predominantly hydrophytic, even if the soil surface is occasionally or seasonally flooded o |
Comm #9765
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CEGL001083
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accession code: VB.CC.3682.CEGL001083
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #9766
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CEGL001084
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accession code: VB.CC.3683.CEGL001084
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #9767
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Quercus palustris - (Quercus lyrata) - Fraxinus pennsylvanica / Acer rubrum var. drummondii / Carex spp. Forest
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accession code: VB.CC.35633.CEGL008597
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Southeastern Ecology Working Gro... |
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This seasonally flooded bottomland forest community occurs at low elevations in depressions and flats associated with the overflow bottoms of small streams and on the larger Arkansas River floodplain in the Arkansas Valley of Arkansas. The trees are tall (to 80 feet), and the canopy can be closed to moderately open with a dense herbaceous layer of sedges and rushes. The canopy is dominated by <i>Quercus palustris</i>. Other typical canopy associates may dominate locally and include <i>Fraxinus pennsylvanica, Quercus lyrata, Quercus nigra</i>, and <i>Liquidambar styraciflua</i>. Oaks comprise over 50% of the dominants, higher percentages in older stands, lower in more disturbed areas. Occasional canopy species include <i>Acer saccharinum, Carya glabra, Celtis laevigata, Celtis occidentalis, Morus rubra, Prunus serotina, Quercus similis (= Quercus stellata var. paludosa), Ulmus alata</i>, and <i>Ulmus americana</i>. The subcanopy is dominated by <i>Acer rubrum var. drummondii</i> with occasional <i>Acer negundo, Diospyros virginiana</i>, and saplings of canopy species. The shrub layer is sparse with <i>Arundinaria gigantea, Asimina triloba, Cephalanthus occidentalis, Ilex decidua</i>, and <i>Rubus allegheniensis</i> occurring on raised mounds within the depression forest. The exotic <i>Ligustrum vulgare</i> may be present. Vines are uncommon except in disturbed areas and may include <i>Berchemia scandens, Parthenocissus quinquefolia, Smilax rotundifolia</i>, and <i>Toxicodendron radicans</i>. The herbaceous layer is dominated by dense stands of sedges including <i>Carex crinita, Carex lupuliformis, Carex tribuloides</i>, and <i>Carex typhina</i>. Other herbaceous species include <i>Symphyotrichum lateriflorum (= Aster lateriflorus), Bidens aristosa, Campsis radicans, Chasmanthium latifolium, Desmodium paniculatum, Commelina virginica, Echinodorus cordifolius, Geum canadense, Hypericum hypericoides, Juncus effusus, Leersia oryzoides, Polygonum virginianum, Sanicula canadensis, Saururus cernuus, Cinna arundinacea, Trachelospermum difforme, Trepocarpus aethusae, Verbesina alternifolia</i>, and <i>Vernonia missurica</i>. This community occurs on Taft silt loam in the Leadvale-Taft soil association. Taft soils are somewhat poorly drained and level on old stream terraces in broad valleys. The soil is formed in loamy alluvium washed from weathered sandstone and shale in uplands. There is a firm brittle layer in the subsoil which slows penetration, limits the available water capacity, and restricts root penetration. The stands are seasonally wet with a seasonally saturated hydrology. Many are impacted by beaver. Areas that have been cutover more recently have more stems per acre, a more closed canopy, and reduced herbaceous layer. No high-quality examples are known. This community is known from Fort Chaffee and other areas in the Arkansas Valley. The type location is in Sebastian County, Arkansas. |
Comm #9768
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A.748
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accession code: VB.CC.2379.A748
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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This shrubland alliance of southwestern California grows on steep, north-facing slopes with colluvial-derived soils between 50 and 800 m elevation. Precipitation is strongly seasonal, with the majority falling between November and May. Yearly rainfall totals about 60 cm. Summers are warm and dry, though temperatures may be tempered by the proximity to marine air. ~Salvia leucophylla$ is an important to dominant species in the shrub canopy, usually in the company of ~Artemisia californica$. Other shrubs present may include ~Salvia mellifera, Salvia apiana, Diplacus aurantiacus, Eriogonum fasciculatum$, and ~Isocoma menziesii$. Emergent individuals of ~Juglans californica, Quercus agrifolia, Malosma laurina, Rhus integrifolia$, and ~Sambucus mexicana$ may also be present. The variable herbaceous layer may be dominated by annual graminoids. |
Comm #9769
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CEGL006410
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accession code: VB.CC.6896.CEGL006410
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EcoArt 2002 |
0
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Comm #9770
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Abies lasiocarpa - Picea engelmannii / Oplopanax horridus Forest
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accession code: VB.CC.32196.CEGL000322
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Western Ecology Working Group of... |
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This minor coniferous forest association occurs in drainages and seeps at mid-elevations in mountain ranges of northwestern Montana and northern Idaho. Elevations range from 1200-1500 m. Stands tend to be small (<8 ha) and are restricted to low-lying areas with high water tables most of the year, such as along streams, springs and seeps. Sites are seasonally flooded with surface water present for extended periods during the growing season, and tree regeneration is dominated by <i>Abies lasiocarpa</i>. This association often forms long narrow stands within floodplains. Soils are variable, but generally acidic with a deep organic layer. Late-seral stands are characterized by a moderately dense to dense, sometimes giant (>50 m tall) tree canopy codominated by <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> or <i>Picea glauca</i>. Minor tree associates include <i>Pseudotsuga menziesii, Larix occidentalis</i>, and <i>Pinus monticola</i>. <i>Oplopanax horridus</i> and <i>Taxus brevifolia</i> dominate the moderately dense to dense tall-shrub layer; at least 5% cover of <i>Oplopanax horridus</i> is considered diagnostic for the association. Other common shrub associates include <i>Menziesia ferruginea, Rubus parviflorus, Symphoricarpos albus</i>, and <i>Vaccinium</i> spp. <i>Linnaea borealis</i> may also have high cover, and <i>Abies lasiocarpa</i> dominates the tree regeneration. The herbaceous layer is abundant, diverse, and forb-dominated, including species such as <i>Clintonia uniflora, Maianthemum stellatum, Streptopus amplexifolius, Tiarella trifoliata</i>, and the ferns <i>Athyrium filix-femina</i> and <i>Gymnocarpium dryopteris</i>. Diagnostic of this association is the closed coniferous tree canopy codominated by <i>Abies lasiocarpa</i> with an <i>Oplopanax horridus</i>-dominated tall-shrub layer. |
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