| Add/Drop |
Name
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Reference
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Plots↓
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Description |
Comm #10091
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CEGL006389
» more details
accession code: VB.CC.6882.CEGL006389
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EcoArt 2002 |
0
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Comm #10092
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A.1736
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accession code: VB.CC.1479.A1736
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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This alliance occurs in deeper waters than other seagrass alliances. It is found in Florida, Texas, and possibly Mexico. As a species ~Halophila engelmannii$ occurs in many seagrass communities, but only dominates at greater depths. Where it is dominant, no other vascular plants are generally present. These communities are primarily in low wave energy situations. |
Comm #10093
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CEGL007903
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accession code: VB.CC.7487.CEGL007903
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10094
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Acer saccharinum - (Populus deltoides) / Matteuccia struthiopteris Forest
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accession code: VB.CC.19228.ACERSACCHARINUM
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Eastern Ecology Working Group of... |
0
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These are silver maple floodplain forests along major rivers in the temperate northeastern United States. They occur on the deep, alluvial, silty to somewhat coarse soils of point bars, levees, and adjacent terraces of medium to large, high-energy and moderate-gradient rivers with heavy erosion and sedimentation, and are subjected to spring flooding. The more-or-less closed canopy is high and arching, and the dominant below-canopy feature is the lush and extensive herb layer, with ferns especially prominent. Shrubs are scattered and the overall shrub cover is low. Bryoids are very minor. The canopy is strongly dominated by Acer saccharinum. Other trees may be locally common, or scattered, including Populus deltoides, Quercus rubra, Acer negundo, Ulmus rubra, Juglans nigra, Fraxinus americana, and Fraxinus pennsylvanica. Populus deltoides tends to be characteristic of the siltier soils and levees within these forests. Typical shrubs include Lindera benzoin, Cornus amomum, Sambucus canadensis, and potentially invasive non-native Lonicera spp., Rosa multiflora, or Ligustrum vulgare. Vines such as Vitis riparia are common at some sites. The dominant herbs are Matteuccia struthiopteris and Laportea canadensis. Associated herbs include Elymus riparius, Elymus virginicus, Amphicarpaea bracteata, Ageratina altissima (= Eupatorium rugosum), Arisaema triphyllum, Circaea lutetiana, Thalictrum pubescens, Onoclea sensibilis, and Polygonum virginianum (= Tovara virginiana). Particularly in the southern portions of this type's range, non-native herbs such as Alliaria petiolata, Allium vineale, Ranunculus ficaria, and Microstegium vimineum may essentially replace the native herbs. This association is distinguished from the related Acer saccharinum / Onoclea sensibilis - Boehmeria cylindrica Forest (CEGL006176) by its greater abundance of Matteuccia struthiopteris relative to Onoclea sensibilis and its better-drained soils. Flood duration is usually shorter in the ostrich fern type. It is distinguished from floodplain forests to the south by the absence (or only very rare presence) of Platanus occidentalis and Celtis occidentalis. |
Comm #10095
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A.28
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accession code: VB.CC.1887.A28
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10096
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CEGL007354
» more details
accession code: VB.CC.7082.CEGL007354
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10097
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Ambrosia dumosa - Larrea tridentata var. tridentata Dwarf-shrubland
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accession code: VB.CC.25358.AMBROSIADUMOSAL
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Western Ecology Working Group of... |
0
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Comm #10098
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CEGL003449
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accession code: VB.CC.5499.CEGL003449
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10099
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Salix (exigua, interior) Temporarily Flooded Shrubland Alliance
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accession code: VB.CC.19265.SALIXEXIGUAINTE
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Western Ecology Working Group of... |
0
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Plant associations within this temporarily flooded shrubland alliance are located on floodplains and gravel bars between 780-1760 m in the western U.S., and at lower elevations (to below 100 m) in the midwestern and southeastern U.S. Stands may be dominated either by Salix exigua (in the West) or Salix interior (in the Midwest and East). Both species or intermediates may occur in stands in the region where the range of the two species overlap. These shrublands are found on open sandbars without canopy shading on larger, well-developed drainages and along larger sandy rivers, or on coarser-textured substrates. They are associated with annual flooding and inundation and will grow well into the channel, where it is flooded, even in drier years. Even though flooding is frequent, surface water is not present for much of the growing season, and the water table is well below the surface. Some stands form large, wide stands on mid-channel islands on larger rivers, or narrow stringer bands on small, rocky tributaries. Stream reaches range widely from moderately sinuous and moderate-gradient reaches to broad, meandering rivers with wide floodplains or broad, braided channels. Many stands also occur within highly entrenched or eroding gullies. Soils of this alliance are typically coarse alluvial deposits of sand, silt and cobbles that are highly stratified with depth from flooding scour and deposition. The stratified profiles consist of alternating layers of clay loam and organic material with coarser sand or thin layers of sandy loam over very coarse alluvium. Occasionally, stands may occur on deep pockets of sand. The pH of the substrate ranges from 6.0-6.8. The canopy is dominated by a tall, 2- to 5-m, broad-leaved deciduous shrub that is typically many-branched with continuous cover of 60-100%. The herbaceous stratum has sparse to moderate cover including a variety of pioneering species. This alliance represents an early seral, primary successional stage on newly deposited sediments that may persist under a regime of repeated fluvial disturbance. Salix exigua and Salix interior are highly adapted to most forms of disturbance. Both species are prolific sprouters and will reestablish themselves on sites dominated by other disturbance-associated species, e.g., Glycyrrhiza lepidota and Pascopyrum smithii (= Agropyron smithii). Associations in this shrubland alliance are common and widespread. Shrublands dominated solely by Salix exigua (sensu stricto) extend from the Pacific Northwest and California east into the Rocky Mountains and onto the Great Plains. Stands of possibly mixed or ambiguous composition may occur from the northern Great Plains south to the Colorado plains, possibly extending into northeastern New Mexico and the western portions of the Dakotas, Nebraska, Kansas, and Oklahoma. Examples dominated by Salix interior occur in the Midwest in Iowa, Illinois, Indiana, Ohio, and the eastern portions of North Dakota, South Dakota, Nebraska, and Kansas. They also extend into Arkansas, Tennessee, Kentucky, Texas, and eastern Oklahoma, and possibly in Pennsylvania and West Virginia, as well as in Manitoba and other provinces of Canada. In western Oklahoma and throughout the Ozarks the associations are local along major streams. In the West, adjacent upland plains communities include agricultural fields and rolling hills of Artemisia filifolia, xeric tallgrass prairies, and Bouteloua gracilis shortgrass prairies. In the steep canyons of the foothills, upslope vegetation includes Pseudotsuga menziesii and Pinus ponderosa forests, Pinus edulis and Juniperus spp. woodlands, oak, sagebrush, and greasewood scrub. In the lower montane, upslope vegetation includes Pinus contorta and Populus tremuloides forests. |
Comm #10100
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Alnus rubra / Acer circinatum / Claytonia sibirica Forest
» more details
accession code: VB.CC.25798.ALNUSRUBRAACERC
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Western Ecology Working Group of... |
0
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