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Description |
Comm #6791
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Basalt - Diabase Great Lakes Shore Cliff Sparse Vegetation
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accession code: VB.CC.37098.CEGL005191
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Midwestern Ecology Working Group... |
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This basalt - diabase cliff community is found along Great Lakes shorelines in the sub-boreal regions of the Great Lakes in the United States and central Canada. Stands occur on vertical or near-vertical, south- to west-facing aspects of bedrock. Moisture is derived from precipitation, with severe wave action possible for cliffs along the Great Lakes shoreline. Mosses, lichens, ferns, and liverworts may be found, with occasional graminoids in crevices or shelves that trap soil. In Minnesota, arctic-alpine disjunct plant species (e.g., <i>Moehringia macrophylla (= Arenaria macrophylla), Draba norvegica</i>) and more temperate plant species may be found. |
Comm #6792
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Picea glauca - (Betula papyrifera) / Danthonia spicata Woodland
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accession code: VB.CC.36929.CEGL005196
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Midwestern Ecology Working Group... |
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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 (= Aster macrophyllus), 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>Cladina</i> spp. and foliose lichens; the most abundant moss is <i>Pleurozium schreberi</i>. |
Comm #6793
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Corylus cornuta - Amelanchier spp. - Prunus virginiana Rocky Shrubland
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accession code: VB.CC.37051.CEGL005197
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Midwestern Ecology Working Group... |
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This rocky shrubland is found in the northern Great Lakes region of the United States and Canada. Stands occur on rocky ridges, with thin, acidic soils. The vegetation is dominated by shrubs, with a strong graminoid layer. Dominant shrubs include <i>Amelanchier</i> spp., <i>Corylus cornuta</i>, and <i>Prunus virginiana</i>. Other shrubs include <i>Juniperus communis, Rosa acicularis</i>, and <i>Rhus typhina</i>. Associated herbs include <i>Danthonia spicata, Hieracium</i> spp., and <i>Poa compressa</i>. |
Comm #6794
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Pinus ponderosa / Festuca idahoensis Woodland
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accession code: VB.CC.24854.PINUSPONDEROSAF
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Western Ecology Working Group of... |
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Comm #6795
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Eastern Boreal & Laurentian Sandstone Talus Vegetation
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accession code: VB.CC.36727.CEGL005202
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Midwestern Ecology Working Group... |
0
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This sandstone talus community is found in the eastern boreal and Laurentian region (upper Great Lakes) of Canada and the United States. Stands occur at the bases of steep cliffs along larger streams or rivers, or strongly dissected valleys. Aspect is variable, and moisture could be moist or dry. Soils are generally absent. Parent material is sandstone. The vegetation is generally sparse, but may vary depending on degree of slope, exposure (open vs. shaded) and rock type. The composition of the type may be heavily influenced by adjacent forested stands. The vegetation of this type has not been characterized. |
Comm #6796
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Igneous Ozark Talus Sparse Vegetation
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accession code: VB.CC.36963.CEGL005203
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Midwestern Ecology Working Group... |
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This igneous talus type is found in the Missouri Ozarks of the United States. Stands occur on moderately steep to extremely steep slopes at the bases of bluffs, cliffs, and steep valleys or sideslopes of mountain domes, especially along shut-ins. Aspect is in all directions. Soils are absent and the slope is dry. The parent material is igneous, with a large mass of accumulated angular rock fragments and boulders forming large (4 ha or 10 acres) rocky areas. Disturbances include falling rock fragments from adjacent cliffs and slumping of rock material. The vegetation is sparse, consisting of herbaceous plants, vines, mosses and lichens. Characteristic vines include <i>Celastrus scandens, Lonicera flava, Rhus aromatica, Smilax bona-nox, Toxicodendron radicans</i>, and <i>Vitis aestivalis</i>. Other characteristic species include the forb <i>Polymnia canadensis</i>, the moss <i>Dicranum scoparium</i>, and the lichens include <i>Pleopsidium chlorophanum (= Acarospora chlorophana), Cladonia caroliniana, Cladonia strepsilis, Placidium lachneum (= Dermatocarpon lachneum), Punctelia hypoleucites (= Parmelia hypoleucites)</i>, and <i>Xanthoparmelia</i> spp. |
Comm #6797
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Picea glauca - Abies balsamea Basalt - Conglomerate Woodland
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accession code: VB.CC.36912.CEGL005214
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Midwestern Ecology Working Group... |
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This basalt bedrock shore community is found along the Lake Superior shorelines of the United States and Canada. Stands occur between the open basalt bedrock and the inland forests. Soils are thin and exposed areas of bedrock are common. This community consists of scattered, open-grown trees, scattered shrubs or shrub thickets, and a partial layer of graminoids, mosses, and lichens. The scattered, and often stunted, tree layer contains <i>Abies balsamea, Betula papyrifera, Picea glauca, Pinus resinosa, Pinus strobus, Quercus rubra, Sorbus decora</i>, and <i>Thuja occidentalis</i>. The shrub layer is very sparse and may contain <i>Amelanchier</i> spp. and <i>Juniperus communis</i>. More prominent is the dwarf-shrub layer, which contains <i>Arctostaphylos uva-ursi, Epigaea repens, Juniperus horizontalis, Lonicera dioica, Rosa acicularis</i>, and <i>Vaccinium angustifolium</i>. The herbaceous layer is characterized by <i>Achillea millefolium, Calamagrostis canadensis, Danthonia spicata, Festuca saximontana var. saximontana (= Festuca ovina var. saximontana), Fragaria virginiana</i>, and <i>Sibbaldiopsis tridentata (= Potentilla tridentata)</i>. Mosses and lichens occur in localized patches throughout the stand. |
Comm #6798
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Fouquieria splendens / Muhlenbergia setifolia Shrub Herbaceous Vegetation
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accession code: VB.CC.33922.CEGL001513
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Western Ecology Working Group of... |
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Comm #6799
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Basalt - Conglomerate Bedrock Great Lakes Shore Sparse Vegetation
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accession code: VB.CC.37100.CEGL005215
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Midwestern Ecology Working Group... |
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This basalt bedrock lakeshore is found along the Lake Superior shoreline of both the United States and Canada. The bedrock consists of basalts, volcanic conglomerates, and localized rhyolites. Volcanic conglomerate shores may be more species rich than basalt shores due to the presence of cracks or small cavities in the former. Wave action and ice scour action are strongest near the shore, producing a wave-washed zone almost devoid of vegetation, except for scattered patches of mosses and lichens, and pockets of herbaceous species around bedrock pools. With increasing distance above the lake, herbaceous and nonvascular plant cover increases, though still very patchy, with lichens predominating, particularly on high, dry rocks. Herbaceous species include <i>Achillea millefolium, Campanula rotundifolia, Fragaria virginiana, Sibbaldiopsis tridentata (= Potentilla tridentata)</i>, and <i>Solidago simplex</i>. Perched meadows, dominated by tufted graminoids, are found at the edge of seasonal pools. The most common meadow species are <i>Calamagrostis canadensis, Carex buxbaumii, Carex castanea, Danthonia spicata, Deschampsia caespitosa, Trichophorum caespitosum (= Scirpus cespitosus)</i>, and <i>Trisetum spicatum</i>, as well as <i>Pinguicula vulgaris</i>. Lichens, mosses, and liverworts are prominent. Scattered, often stunted, woody trees and shrubs are found throughout, including <i>Abies balsamea, Amelanchier</i> spp., <i>Juniperus communis, Picea glauca, Populus tremuloides, Rubus pubescens, Shepherdia canadensis, Thuja occidentalis</i>, and <i>Vaccinium angustifolium</i>. |
Comm #6800
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CEGL000117
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accession code: VB.CC.2744.CEGL000117
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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