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Comm #12221
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Limestone - Dolostone Great Lakes Shore Cliff Sparse Vegetation
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accession code: VB.CC.36875.CEGL002504
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Midwestern Ecology Working Group... |
0
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This limestone - dolostone cliff community is found along the northern Great Lakes shorelines in the United States and Canada. Stands occur both as open exposed cliff faces and as low exposures concealed by forest cover. Exposed cliff faces are often wind-swept and experience extreme temperature fluctuations, with little vegetation. Plants growing in crevices include <i>Deschampsia caespitosa, Pellaea glabella, Physocarpus opulifolius, Polypodium virginianum</i>, and <i>Thuja occidentalis</i>. Where cliffs are largely concealed by a forest canopy, their climatic conditions are moderated, and many other herbaceous species are found, including <i>Aralia nudicaulis, Cystopteris bulbifera, Cystopteris fragilis, Geranium robertianum</i>, and <i>Trientalis borealis</i>. Other woody species present include <i>Tilia americana, Acer spicatum</i>, and <i>Taxus canadensis</i>. Mosses may also be common. |
Comm #12222
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Acer (nigrum, saccharum) - Carya cordiformis Forest
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accession code: urn:lsid:vegbank.org:commConcept:33201-{0229B465-E0E1-46C3-8F08-CA67C71979BC}
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NatureServe Biotics 2019 |
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These are deep soil mesophytic forests of the Inner Bluegrass of Kentucky. This type also includes forests on terraces and slopes above the terraces, on deep loess soils along the Ohio River. According to Julian Campbell, these forests are distinct from other mesophytic types because <i>Fagus grandifolia</i> and <i>Liriodendron tulipifera</i> are lacking. They are dominated and/or characterized by <i>Acer nigrum</i> and/or <i>Acer saccharum</i> and <i>Carya cordiformis</i>. Historically, this vegetation was best developed in the rolling uplands of the Karst Plains of the Inner Bluegrass, where the predominant forest type was oak - ash or oak - hickory. It represents the forest of slightly more mesic slopes and swales in this landscape. As these were some of the best agricultural soils, most examples have been converted. It represents the calcareous part of Kentucky's "Deep Soil Mesophytic Forest." |
Comm #12223
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Larix occidentalis / Clintonia uniflora - Xerophyllum tenax Forest
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accession code: VB.CC.32156.CEGL005881
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Western Ecology Working Group of... |
0
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This wholly seral, large-patch to matrix type occupies the relatively cold and dry environments across a number of climax tree series and associated geographic regions; the species defining these series include, but are not limited to, <i>Thuja plicata, Tsuga heterophylla, Tsuga mertensiana, Abies grandis, Abies lasiocarpa</i>, and <i>Picea engelmannii</i>. Thus this mesic type is found throughout the northern Rocky Mountains and may extend as far west as the Cascade Crest on environments characterized as foothills and montane to lower and even mid-subalpine. This association's possible elevation range is from 915 to 1800 m (3000-5900 feet), and regardless of the climax series in which it is found, it consistently occurs on south- through west-facing exposures. The range of parent materials is, with the exception of highly unusual substrates like serpentine, literally as great as possible types occurring in the northern Rocky Mountains and northernmost middle Rocky Mountains and may include some ultramafics east of the Cascade Crest. It is difficult to characterize the soils as well, but they are uniformly well-drained and have a low coarse-fragment content, except those sites within the lower to mid-subalpine zone. The overstory is dominated by <i>Pseudotsuga menziesii</i> with a whole host of tree species capable of playing a subordinate role; on warmer sites these include <i>Thuja plicata, Tsuga heterophylla, Abies grandis</i>, and on colder or higher elevation sites are found <i>Abies lasiocarpa, Tsuga mertensiana</i>, and <i>Picea engelmannii</i>. However the most frequent canopy codominants or associates are the seral species <i>Larix occidentalis, Pinus contorta</i>, and in a restricted portion of the type's range, <i>Pinus monticola</i>. The tall-shrub component is relatively unimportant, only <i>Alnus viridis ssp. sinuata</i> and <i>Amelanchier alnifolia</i> approach 50% constancy (and have low cover values). The short-shrub layer exhibits greater cover and diversity than the other shrub components with <i>Vaccinium membranaceum, Paxistima myrsinites, Rosa gymnocarpa, Rubus parviflorus</i>, and <i>Spiraea betulifolia</i> being consistently present. <i>Linnaea borealis</i> and <i>Chimaphila umbellata</i> have high constancy in the dwarf-shrub layer. <i>Bromus vulgaris</i> (or <i>Bromus ciliatus</i>) are the only graminoids of note. The diagnostic forbs <i>Clintonia uniflora, Xerophyllum tenax</i>, and <i>Tiarella trifoliata</i> naturally have high constancy and/or cover; however, a number of other forbs also exhibit high constancy, including <i>Arnica latifolia, Aralia nudicaulis, Adenocaulon bicolor, Coptis occidentalis, Cornus canadensis, Galium triflorum, Goodyera oblongifolia, Maianthemum stellatum, Osmorhiza berteroi (= Osmorhiza chilensis), Pedicularis racemosa, Orthilia secunda (= Pyrola secunda), Thalictrum occidentale, Trillium ovatum</i>, and <i>Viola orbiculata</i>. |
Comm #12224
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Larix occidentalis / Vaccinium caespitosum Forest
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accession code: VB.CC.31134.CEGL005882
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Western Ecology Working Group of... |
0
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This small- to large-patch minor forested type occurs throughout the northern Rocky Mountains. Its presence is strongly associated with well-drained sites in frosty basins or benchlands where cold air accumulates. It is found at moderate elevations between 915 to 1220 m (3000-4000 feet) in the western portion of its distribution but occurs as high as 1525 m (5000 feet) on the Flathead and Kootenai national forests, and yet further to the east it may be found to 2195 m (7200 feet) in basins along the Continental Divide. These sites are postulated to experience frequent summer frost coupled with warm daily maximum temperatures; this factor combination is thought to be limiting to climax conifer species, which establish and grow slowly on these sites. Surface soils are mostly derived from alluvial and to lesser degree colluvial deposits, both gravelly and non-gravelly sandy loams to silts with acidic reaction (pH averaged 5.0 in Montana for comparable type). Sites with the above suite of characteristics are generally dominated by <i>Pinus contorta</i> in the overstory, but occasionally <i>Larix occidentalis</i> becomes abundantly established, the unique result of a plentiful local <i>Larix</i> cone crop and a stand-replacing disturbance (wildfire) and a non-serotinous local population of <i>Pinus contorta</i>. <i>Pseudotsuga menziesii</i> and <i>Pinus contorta</i> are present as a minor component of open canopies dominated by <i>Larix occidentalis</i>; <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> are present as depauperate specimens in the reproductive layers. Though short shrubs may be represented and even exhibit high constancy (e.g., <i>Amelanchier alnifolia, Lonicera utahensis, Spiraea betulifolia, Shepherdia canadensis, Juniperus communis</i>), it is the dwarf-shrub layer that dominates. Cover of the two indicators of the type, <i>Vaccinium caespitosum</i> and <i>Arctostaphylos uva-ursi</i>, varies markedly, from a few percent to nearly a continuous layer. Other dwarf-shrubs with a consistent presence and occasional abundance are <i>Linnaea borealis, Mahonia repens, Vaccinium scoparium</i>, and <i>Vaccinium myrtillus</i>. <i>Calamagrostis rubescens</i> consistently dominates the graminoid component, and frequently it fills the interstices between dwarf-shrubs to create a virtually unbroken layer. <i>Carex geyeri</i> and <i>Carex concinnoides</i> are also moderately constant within the type. Forbs are usually a negligible component with only <i>Arnica cordifolia, Orthilia secunda (= Pyrola secunda), Hieracium albiflorum</i>, and <i>Maianthemum racemosum</i> exhibiting moderate to high constancy. |
Comm #12225
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CEGL000793
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accession code: VB.CC.3397.CEGL000793
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12226
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A.1720
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accession code: VB.CC.1468.A1720
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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This alliance consists of aquatic vegetation in rivers and streams of southern Florida, dominated by various mixtures of ~Najas guadalupensis, Ceratophyllum demersum$, and ~Utricularia inflata$. This alliance may need modification as more information becomes available. |
Comm #12227
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Abies amabilis / Vaccinium ovalifolium / Tiarella trifoliata Forest
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accession code: VB.CC.34440.CEGL000009
NOT CURRENTLY ACCEPTED
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Western Ecology Working Group of... |
0
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Comm #12228
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Pinus edulis - Juniperus osteosperma / Shepherdia rotundifolia Woodland
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accession code: VB.CC.32034.CEGL002335
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Western Ecology Working Group of... |
0
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This woodland association occurs in two distinct situations: At Natural Bridges National Monument and Capitol Reef National Park, stands of this type occupy rolling uplands on eolian, alluvial or residual red sandy silt soils, often in a mosaic with ~<i>Pinus edulis - Juniperus</i> spp. / <i>Artemisia tridentata</i> (ssp. <i>wyomingensis</i>, ssp. <i>vaseyana</i>) Woodland (CEGL000776)$$ and ~<i>Pinus edulis - Juniperus osteosperma</i> / Sparse Understory Woodland (CEGL002148)$$. In addition, at Capitol Reef and Canyonlands national parks, stands occur on warm, dry, moderately steep lower slopes where sandstone colluvium overlies slopes of Chinle or Organ Rock shales. Elevations range from 1445 to 2273 m (4740-7460 feet). Soils vary depending on substrate, including sandy loams, sandy clays, and silt loams. This woodland association is locally common in the Colorado Plateau of southern Utah. Total vegetation cover ranges between 15 and 80%. <i>Juniperus osteosperma</i> and <i>Pinus edulis</i> form a canopy 2-5 m tall and with 10-60% cover. The understory is characterized by a shrub layer dominated by <i>Shepherdia rotundifolia</i>. Other shrubs present may include <i>Artemisia tridentata ssp. wyomingensis, Mahonia fremontii, Artemisia nova</i>, and <i>Gutierrezia sarothrae</i>. Herbaceous species generally have low total cover and vary from site to site. Cryptobiotic soils may have significant cover in sites derived from loess. |
Comm #12229
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Quercus gambelii / Sparse Understory Shrubland
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accession code: VB.CC.31942.CEGL002337
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Western Ecology Working Group of... |
0
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This association occurs on flat to gently sloping valley floors, canyon bottoms, or narrow high terraces in canyons of the Colorado Plateau and high plateaus of southern Utah. Stands are usually at least 1 m above bankfull stage and rarely, if ever, flood. Elevations range from 1220 to 2190 m (4000-7200 feet). The substrate is a fine sandy alluvium, and oak leaf litter generally covers nearly all the unvegetated surface. The canopy consists of even-aged <i>Quercus gambelii</i> stems 5-15 m high with 50-80% canopy closure. The understory consists primarily of oak sprouts less than 0.5 m tall. Scattered individuals of other woody species may occur throughout stands, including <i>Juniperus scopulorum, Ericameria nauseosa, Rhus trilobata</i>, and <i>Acer negundo</i>. Herbaceous species are usually sparse because of the dense shade cast by the relatively closed canopy but may include <i>Piptatherum micranthum, Maianthemum stellatum, Stanleya pinnata</i>, and <i>Clematis ligusticifolia</i>. |
Comm #12230
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CEGL000406
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accession code: VB.CC.3023.CEGL000406
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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