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Name
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Reference
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Plots↓
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Description |
Comm #5321
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Quercus gambelii / Poa fendleriana Shrubland
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accession code: VB.CC.31665.CEGL002949
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Western Ecology Working Group of... |
0
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This montane shrubland association has been described from the Colorado Plateau and the western slope of the southern Rocky Mountains. Elevation ranges from 1770-2337 m (5800-7660 feet). Sites are on nearly level mesas to steep hillslopes (to 59%). Soils are rapidly drained loamy sand and sandy loam derived from sandstones. There is typically high cover of litter and moderate cover of large rocks and bare ground. The vegetation is characterized by an open to moderately dense (10-65% cover) tall-shrub layer (2-5 m tall) that is dominated by <i>Quercus gambelii</i>. Other shrubs may be present with low cover and do not form a separate short-shrub layer (generally <10% total). Species include <i>Amelanchier utahensis, Artemisia tridentata ssp. wyomingensis, Purshia tridentata, Mahonia repens</i>, and <i>Symphoricarpos</i> spp. The herbaceous layer may be diverse and provides low to high cover depending on overstory canopy density. The bunchgrass <i>Poa fendleriana</i> is usually dominant (to 30% cover) and occurs consistently. Additional graminoids provide sparse to low cover, such as <i>Achnatherum hymenoides, Bouteloua gracilis, Carex geyeri</i>, and <i>Hesperostipa comata</i>. Forbs typically have low cover but may be diverse. Common forbs include <i>Arenaria</i> spp., <i>Artemisia ludoviciana, Eriogonum</i> spp., <i>Petradoria pumila</i>, and <i>Phlox austromontana</i>. |
Comm #5322
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CEGL000423
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accession code: VB.CC.3037.CEGL000423
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #5323
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CEGL002273
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accession code: VB.CC.4784.CEGL002273
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #5324
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CEGL001742
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accession code: VB.CC.4300.CEGL001742
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #5325
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Salix candida / Carex utriculata Shrubland
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accession code: VB.CC.18596.SALIXCANDIDACAR
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Western Ecology Working Group of... |
0
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This is a rare association that occurs between 1476 to 2348 m (4840-7700 feet) elevation in mountains and basins of western Montana, as well as at scattered localities in eastern Idaho, the Black Hills of South Dakota, and northwestern Wyoming. This association is restricted to continuously wet, anaerobic histosolic soils of peatlands. Stands often form on anchored floating mats along montane lake margins and sometimes occur in spring-fed rich-fens in intermountain basins. The association is characterized by widely scattered clumps of 1- to 1.5-m tall Salix candida, with lesser amounts of other low Salix species (e.g., Salix planifolia, Salix exigua, Salix bebbiana, Salix serissima, or Salix wolfii), Betula nana, and/or Dasiphora fruticosa ssp. floribunda. The open shrub layer (up to 30% cover) occurs within a sward of Carex utriculata, often mixed with Carex aquatilis, which sometimes includes other graminoid species such as Carex simulata, Carex nebrascensis, Deschampsia caespitosa, Calamagrostis canadensis, Glyceria striata, and Juncus balticus. Total forb cover is generally low to moderate, mostly composed of Gentianopsis thermalis, Menyanthes trifoliata, Packera streptanthifolia, Symphyotrichum foliaceum, Triglochin maritima, and various rare and/or endemic fen species. |
Comm #5326
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Pinus edulis - Juniperus osteosperma / Cercocarpus ledifolius Woodland
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accession code: VB.CC.31985.CEGL002940
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Western Ecology Working Group of... |
0
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This woodland association occurs on ridges, mountains and plateaus in the Colorado Plateau of eastern and southern Utah and western Colorado. Sites are moderately steep to steep. Stands in the northern part of the range tend to be on slopes with southerly aspects; in the southern part of the range, northerly aspects are more common. Elevations range from 2400 to 2770 m (7900-9100 feet) in Utah and from 2200 to 2260 m (7200-7400 feet) in Colorado. The unvegetated surface is primarily covered by large rocks, bare soil and bedrock exposures. Downed wood is common. Parent materials are sandstone or quartzite bedrock or colluvium. Soils are rapidly drained and range in texture from clay loam to loamy sand. Total vegetation cover ranges from 13 to 80%. The vegetation is characterized by an open canopy of <i>Pinus edulis, Juniperus scopulorum</i>, and <i>Juniperus osteosperma</i> trees, with <i>Cercocarpus ledifolius</i> trees or shrubs that range in cover from 5 to 30%. The associated short- and dwarf-shrub layer typically provides sparse to low cover and includes <i>Amelanchier utahensis, Arctostaphylos patula, Artemisia tridentata ssp. vaseyana, Cercocarpus montanus, Ericameria nauseosa, Quercus gambelii</i>, and <i>Gutierrezia sarothrae</i>. The herbaceous layer is somewhat diverse in terms of species composition but provides less than 10% total cover. Common graminoids include <i>Achnatherum hymenoides, Elymus elymoides, Poa fendleriana</i>, and <i>Carex</i> spp. Forbs present may include <i>Balsamorhiza sagittata, Chenopodium album, Descurainia californica</i>, and <i>Petradoria pumila</i>. Seedling <i>Pinus edulis</i> and <i>Juniperus</i> spp. are often present. |
Comm #5327
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CEGL000683
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accession code: VB.CC.3288.CEGL000683
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #5328
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CEGL000122
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accession code: VB.CC.2749.CEGL000122
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #5329
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CEGL002772
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accession code: VB.CC.5148.CEGL002772
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #5330
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Populus deltoides (ssp. wislizeni, ssp. monilifera) / Artemisia tridentata Woodland
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accession code: VB.CC.31921.CEGL005966
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Western Ecology Working Group of... |
0
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This mature riparian forest association is found in the San Juan River drainage in northwestern New Mexico and adjacent southeastern Utah. It is probably present in northeastern Arizona. It occurs along low-gradient rivers of wide lowland valleys at elevations from 1640 to 1840 m (5375-6025 feet). Stands are located on high terraces well above the active channel (discharge ratio >5), and flooding is infrequent (50- to 100-year recurrence intervals). Soils have coarse loamy profiles throughout and are mostly young and undeveloped Entisols, although Inceptisols can occur on higher terraces where soil development has not been disrupted by flooding. Mature <i>Populus deltoides</i> canopies are generally open, with <i>Juniperus scopulorum, Elaeagnus angustifolia</i>, and <i>Salix amygdaloides</i> in the subcanopy. The shrub layer is dominated by <i>Artemisia tridentata</i> with other upland species associates such as <i>Ericameria nauseosa (= Chrysothamnus nauseosus)</i> and <i>Rhus trilobata</i>. The presence of <i>Artemisia</i>, a common dominant from surrounding desert uplands, in these floodplain gallery forests is an indicator of infrequent flooding, perhaps because of regulated streamflows, or because the channel is actively cutting down or away from the forest. Grasses can be well-represented to abundant and are typically dominated by upland species, such as <i>Sporobolus cryptandrus</i> and <i>Achnatherum hymenoides (= Oryzopsis hymenoides)</i>. Although a relatively dry type, some wetland indicator species still occasionally occur, such as <i>Schoenoplectus pungens (= Scirpus pungens), Distichlis spicata</i>, and <i>Muhlenbergia asperifolia</i>. Forbs are very scattered and low in diversity. As a keystone species, the reproduction of <i>Populus deltoides</i> after flooding (and sufficient subsequent base flows) is critical to the sustainability of this community. |
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