| Add/Drop |
Name
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Reference
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Plots↓
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Description |
Comm #12591
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A.2543
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accession code: VB.CC.1807.A2543
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12592
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CEGL002257
» more details
accession code: VB.CC.4772.CEGL002257
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12593
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Juglans microcarpa / Sorghastrum nutans Shrubland
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accession code: VB.CC.22582.JUGLANSMICROCAR
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Southeastern Ecology Working Gro... |
0
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This community occurs in intermittently to temporarily flooded streambeds and stream margins with headwaters in montane areas. Even when the streambed is dry, it is usually subirrigated; following rains, the streambed can be shallowly inundated for several weeks at a time. Woody vegetation is extremely variable in height and density, varying from shrubby growth to well-developed trees, and from an open canopy to widely scattered individuals. Juglans microcarpa is the most abundant and most characteristic woody species; others include Fraxinus velutina, Baccharis salicifolia, Fallugia paradoxa, and Ostrya knowltonii. The streambed and margins are dominated by Sorghastrum nutans, with other herbs including Schizachyrium scoparium var. scoparium (= Schizachyrium scoparium ssp. neomexicanum), Andropogon gerardii, Echinochloa muricata var. microstachya, Bothriochloa barbinodis (= var. barbinodis), Leptochloa dubia, and other scattered herbs, many typical of adjoining upland areas. |
Comm #12594
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Juglans major Temporarily Flooded Forest Alliance
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accession code: VB.CC.26995.JUGLANSMAJORTEM
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Western Ecology Working Group of... |
0
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This alliance occurs in and adjacent to streambeds in the American Southwest. It is typically found along rubble-bottomed perennial and near-perennial streams, dry rocky ravines, arroyos, and streambeds from approximately 700-2300 m elevation. Juglans major dominates the canopy with an average of 75% cover. Acer negundo codominants in nearly all of the Arizona stands. Generally, Juglans major could occur with any of the following codominant trees or tall shrubs: Sapindus saponaria, Platanus wrightii, Platanus occidentalis, Pinus edulis, or Quercus spp. Other important shrubs and vines include Frangula californica (= Rhamnus californica), Rhus glabra, Rhus trilobata, and Vitis arizonica. Common graminoid species are Bouteloua curtipendula, Bouteloua gracilis, and Carex spp. Forb cover was reported to be sparse and typically weedy. No other information is currently available. |
Comm #12595
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Kalmia microphylla / Carex nigricans Dwarf-shrubland
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accession code: VB.CC.23672.KALMIAMICROPHYL
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Western Ecology Working Group of... |
0
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This association may be widespread throughout the western United States and western Canada. It is currently known from California, Washington, Oregon, Montana, and British Columbia. This is a dwarf-shrubland association found in moist subalpine and alpine meadows, snowbeds, lake margins, and other low-gradient depressions of the northern Rockies and Pacific ranges from 5200-13,000 feet in elevation. These habitats are cold and snowy, with snowfields lingering into June or later. Soils are frigid, derived from bedrock or aggraded alluvium, usually high in organic matter, and strongly acidic. These communities are often associated with hummocky topography, which provides a juxtaposition of saturated and somewhat drained microhabitats. Water tables are often at or near the surface for much of the growing season, and organic decomposition is slow. This association is typified by a dominant dwarf-shrub layer of Kalmia microphylla. Other ericaceous shrubs, including Phyllodoce empetriformis, Phyllodoce breweri, Ledum glandulosum, and Vaccinium spp., are common associates. Dwarf Salix spp. may also be present, such as Salix farriae or Salix arctica. The herbaceous layer is typically dominated by graminoids, of which Carices usually predominate. Carex nigricans is the dominant species, with cover ranging from 10% to well over 50% or more. Carex scopulorum, Carex spectabilis, Carex aquatilis, Carex canescens, and Carex pellita (= Carex lanuginosa) are especially common. Grasses, such as Deschampsia caespitosa, Danthonia intermedia, and Phleum alpinum, may also be locally abundant. Mesic to hygric forbs are usually scattered through the graminoid matrix, including Symphyotrichum spathulatum (= Aster occidentalis), Oreostemma alpigenum (= Aster alpigenus), Pedicularis groenlandica, Caltha leptosepala, Parnassia fimbriata, Trollius laxus, Veronica spp., Gentiana spp., Dodecatheon spp., and Epilobium spp. The moss layer is often virtually continuous but can also be only a few percent. |
Comm #12596
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Populus deltoides / Artemisia tridentata Woodland
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accession code: VB.CC.28122.POPULUSDELTOIDE
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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 is probably present in adjacent southeastern Utah and 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 (Aquic and Typic Ustifluvents). Inceptisols can occur on higher terraces where soil development has not been disrupted by flooding (Fluventic Ustochrept). Mature Populus deltoides canopies are generally open (ranging between 30 and 40% cover), with Juniperus scopulorum, Elaeagnus angustifolia, and Salix amygdaloides in the subcanopy. The shrub layer is dominated by Artemisia tridentata with other upland species associates such as Ericameria nauseosa (= Chrysothamnus nauseosus) and Rhus trilobata. The presence of Artemisia, 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 aridland species such as Sporobolus cryptandrus and Achnatherum hymenoides (= Oryzopsis hymenoides). Although a relatively dry type, some wetland indicator species still occasionally occur, such as Schoenoplectus pungens (= Scirpus pungens), Distichlis spicata, and Muhlenbergia asperifolia. Forbs are very scattered and low in diversity (16 species), of which 75% (12 species) are native. As a keystone species, the reproduction of Populus deltoides after flooding (and sufficient subsequent base flows) is critical to the sustainability of this community. |
Comm #12597
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CEGL003592
» more details
accession code: VB.CC.5550.CEGL003592
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12598
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CEGL001979
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accession code: VB.CC.4532.CEGL001979
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12599
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CEGL003024
» more details
accession code: VB.CC.5235.CEGL003024
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #12600
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CEGL002617
» more details
accession code: VB.CC.5025.CEGL002617
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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