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Name
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Reference
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Plots↓
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Description |
Comm #1861
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Atriplex spinifera Wet Shrubland [Placeholder]
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accession code: urn:lsid:vegbank.org:commConcept:31916-{6C6C0C64-9B2C-43C3-BCDC-FCE57EDDAC83}
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NatureServe Biotics 2019 |
7
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This description is based on occurrences in the Great Valley ecoregion of California. Additional global information will be added as it becomes available. <i>Atriplex spinifera</i> is dominant in the shrub canopy, often occurring with <i>Suaeda moquinii</i> and <i>Isocoma acradenia</i>. The canopy is open, and the herbaceous layer is variable, with seasonal annuals reaching high cover. Stands occur on alluvial fans and old lakebeds perched above current drainages. Soils are moderately sandy clay loams to fine, silty clays that may be carbonate rich. |
Comm #1862
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Cercocarpus intricatus Slickrock Sparse Vegetation
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accession code: urn:lsid:vegbank.org:commConcept:31879-{FD476EC8-F8C6-4F54-AA24-9D14CBA7DC1F}
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NatureServe Biotics 2019 |
7
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This sparse shrubland association occurs on exposed sandstone slickrock in the Colorado Plateau. Total vegetation cover is less than 15% and often less than 5%. <i>Cercocarpus intricatus</i> is dominant or codominant, with lesser cover by other shrubs such as <i>Amelanchier utahensis, Arctostaphylos patula, Artemisia bigelovii, Cercocarpus montanus, Glossopetalon spinescens var. meionandrum, Ephedra viridis</i>, or <i>Fraxinus anomala</i>. The herbaceous layer is diverse, variable and low in cover. Occasional dwarfed individuals (often only 1-1.5 m tall) of <i>Pinus edulis</i> or <i>Juniperus osteosperma</i> may occur with low cover. The herbaceous cover is sparse and frequently includes <i>Achnatherum hymenoides, Bouteloua gracilis</i>, and <i>Pleuraphis jamesii</i>. Forbs are variable among plots and only have trace cover. Stands are restricted to exposures of massive sandstones such as on the Colorado Plateau. Elevations range between 1196 and 2348 m (3920-7700 feet), while slopes and aspects vary widely. The density of the vegetation is limited by the availability of crevices and shallow depressions where sandy soil collects and plants can root. Soils are rapidly drained loamy sands derived from Navajo sandstone, White Rim sandstone of the Cutler Group, or Cedar Mesa sandstone. Most of the surface is sandstone, sometimes with high cover of lichens. Litter and biological soil crusts have sparse to low cover. |
Comm #1863
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Salix bebbiana Temporarily Flooded Shrubland Alliance
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accession code: VB.cc.30829.SALIXBEBBIANATE
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NVC 2004 |
7
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Comm #1864
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Hilaria belangeri Shrub Herbaceous Alliance
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accession code: VB.cc.30431.HILARIABELANGER
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NVC 2004 |
7
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Acer negundo – Salix gooddingii
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accession code:
NOT CURRENTLY ACCEPTED
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CDFW Natural Communities List |
7
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Platanus racemosa – Quercus lobata Association
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accession code:
NOT CURRENTLY ACCEPTED
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Great Valley Classification |
7
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Populus fremontii – Acer negundo Association
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accession code:
NOT CURRENTLY ACCEPTED
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MCV2 |
7
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Quercus lobata / Herbaceous Semi-Riparian Association
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accession code:
NOT CURRENTLY ACCEPTED
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MCV2 |
7
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Comm #1865
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Spiraea alba Shrubland
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accession code: VB.CC.37500.CEGL006595
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7
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This successional shrub swamp occurs on temporarily to semipermanently flooded soils in the Allegheny Mountains region of West Virginia, at elevations between 900 and 1130 m. It is a small-patch type that occupies flat to gently sloping floodplains (0-0.5° slopes) with occasional discontinuous fingers extending up tributary streams with slopes as steep as 7°. It occurs on recovering beaver meadows and along low-gradient headwater streams that were logged, grazed, or burned within the last 80 years. Entrenched meandering stream channels and overflow channels bisect the community. This type persists on the landscape as a result of beaver activity and (to a lesser extent) natural flood regimes. It is probably more widespread now than in the past when forests covered much of its current habitat. Where natural succession is unhindered, some stands will likely recover to forested swamps of high conservation value. Soil texture is variable and may consist of moderately to poorly drained silt loam, sandy loam, clay, or shallow peat, underlain by alluvial deposits, including woody debris. Mean soil pH is 4.2, and mean pore water pH is 6.2. The unvegetated surface is predominantly litter, with an average of 8% standing water and 10% bare soil. The community is characterized by a dense tall-shrub layer strongly dominated by <i>Spiraea alba</i> with occasional presence of <i>Salix sericea, Viburnum recognitum, Ilex verticillata, Hypericum densiflorum, Viburnum nudum var. cassinoides</i>, and <i>Alnus incana ssp. rugosa</i>. The short-shrub layer is sparse or absent. The herbaceous layer is typically concentrated in small openings. It is variable in composition but often includes <i>Juncus effusus, Carex scoparia var. scoparia, Galium tinctorium, Dichanthelium clandestinum, Carex gynandra, Impatiens capensis, Hypericum mutilum, Hypericum ellipticum, Lycopus uniflorus var. uniflorus, Calamagrostis canadensis var. canadensis, Rubus hispidus</i>, and <i>Glyceria striata</i>. Nonvascular plants are present in trace amounts, usually including <i>Sphagnum</i> spp. Mean species richness of all vascular plants and any nonvascular plants with cover >1% is 26 taxa per 400 square meters for seven plots in West Virginia. |
Comm #1866
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Bursera microphylla Shrubland Alliance
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accession code: VB.cc.29949.BURSERAMICROPHY
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NVC 2004 |
7
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