| Add/Drop |
Name
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Reference
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Plots↓
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Description |
Comm #7401
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A.2589
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accession code: VB.CC.1857.A2589
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7402
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V.D
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accession code: VB.CC.141.VD
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EcoArt 2002 |
0
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Graminoids or forbs usually <0.5 m tall when inflorescences are fully developed, generally contributing >50% of total herbaceous cover |
Comm #7403
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V.C
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accession code: VB.CC.142.VC
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EcoArt 2002 |
0
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Non-emergent graminoids and forbs structurally supported by water and rooted in substrate (e.g. pond weeds and water lilies) |
Comm #7404
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A.113
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accession code: VB.CC.902.A113
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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This giant forest alliance occurs in cold, snowy subalpine environments of high coastal mountains from Washington and British Columbia, but probably also occurs northward. Stands occur from 1000-1500 m in elevation, primarily west of the Cascade crest where maritime climate influence is strong and deep winter snowpacks are typical. Precipitation ranges from 150-400 cm annually, falling largely as snow, and snowpacks usually linger into June or later. These forests typically occur in protected habitats in upper montane or subalpine areas and have attained great age due to low fire and windthrow frequency. Sites are cold and moist, and found on mid to lower slopes, benches and bottoms with typically western and northern aspects. Substrates are moderately deep soils derived from colluvium, glacial outwash and volcanic ash, which overlie gneiss or schist. Soils are acidic, coarse-textured and often subirrigated, with a substantial organic component. These forests have a closed tree canopy over 50 m tall that is dominated by ~Tsuga mertensiana$ and ~Abies amabilis$. Stands are typically old-growth with multi-layered canopies and copious woody debris. Other common trees include ~Tsuga heterophylla, Chamaecyparis nootkatensis$ and ~Pseudotsuga menziesii$. The undergrowth is often somewhat depauperate because of poor light penetration at the forest floor, but may include a moderately sparse shrub layer composed of ~Rubus$ spp., ~Menziesia ferruginea, Vaccinium membranaceum$, and ~Vaccinium ovalifolium$. Shade-tolerant forbs and ferns, including ~Tiarella trifoliata var. unifoliata, Clintonia uniflora, Streptopus lanceolatus var. curvipes (= Streptopus roseus), Valeriana sitchensis, Gymnocarpium dryopteris$, and ~Athyrium filix-femina$, dominate the moderately sparse herbaceous layer. Diagnostic of this forest alliance is an upper tree canopy over 50 m tall that is dominated by~Tsuga mertensiana$ and ~Abies amabilis$. |
Comm #7405
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CEGL001090
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accession code: VB.CC.3689.CEGL001090
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #7406
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Pseudotsuga menziesii / Toxicodendron diversilobum Woodland
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accession code: VB.CC.21356.PSEUDOTSUGAMENZ
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Western Ecology Working Group of... |
0
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Comm #7407
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Bouteloua hirsuta - Digitaria californica Herbaceous Vegetation
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accession code: VB.CC.25024.BOUTELOUAHIRSUT
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Western Ecology Working Group of... |
0
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Comm #7408
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Aleutian Sparse Heath and Fell-Field
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accession code: urn:lsid:ecoobs.vegbank.org:commConcept:9006-{0B40ABFF-9000-410D-9168-3CCB901600C1}
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Western Ecology Working Group of... |
0
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Comm #7409
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Aleutian Rocky Headland and Sea Cliff
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accession code: urn:lsid:ecoobs.vegbank.org:commConcept:9005-{B1038ACF-7732-4269-894B-4EED37B15EF8}
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Western Ecology Working Group of... |
0
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Comm #7410
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Festuca (calligera, arizonica, brachyphylla) Herbaceous Vegetation
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accession code: VB.CC.31661.CEGL005500
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Western Ecology Working Group of... |
0
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This grassland association is currently described from Grand Canyon National Park in Arizona. More survey and classification work are needed to fully characterize this type. It occurs in high-elevation meadows typically in flat, low-level valley bottoms, or in wide open drainage bottoms, at 2550 to 2750 m (8350-9050 feet). Soils are silt loams and vary from dry to moist. This association is a purely herbaceous vegetation type and lacks tree and shrub cover. <i>Festuca</i> sp. (<i>Festuca calligera, Festuca arizonica, Festuca brachyphylla</i>) is the dominant component of the graminoid layer. <i>Muhlenbergia montana</i> consistently occurs and is more abundant on drier sites, while <i>Deschampsia caespitosa</i> can occur on more mesic sites. The presence of <i>Blepharoneuron tricholepis</i> is characteristic of this association as well. Forb species typically account for 15-20% total cover, and almost 50 different species may be present. <i>Potentilla hippiana, Achillea millefolium, Pseudocymopterus montanus</i>, and <i>Hymenoxys subintegra</i> are the most common forbs, while <i>Ranunculus cardiophyllus, Arenaria fendleri, Eriogonum racemosum, Antennaria rosulata</i>, and <i>Solidago nana</i> are also fairly common. Graminoids are typically dominant in this plant association; however, the forb component can be very well-developed and codominant on some sites. This plant community supports a uniquely southwestern floristic assemblage, but also hosts many higher-elevation or higher-latitude species from the Rocky Mountain region. |
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