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Name
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Reference
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Plots↓
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Description |
Comm #11351
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Abies lasiocarpa - Picea engelmannii / Vaccinium membranaceum Rocky Mountain Forest
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accession code: VB.CC.32063.CEGL000341
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Western Ecology Working Group of... |
0
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This is a cool and moderately moist forest, known from southwestern Montana, northern and eastern Idaho, western Wyoming, and northern Utah. Rocky Mountain is in the name to distinguish it from similar types in the Cascades and on the Olympic Peninsula. This association occurs generally on north- and northeast-facing slopes, although it has been documented to occur on any aspect. Slopes are gentle to quite steep, and it can occur on flat cool benches. Elevational range is 1680 to 2685 m (5500-8800 feet). Soils are acidic, well-drained to moderately well-drained gravelly loams to gravelly clays. This forest is dominated by <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> in the overstory tree canopy. We exclude stands dominated in the overstory canopy by <i>Pinus contorta</i> or <i>Pseudotsuga menziesii</i> that may have <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> in the subcanopy. <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> combined cover occupies at least 25% of the overstory canopy in mixed conifer stands. <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> create a codominant canopy. Occasionally <i>Abies lasiocarpa</i> is present only in the subcanopy, with <i>Picea engelmannii</i> the dominant overstory conifer. Other conifers often present include <i>Pinus contorta</i> and <i>Pseudotsuga menziesii</i>. <i>Pinus albicaulis, Larix occidentalis</i>, and <i>Picea glauca</i> can occur in stands in the northern part of its range. Shrub canopy is 1-2 feet tall, dominated by discontinuous to continuous cover of <i>Vaccinium membranaceum</i>. <i>Vaccinium scoparium</i> may be present in near equal amounts. This association is differentiated from similar types by a lack of <i>Xerophyllum tenax</i> (although it may be present, it is never abundant) and clear dominance of <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> in the overstory canopy. |
Comm #11352
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Artemisia tridentata ssp. tridentata - Grayia spinosa Shrubland
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accession code: VB.CC.34621.CEGL001004
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Western Ecology Working Group of... |
0
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Comm #11353
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CEGL002447
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accession code: VB.CC.4888.CEGL002447
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11354
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CEGL002448
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accession code: VB.CC.4889.CEGL002448
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11355
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CEGL001288
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accession code: VB.CC.3874.CEGL001288
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11356
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CEGL001289
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accession code: VB.CC.3875.CEGL001289
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11357
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Abies magnifica / Ribes viscosissimum Forest
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accession code: VB.CC.33351.CEGL000347
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Western Ecology Working Group of... |
0
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These late-seral subalpine forests occur in the North Coast, Klamath, Cascade ranges, and Sierra Nevada of the Pacific Northwest. Elevations range from 1400-2700 m. They are adapted to deep winter snow and dry summer. Stands are found on shallow, well-drained soils on slopes and raised stream benches on all aspects. The open to closed canopy (40-100% cover) of coniferous trees is less than 60 m in height and dominated by <i>Abies magnifica</i> in both the canopy and subcanopy. Other trees in the canopy may include <i>Abies concolor, Pinus contorta var. murrayana, Pinus monticola</i>, and <i>Tsuga mertensiana</i>. A sparse to moderately dense (10-40% cover) short-shrub layer (2-5 m tall) is usually present and typically includes the broadleaf deciduous shrub <i>Ribes viscosissimum</i>, which is diagnostic for this association. Other shrubs may include <i>Symphoricarpos rotundifolius, Symphoricarpos mollis, Ribes montigenum, Ribes cereum, Spiraea splendens, Sambucus racemosa</i>, and <i>Arctostaphylos nevadensis</i>. The herbaceous layer is generally sparse, but may be diverse, commonly including <i>Eucephalus breweri (= Aster breweri), Monardella odoratissima, Gayophytum ramosissimum, Pedicularis semibarbata, Pyrola picta</i>, and <i>Poa bolanderi</i>. The lichen <i>Letharia vulpina (= Evernia vulpina)</i> is a constant species in these stands and is uncommon elsewhere. These stands differ from other <i>Abies</i> species stands by the lack of <i>Picea</i> in the understory. |
Comm #11358
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Umbilicaria mammulata Nonvascular Alliance
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accession code: VB.CC.21331.UMBILICARIAMAMM
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Southeastern Ecology Working Gro... |
0
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This alliance consists of vegetation dominated by Umbilicaria mammulata, of relatively moist rock outcrops. This vegetation occurs where periodic seepage occurs on acidic rock outcrops. Individual occurrences can be as large as an acre. Vascular plants are generally sparse or absent, though trees of adjacent forest communities often shade the outcrop community for much of the day. |
Comm #11359
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Abies concolor / Physocarpus malvaceus Forest
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accession code: VB.CC.25682.ABIESCONCOLORPH
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Western Ecology Working Group of... |
0
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Comm #11360
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Carex nebrascensis Slope Herbaceous Vegetation
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accession code: VB.CC.26014.CAREXNEBRASCENS
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Western Ecology Working Group of... |
0
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