| Add/Drop |
Name
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Reference
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Plots↓
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Description |
Comm #13371
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CEGL001366
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accession code: VB.CC.3950.CEGL001366
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #13372
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CEGL000102
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accession code: VB.CC.2729.CEGL000102
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #13373
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Picea (engelmannii x glauca, engelmannii) / Clintonia uniflora Forest
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accession code: VB.CC.33165.CEGL000406
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Western Ecology Working Group of... |
0
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Comm #13374
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Tsuga mertensiana - Chamaecyparis nootkatensis / Vaccinium ovalifolium - Gaultheria shallon Woodland
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accession code: VB.CC.35981.CEGL003211
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DeMeo, T., J. Martin, and R. A. ... |
0
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Comm #13375
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Picea (engelmannii x glauca, engelmannii) / Packera streptanthifolia Forest
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accession code: VB.CC.33656.CEGL000414
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Western Ecology Working Group of... |
0
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Comm #13376
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Pseudotsuga menziesii / Quercus x pauciloba Forest
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accession code: VB.CC.33295.CEGL000455
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Western Ecology Working Group of... |
0
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Comm #13377
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CEGL001411
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accession code: VB.CC.3995.CEGL001411
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #13378
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IV.B.1
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accession code: VB.CC.202.IVB1
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EcoArt 2002 |
0
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Comm #13379
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Populus tremuloides - Abies lasiocarpa / Thalictrum fendleri Forest
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accession code: VB.CC.32838.CEGL000534
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Western Ecology Working Group of... |
0
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Comm #13380
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Populus tremuloides / Heracleum maximum Forest
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accession code: VB.CC.31137.CEGL000595
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Western Ecology Working Group of... |
0
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This association has been extensively documented from the East Front of the Rocky Mountains of Montana and into Alberta, on sites ranging from 1290-1750 m (4200-5750 feet). It occurs as small- to large-patch types in narrow mountain valleys, glacial moraine depressions underlain by clay lenses and often filled with loessal soils, lee slope position also having deep loess deposits, springs or seeps on hillslopes, and as a fringe about glacial kettle lakes. The overstory is dominated by <i>Populus tremuloides</i> with an occasional <i>Populus balsamifera ssp. trichocarpa</i> and seedling/saplings of several conifer species scattered and showing little potential to eventually dominate. The dominant aspect of the undergrowth is that of a rich assortment of tall forbs, but occasionally <i>Symphoricarpos albus</i> comprises a conspicuous layer below the forbs. Forbs both diagnostic and usually dominant in various combinations include <i>Osmorhiza occidentalis, Angelica arguta</i> (or <i>Angelica dawsonii</i>), <i>Heracleum maximum (= Heracleum lanatum), Geranium richardsonii, Viola canadensis, Veratrum viride, Galium triflorum</i>, and <i>Actaea rubra</i>. Among the tall graminoids, <i>Elymus glaucus</i> often has the greatest canopy cover and highest constancy; others include <i>Bromus carinatus, Calamagrostis canadensis, Schizachne purpurascens</i>, and <i>Cinna latifolia</i>. This type appears to be a self-perpetuating community as inferred by tree population age-class structure. Charcoal has not been found in the soil of these sites which indicates a lack of fire and points to long-term site occupancy by <i>Populus tremuloides</i> in a landscape where the prevailing model of succession predicts (erroneously) these sites to be eventually dominated by conifers. Conifers establish, if at all, at a glacial rate. This association is considered premier grizzly bear habitat in the spring and early summer and excellent wildlife habitat in general. |
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