Name:
Populus tremuloides - Pinus ponderosa Rocky Mountain Forest
Reference:
NatureServe Biotics 2019
Description:
This mixed evergreen-deciduous forest association is described on lower montane slopes and plateaus in the Rocky Mountains west to the Markagunt Plateaus and Uinta Mountains at elevations ranging from 2380-2850 m. Soils are often coarse-textured loams derived from alluvium and colluvium. Parent materials are typically igneous and sedimentary rocks. The vegetation is characterized by a moderately open to closed, mixed evergreen-deciduous tree canopy that is codominated by <i>Populus tremuloides</i> and <i>Pinus ponderosa</i>, but may include occasional <i>Pinus contorta, Pinus flexilis</i>, or <i>Pseudotsuga menziesii</i>. The sparse to moderately dense understory may be complex and include tall-shrub, short-shrub and herbaceous layers. If present, shrub layers are open to moderately dense. <i>Juniperus communis</i> is typically the most frequent shrub species; however, <i>Artemisia tridentata, Mahonia repens, Prunus virginiana, Quercus gambelii, Ribes</i> spp., <i>Rosa woodsii</i>, and <i>Symphoricarpos oreophilus</i> may be present to abundant. The sparse to moderately dense herbaceous layer is often a relatively even mixture of graminoid species, such as <i>Bromus anomalus, Bromus porteri, Carex geyeri, Carex rossii, Elymus elymoides, Festuca idahoensis, Koeleria macrantha, Poa fendleriana</i>, and <i>Hesperostipa comata</i>, and forb species, such as <i>Achillea millefolium, Astragalus miser, Erigeron speciosus, Geranium viscosissimum, Lathyrus lanszwertii var. leucanthus, Lupinus argenteus, Penstemon watsonii, Thermopsis</i> spp., and <i>Vicia americana</i>. Introduced species <i>Poa pratensis</i> and <i>Taraxacum officinale</i> are common on some sites.
Accession Code:
urn:lsid:vegbank.org:commConcept:29450-{807E8D0A-CCF1-40B0-9452-344DF48B1AB4}
Plot-observations of this Community Concept:
0
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