Name:
Pinus ponderosa / Symphoricarpos albus Riparian Woodland
Reference:
NatureServe Biotics 2019
Description:
This riparian woodland association is found along creeks around the periphery of the Columbia Basin in Washington, Oregon and Idaho, primarily along the northern and southeastern edges. These are generally floodplain woodlands at low to mid elevations, in low-gradient valleys, or on terraces in narrower valleys, ranging from 4.5 m (15 feet) to over 305 m (1000 feet) wide. Streams are generally small, ranging from 1.5 to 9 m (5-30 feet) wide. Stands are dominated by <i>Pinus ponderosa</i> in the overstory, generally the only tree, averaging 36% cover. Rarely <i>Pseudotsuga menziesii, Populus tremuloides, Abies grandis</i>, or <i>Juniperus occidentalis</i> are present. <i>Symphoricarpos albus</i> dominates the understory, with 34% cover. In some stands, <i>Crataegus douglasii</i> may also be an important understory tall shrub, and <i>Prunus virginiana</i> or <i>Rosa</i> species are also not uncommon. Forbs and grasses dominate the forb layer. Most stands have been impacted by cattle, and as a result, <i>Poa pratensis</i> is dominant, along with other invasive grasses such as <i>Dactylis glomerata</i> and <i>Bromus orcuttianus</i>. However, native grass species, including <i>Elymus glaucus, Elymus trachycaulus, Calamagrostis rubescens</i>, or <i>Bromus carinatus</i>, are often present. Important forbs include <i>Maianthemum stellatum, Fragaria virginiana, Galium boreale</i>, and <i>Achillea millefolium</i>.
Accession Code:
urn:lsid:vegbank.org:commConcept:29775-{2BFCFC97-895E-4959-9459-9ED958B25827}
Plot-observations of this Community Concept:
0
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