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Abies concolor - Pseudotsuga menziesii / Lathyrus lanszwertii var. leucanthus Forest | Western Ecology Working Group of...
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Name: Abies concolor - Pseudotsuga menziesii / Lathyrus lanszwertii var. leucanthus Forest Reference: Western Ecology Working Group of... Description: These coniferous forests have been described from the mountains of northern Arizona and northern New Mexico at elevations of 2591-2866 m. The association is found mainly on northern slopes. Soils are constantly moist and may be derived from various substrates, mainly volcanics. The evergreen needle-leaved tree canopy is dominated by either or both <i>Abies concolor</i> and <i>Pseudotsuga menziesii</i>. <i>Populus tremuloides</i> is important in disturbed stands and may have up to 15% canopy cover. Both <i>Pinus flexilis</i> and <i>Pinus ponderosa</i> may be present in younger stands. The shrub layer is generally sparse but may have up to 25% canopy cover composed of <i>Mahonia repens</i> with lesser amounts of <i>Symphoricarpos oreophilus, Lonicera arizonica, Juniperus communis</i>, and <i>Paxistima myrsinites</i>. The herbaceous layer cover is variable (5-50%). <i>Lathyrus lanszwertii var. leucanthus (= Lathyrus lanszwertii var. arizonicus)</i> dominates the herb layer with cover up to 20%. Other species include <i>Maianthemum stellatum, Prosartes trachycarpa (= Disporum trachycarpum), Thalictrum fendleri, Poa fendleriana, Carex siccata (= Carex foenea), Carex geyeri, Ligusticum porteri</i>, and <i>Thermopsis divaricarpa (= Thermopsis pinetorum)</i>. Because of the abundance of <i>Populus tremuloides</i>, fire may be necessary to maintain this association. Older stands are characterized by increased coverage of the shade-tolerant, fire-susceptible <i>Abies concolor</i>. This association can be distinguished from other mesic <i>Abies concolor - Pseudotsuga menziesii</i> forests by the dominance of <i>Lathyrus lanszwertii var. leucanthus</i> in the herbaceous layer.  Accession Code: VB.CC.34194.CEGL000250 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.685857 NatureServe Explorer   Translated: White Fir - Douglas-fir / Nevada Pea Forest   Scientific: Abies concolor - Pseudotsuga menziesii / Lathyrus lanszwertii var. leucanthus Forest   Code: CEGL000250