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Abies grandis - Pseudotsuga menziesii East Cascades Forest Group | NatureServe Biotics 2019
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Name: Abies grandis - Pseudotsuga menziesii East Cascades Forest Group
Reference: NatureServe Biotics 2019
Description: This forested group occurs on the upper slopes of the eastern Cascades in Washington, south of Lake Chelan to Mount Hood in Oregon. These forests are dominated by a mix of <i>Pseudotsuga menziesii</i> with <i>Abies grandis</i>. Several other conifers can dominate or codominate, including <i>Pinus contorta, Pinus monticola</i>, and <i>Larix occidentalis</i>. <i>Acer circinatum, Cornus nuttallii, Linnaea borealis, Mahonia nervosa, Paxistima myrsinites, Rubus parviflorus, Spiraea betulifolia, Symphoricarpos hesperius</i>, and <i>Vaccinium membranaceum</i> are common shrub species. The composition of the herbaceous layer reflects local climate and degree of canopy closure and contains species more restricted to the Cascades, for example, <i>Achlys triphylla, Anemone deltoidea</i>, and <i>Vancouveria hexandra</i>. Elevations range from 610 to 1220 m (2000-4000 feet) in a very restricted range occupying less than 5% of the forested landscape in the eastern Cascades. This group typically occurs below the Pacific silver fir forests found along the crest of the Cascades, and occurs along rivers and in mesic "coves" which were historically protected from wildfires. Typically, stand-replacement fire-return intervals are 150-500 years with moderate-severity fire-return intervals of 50-100 years. These are very productive forests in the eastern Cascades which have been priority stands for timber production. This group is associated with a submesic climate regime with annual precipitation ranging from 100 to 200 cm (40-80 inches) and maximum winter snowpacks that typically melt off in spring at lower elevations. 
Accession Code: urn:lsid:vegbank.org:commConcept:40008-{411EE80B-7313-443E-B34B-097B71218759}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 09-Nov-2015 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.836562 NatureServe ExplorerNatureServe Explorer logo
  Code: G212
  Scientific: Abies grandis - Pseudotsuga menziesii East Cascades Forest Group