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Pinus contorta var. murrayana - Populus tremuloides / Artemisia tridentata / Poa pratensis Forest | NatureServe Biotics 2019
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Name: Pinus contorta var. murrayana - Populus tremuloides / Artemisia tridentata / Poa pratensis Forest
Reference: NatureServe Biotics 2019
Description: This forest association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. This forest grows between 2130 and 2740 m (7000-9000 feet) of elevation on north and east aspects. Stands are found in valley bottoms or along streams, with soils that are seasonally or permanently flooded. Soils are sands to silty loams derived from granite. This forest is characterized by a fairly continuous canopy of <i>Populus tremuloides</i> and <i>Pinus contorta</i> between 15-30 m of height. Individuals of <i>Pinus contorta</i> are sometimes emergent to 50 m. Occasionally <i>Pinus jeffreyi</i> may also be present as trees or saplings. The shrub layer is open, with <i>Artemisia tridentata</i> a diagnostic species. Other important shrubs may include <i>Rosa woodsii</i> and/or <i>Symphoricarpos rotundifolius</i>. The ground layer is dominated by graminoids. Most stands contain <i>Poa pratensis</i> and <i>Bromus carinatus</i>. Other graminoids which may be present at low cover values include <i>Bromus tectorum</i> (exotic), <i>Elymus elymoides</i>, and/or <i>Leymus cinereus</i>. The herbaceous layer is sparse but relatively diverse. <i>Wyethia mollis, Allium bisceptrum, Calochortus superbus, Iris missouriensis</i>, and/or <i>Maianthemum stellatum</i> all occur. 
Accession Code: urn:lsid:vegbank.org:commConcept:36708-{26FFB924-941B-4DFA-910D-637C50101A71}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 05-May-2010 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.688595 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL008669
  Translated: Sierra Lodgepole Pine - Quaking Aspen / Big Sagebrush / Kentucky Bluegrass Forest
  Scientific: Pinus contorta var. murrayana - Populus tremuloides / Artemisia tridentata / Poa pratensis Forest
(convergence) and Synonyms:
(similar) Pinus contorta var. murrayana - Populus tremuloides / Artemisia tridentata / Poa pratensis Forest
(similar) Pinus contorta var. murrayana - Populus tremuloides / Artemisia tridentata / Poa pratensis Forest