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Pseudotsuga menziesii - Abies grandis / Holodiscus discolor / Melica subulata Forest | NatureServe Biotics 2019
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Name: Pseudotsuga menziesii - Abies grandis / Holodiscus discolor / Melica subulata Forest
Reference: NatureServe Biotics 2019
Description: This association is currently described from San Juan Island National Historical Park, Washington. Additional global information will be added when available. This association is limited to dry climatic areas and occurs on dry sites which appear to be poor to medium in nutrients. It is most commonly found on upper, gentle to moderate slopes. Parent materials are glacial till or residuum. Soils are likely to be somewhat shallow. <i>Pseudotsuga menziesii</i> dominates the upper canopy. <i>Abies grandis</i> is always present and often dominates tree regeneration. <i>Pseudotsuga menziesii</i> can also be numerous. The shrub layer is usually sparse to moderate in density. <i>Rosa gymnocarpa</i> and <i>Lonicera hispidula</i> are always present and <i>Holodiscus discolor, Rubus ursinus</i>, and <i>Symphoricarpos albus</i> are common. <i>Festuca occidentalis</i> and <i>Melica subulata</i> are usually prominent to codominant. <i>Festuca occidentalis</i> is always present. <i>Trientalis borealis ssp. latifolia</i> (occasionally prominent), <i>Bromus vulgaris, Galium aparine, Galium triflorum, Osmorhiza berteroi, Pteridium aquilinum var. pubescens</i> (occasionally prominent), <i>Polystichum munitum</i>, and <i>Goodyera oblongifolia</i> are usually present. Fire is the primary natural disturbance. <i>Abies grandis</i> is expected to increase over time in the absence of disturbance. Evidence suggests that many of these stands were <i>Pseudotsuga menziesii</i> savannas prior to fire suppression and have increased dramatically in tree density since pre-settlement. 
Accession Code: urn:lsid:vegbank.org:commConcept:35631-{4B62D961-7F64-4055-BA9A-DA37769F0939}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 10-Jul-2018 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.982698 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL007385
  Translated: Douglas-fir - Grand Fir / Oceanspray / Alaska Oniongrass Forest
  Scientific: Pseudotsuga menziesii - Abies grandis / Holodiscus discolor / Melica subulata Forest