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Tsuga heterophylla / Ledum glandulosum / Carex obnupta - Lysichiton americanus Treed Bog | NatureServe Biotics 2019
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Name: Tsuga heterophylla / Ledum glandulosum / Carex obnupta - Lysichiton americanus Treed Bog
Reference: NatureServe Biotics 2019
Description: This mid-seral to climax association occurs on perennially saturated or flooded peat soils adjacent to open mire and shrub swamps. Restricted to coastal Oregon, this vegetation is distinguished from similar associations farther north by the dominance of <i>Ledum glandulosum</i> instead of <i>Ledum groenlandicum</i>. The tree layer is dominated by <i>Tsuga heterophylla</i> with up to 60% cover. <i>Thuja plicata</i> is the second most abundant species of tree, but most specimens are suppressed in the waterlogged soils, older ones are dying, and no old-growth is evident. Other species present in lesser amounts are <i>Picea sitchensis</i> and <i>Pinus contorta var. contorta</i>. The dense shrub layer is dominated by <i>Gaultheria shallon</i> and <i>Ledum glandulosum</i>, both with a constancy of 100% and cover up to 40%. <i>Vaccinium ovatum, Vaccinium parvifolium</i>, and <i>Morella californica</i> are present in lesser amounts. Both trees and shrubs favor elevated microsites on decaying logs, stumps, and old root wads. Wetland species dominate the herb layer, with <i>Carex obnupta</i> and <i>Lysichiton americanus</i> present with constancy of 100% but with <i>Carex</i> being more abundant. Other wetland species such as <i>Juncus</i> sp., <i>Oenanthe sarmentosa, Blechnum spicant</i>, and <i>Athyrium filix-femina</i> are typical. The moss layer is conspicuous, with <i>Sphagnum palustre</i> always present and covering up to 20% of the surface. Stands are subject to windthrow in severe winter storms, which frequently occur. 
Accession Code: urn:lsid:vegbank.org:commConcept:29386-{74F0F279-58E6-4528-8DE9-FA84CCFDCA3D}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.687402 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000477
  Translated: Western Hemlock / Western Labrador-tea / Slough Sedge - American Skunk-cabbage Treed Bog
  Scientific: Tsuga heterophylla / Ledum glandulosum / Carex obnupta - Lysichiton americanus Treed Bog
(convergence) and Synonyms:
(similar) CEGL000477
(similar) Tsuga heterophylla / Ledum glandulosum / Carex obnupta - Lysichiton americanus Forest
(similar) Tsuga heterophylla / Ledum glandulosum / Carex obnupta - Lysichiton americanus Forest