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Thuja plicata / Carex disperma Swamp Forest | NatureServe Biotics 2019
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Name: Thuja plicata / Carex disperma Swamp Forest
Reference: NatureServe Biotics 2019
Description: This forest association is tentative and presently known from the west side of Glacier National Park, Montana. It is found on very wet sites, growing on a flat basin floor over alluvial substrates. The site is very poorly drained; surface ponding is evident throughout the growing season. The ground surface is hummocky, the hummocks about 2-3 dm above the water surface. Soils are peat. Elevation of the one known occurrence was 980 m (3210 feet). This is a swampy, forested association, with near equal dominance of <i>Thuja plicata, Picea engelmannii</i>, and <i>Tsuga heterophylla</i>. Other trees present are <i>Pinus monticola</i> and <i>Betula papyrifera</i>. Subcanopy trees are <i>Thuja plicata</i> and <i>Tsuga heterophylla</i>. The tall-shrub layer is abundant with <i>Alnus incana, Menziesia ferruginea</i>, and <i>Cornus sericea</i>. Other shrubs present are <i>Rhamnus alnifolia, Rosa gymnocarpa</i>, and <i>Vaccinium membranaceum</i>. <i>Thuja plicata, Picea engelmannii</i>, and <i>Tsuga heterophylla</i> saplings also occupy the shrub layer with 2-10% cover. The herbaceous layer is lush and dominated by <i>Carex disperma</i> with 43% cover. <i>Streptopus amplexifolius, Cicuta douglasii, Petasites frigidus var. sagittatus</i>, and <i>Pteridium aquilinum</i> were among the hygrophilous forbs. Several other herbaceous species are present, all indicators of moist to continually wet conditions. These include <i>Glyceria</i> sp., <i>Menyanthes trifoliata</i>, and <i>Athyrium filix-femina</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:34584-{A7041A08-DB5B-4F8D-9ADC-7C20BD701949}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 06-Apr-2012 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.732586 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL005931
  Translated: Western Red-cedar / Softleaf Sedge Swamp Forest
  Scientific: Thuja plicata / Carex disperma Swamp Forest
(convergence) and Synonyms:
(similar) Thuja plicata / Carex disperma Forest