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Tsuga mertensiana - Callitropsis nootkatensis - Picea sitchensis / Veratrum viride - Nephrophyllidium crista-galli Forest | NatureServe Biotics 2019
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Name: Tsuga mertensiana - Callitropsis nootkatensis - Picea sitchensis / Veratrum viride - Nephrophyllidium crista-galli Forest
Reference: NatureServe Biotics 2019
Description: This association is located within a subalpine Wet Hypermaritime Mountain Hemlock Subzone (MHwh) along the outer coast from approximately 500 to 1100 m above sea level. It occurs on broad ridge crests and moderate upper to lower slopes, where topographic conditions cause slowly moving seepage waters to saturate the shallow soils. Soil nutritional status in this community is widely variable from poor to rich, but this is not well-defined floristically, due in large part to the subalpine wet hypermaritime climate and the predominantly wet, poorly aerated soils. This low-productivity forest community is dominated by <i>Tsuga mertensiana</i>, with variable amounts of <i>Callitropsis nootkatensis</i> and <i>Tsuga heterophylla</i>. In addition to regeneration of the above tree species, the sparse to moderate cover shrub layer includes <i>Vaccinium ovalifolium</i> and <i>Vaccinium alaskaense</i>. Characteristic species in the lightly developed herb layer include moderate cover of <i>Veratrum viride, Calamagrostis nutkaensis</i> (drier sites), and low cover of <i>Nephrophyllidium crista-galli</i>. Other commonly occurring species include <i>Coptis aspleniifolia, Rubus pedatus, Cornus canadensis</i>, scattered <i>Caltha leptosepala</i>, and <i>Carex</i> spp. Common species in the well-developed moss layer are <i>Rhytidiadelphus loreus</i> (dominant), <i>Scapania</i> spp., <i>Hylocomium splendens</i>, and <i>Rhizomnium glabrescens</i>. A number of species which should be either absent or of insignificant cover include <i>Lysichiton americanus, Leptarrhena pyrolifolia, Phyllodoce empetriformis, Cassiope mertensiana</i>, and <i>Harrimanella stelleriana</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:31741-{EF2EE48D-AACB-41DD-AD7B-4BF62BCB475A}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 14-Sep-2005 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.787623 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL002839
  Translated: Mountain Hemlock - Alaska-cedar - Sitka Spruce / Green False Hellebore - Deer-cabbage Forest
  Scientific: Tsuga mertensiana - Callitropsis nootkatensis - Picea sitchensis / Veratrum viride - Nephrophyllidium crista-galli Forest
(convergence) and Synonyms:
(similar) Tsuga mertensiana - Chamaecyparis nootkatensis - Picea sitchensis / Veratrum viride - Nephrophyllidium crista-galli Forest