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Picea sitchensis - Tsuga heterophylla / Rubus spectabilis / Dryopteris expansa Forest | NatureServe Biotics 2019
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Name: Picea sitchensis - Tsuga heterophylla / Rubus spectabilis / Dryopteris expansa Forest Reference: NatureServe Biotics 2019 Description: The stands consist of moderately open uneven-aged <i>Picea sitchensis</i>. <i>Rubus spectabilis</i>, the diagnostic understory species, dominates the tall-shrub layer, and <i>Alnus viridis ssp. sinuata</i> forms a significant component in some stands. Species composition and cover are highly variable in the forb, graminoid, and fern layers. In many stands, bryophytes form a carpet consisting mainly of <i>Hylocomium splendens, Rhizomnium glabrescens</i>, and <i>Rhytidiadelphus loreus</i>. As described from Cooper River Delta, Alaska, this association is a major type occurring on alluvial surfaces, formed on outwash plains, and on coastal dune crests or uplifted dunes. It occurs as stringers, broad expanses of forest or inclusions within forests. The sites are typically well-drained, although on outwash plains during high riverflows, they may be inundated. Some sites may be sufficiently elevated above the river to avoid flooding. The surface topography is typically level on outwash plains and undulating on dune systems. The soils on the outwash plains are deep, well-drained alluvium. They are characterized by a thin to thick humic layer and weakly developed mineral horizons. Mottling was noted in most of the soil profiles. The soils on dunes are deep, well-drained eolian sand.  Accession Code: urn:lsid:vegbank.org:commConcept:32138-{891B0A00-DD82-492E-987B-8C792861C98B} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2005 to: ongoing
	status: accepted Community's Parent: Tsuga heterophylla - Picea sitchensis Alaskan Swamp Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.684376 NatureServe Explorer   Code: CEGL003255   Translated: Sitka Spruce - Western Hemlock / Salmonberry / Spreading Woodfern Forest   Scientific: Picea sitchensis - Tsuga heterophylla / Rubus spectabilis / Dryopteris expansa Forest (convergence) and Synonyms: (similar) CEGL003255 (similar) Picea sitchensis / Rubus spectabilis Woodland (similar) Picea sitchensis / Rubus spectabilis Woodland