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Picea sitchensis Riparian Forest Alliance | NatureServe Biotics 2019
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Name: Picea sitchensis Riparian Forest Alliance Reference: NatureServe Biotics 2019 Description: This alliance consists of lowland coastal and foothill riparian forests dominated by <i>Picea sitchensis</i> or other conifer species such as <i>Tsuga heterophylla</i> or <i>Pseudotsuga menziesii</i>. Understory species are flood-tolerant, such as <i>Alnus viridis, Oplopanax horridus</i>, and <i>Rubus spectabilis</i>. The undergrowth is typically dense with a moderate to dense short-shrub canopy dominated by <i>Cornus sericea, Rubus spectabilis, Oplopanax horridus, Salix hookeriana, Salix sitchensis</i>, or <i>Vaccinium ovalifolium</i>. The herbaceous layer is usually sparse to moderately dense with moisture-loving forbs and ferns such as <i>Athyrium filix-femina, Blechnum spicant, Lysichiton americanus, Maianthemum dilatatum, Rubus pedatus, Streptopus lanceolatus var. curvipes</i>, and <i>Tiarella trifoliata var. unifoliata</i>. Forests within this alliance occur in the outer coastal regions from Oregon to southeastern Alaska. Most stands are below 500 m elevation. The climate is strongly maritime, wet and relatively mild. Sites are typically within riparian zones and include braided stream channels, alluvial fans and footslopes. Abundant moisture is present, and substrates are typically deep, well- to moderately well-drained soils derived from alluvium with a thin organic duff layer. Stream-deposited cobbles and boulders are often present.  Accession Code: urn:lsid:vegbank.org:commConcept:38961-{AE9CC833-39B8-42B6-A425-99378CACD91D} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Sep-2014 to: ongoing
	status: accepted Community's Parent: Picea sitchensis - Populus balsamifera ssp. trichocarpa Alaskan Riparian Woodland Group This Community's Level: Alliance This Community's Children: Show/Hide   Picea sitchensis - Alnus rubra / Rubus spectabilis - Oplopanax horridus / Lysichiton americanus Riparian Forest   Picea sitchensis / Oplopanax horridus - Alnus viridis ssp. sinuata Riparian Woodland   Picea sitchensis - Tsuga heterophylla / Oplopanax horridus / Athyrium filix-femina Riparian Forest   Picea sitchensis - Tsuga heterophylla / Rubus spectabilis - Oplopanax horridus / Rubus pedatus Riparian Forest		Names:   UID: ELEMENT_GLOBAL.2.899799 NatureServe Explorer   Code: A3747   Translated: Sitka Spruce Riparian Forest Alliance   Common: Sitka Spruce Riparian Forest   Scientific: Picea sitchensis Riparian Forest Alliance