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Picea sitchensis / Alnus viridis ssp. sinuata Woodland | Western Ecology Working Group of...
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Name: Picea sitchensis / Alnus viridis ssp. sinuata Woodland Reference: Western Ecology Working Group of... Description: From Boggs (2000): This is a minor, yet widespread type on the Copper River Delta and elsewhere in Alaska. It occurs on outwash deposits (except that of the Copper River), stabilized dunes of beaches and spits, levees of the uplifted marsh, and as an incidental type on portions of uplifted mudflats that are above high tide. On outwash plains, it occurs on recently disturbed lands including new alluvial deposits, ice-scoured islands, and abandoned river channels. The sites are well-drained, although during high riverflows, they are nearly always inundated. The surface topography differs from level to pitted with hummocks. Site shape is usually a stringer or small patch. The soils are characterized by a litter layer less than 10 cm (4 inches) thick over silt or sand. Organic-humic layers up to 20 cm (8 inches) thick (pH of 4.5 to 5.5) were found in the wetter stands. The pH of the mineral layer ranges from 5.5 to 7.0. Horizon development occurs in most of the soil profiles. Gleying was not found, but mottling was noted in most profiles, although absent on all dune sites. Salinity was low in all stands. Stands are composed of dense, sapling-pole size <i>Picea sitchensis</i>. Tree height ranges from 1.8 to 15.3 m (6-50 feet), and their age ranges from 20 to 100 years. The stands are typically a single cohort. <i>Alnus viridis ssp. sinuata (= Alnus crispa)</i> occurs as a major component in all stands; shrub height ranges from 3 to 6 m (10-20 feet). Bryophyte, forb, graminoid, fern, and other shrub species have highly variable cover values. This is an early-successional type. On outwash plains, it is a primary colonizer of new alluvial deposits, on dunes it invades the early-successional herbaceous types, and on the uplifted marsh it invades the newly uplifted levees. On all landscapes, this community is seral to other <i>Picea sitchensis</i> types and, eventually, <i>Tsuga heterophylla</i> community types.  Accession Code: VB.CC.33089.CEGL003254 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.687432 NatureServe Explorer   Translated: Sitka Spruce / Sitka Alder Woodland   Scientific: Picea sitchensis / Alnus viridis ssp. sinuata Woodland   Code: CEGL003254