Grand Fir - Sitka Spruce - Western Red-cedar Forest

Type:Alliance
Parent classification:North-Central Pacific Western Hemlock - Sitka Spruce Rainforest
Scientific Name:Abies grandis - Picea sitchensis - Thuja plicata Forest Alliance
Location:United States (Washington, Oregon); Canada (British Columbia)
Description:This alliance consists of generally low-elevation forests of the Pacific Northwest located on dry well-drained sites dominated by Abies grandis and usually codominated by Picea sitchensis, Tsuga heterophylla, and/or Thuja plicata. Understory species are variable and tolerant of drought. Sites are dry and well-drained.
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Child types

Name
Abies grandis - Picea sitchensis / Gaultheria shallon / Polystichum munitum Forest
Thuja plicata - (Abies grandis) / Polystichum munitum Forest
Thuja plicata - Acer macrophyllum - Abies grandis / (Oemleria cerasiformis) / Polystichum munitum Forest
Thuja plicata - Pseudotsuga menziesii - Abies grandis / Mahonia nervosa / Polystichum munitum Forest
Thuja plicata - Tsuga heterophylla / Whipplea modesta Forest

Habitat Vegetation Classification provided by NatureServe Explorer