Sub-boreal Spruce Biogeoclimatic zone (SBS)



Ecoregions: Central and Sub-boreal Interior
Elevations: 1100-1300m
Latitudes: 510 degrees 30' - 59 degrees
 
Description:

  • Occurs on gently rolling plateaus in the Central and Boreal Interior
  • Grades at lower elevations into IDF and ICH in the south and into BWBS in the north. Grades at higher elevations into ESSF
  • Hybrid and White spruce and sub-alpine fir are the climatic climax, interspersed with abundant wetlands and large expanses of seral lodgepole pine resulting from past wildfire
  • Important moose habitat
Representative Species:
Drier phase
 

Trees

  Picea engelmannii x glauca (hybrid spruce)
  Picea glauca (white spruce)
  Abies lasiocarpa (sub-alpine fir)
  Pseudotsuga menziesii (Douglas fir)
  Pinus contorta (Lodgepole pine)
 

Shrubs

  Sheperdia canadensis (soopolallie)
  Arctostaphlos uva-ursi (kinnikinnik)
  Vaccinium myrtilloides (velvet-leafed blueberry)
 

Herbs

  Calamagrostis rubescens (pinegrass)
  Oryzopsis asperifolia (rough-leafed rice grass)
 
Wetter Phase
 

Trees

  Picea engelmannii x glauca (hybrid spruce)
  Picea glauca (white spruce)
  Abies lasiocarpa (sub-alpine fir)
  Betula papyrifera (paper birch)
 

Shrubs

  Rubus pedatus (five-leafed bramble)
  Vaccinium mebranaceum (black huckleberry)
  Viburnum edule (highbush cranberry)
  Alnus crispa var sinuata (sitka alder)
 

Herbs

  Petasites frigidus var. palmatus (coltsfoot)
  Streptopus amplexifolius (clasping-leafed twisted stalk)
  Gymnocarpium dryopteris (oak fern)
 
Potential Restoration Species:
Drier phase
 

Trees

  Picea engelmannii x glauca (hybrid spruce)
  Picea glauca (white spruce)
  Abies lasiocarpa (sub-alpine fir)
  Pseudotsuga menziesii (Douglas fir)
  Pinus contorta (Lodgepole pine)
 

Shrubs

  Sheperdia canadensis (soopolallie)
  Arctostaphlos uva-ursi (kinnikinnik)
  Vaccinium myrtilloides (velvet-leafed blueberry)
 

Herbs

  Calamagrostis rubescens (pinegrass)
  Oryzopsis asperifolia (rough-leafed rice grass)
  Aralia nudicaulis (aralia)
 
Wetter Phase
 

Trees

  Picea engelmannii x glauca (hybrid spruce)
  Picea glauca (white spruce)
  Abies lasiocarpa (sub-alpine fir)
  Betula papyrifera (paper birch)
 

Shrubs

  Rubus pedatus (five-leafed bramble)
  Vaccinium mebranaceum (black huckleberry)
  Viburnum edule (highbush cranberry)
  Alnus crispa var sinuata (sitka alder)
 

Herbs

  Athyrium filix-femina (lady fern)
  Cornus canadensis (bunchberry)
  Petasites frigidus var. palmatus (coltsfoot)
 
Meidinger, D. and Pojar, J. 1991. Ecosystems of British Columbia. British Columbia Ministry of Forests. 330 pp. http://www.for.gov.bc.ca/hfd/pubs/Docs/Srs/SRseries.htm