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Coast Forest Region Version 6 Provincial Biogeoclimatic Zones


Variant: CWHwh1 Coastal Western Hemlock, Submontane Wet Hypermaritime
Description:

DISTRIBUTION: The CWHwh1 is restricted to the Queen Charlotte Islands where it occurs at lower elevations on the leeward side of the Queen Charlotte Ranges. The elevational limits range from sea level to approximately 350 m (250 m approaching the CWHvh2 to the west).

CLIMATE: The CWHwh1 has mild, wet winters with little snowfall, and cool moist summers. Occasional warm dry periods during the summer reflect the rainshadow effect of the Queen Charlotte Ranges. The overall temperature regime is mild due to the moderating effect of the Pacific Ocean. Cloud and fog are frequent throughout the year.

VEGETATION: Forests on zonal sites are dominated by Hw, Cw, and Ss. Mosses dominate the understorey with Hylocomium splendens, Rhytidiadelphus loreus, and Rhizomnium glabrescens occurring most commonly. The herb and shrub layers are sparse, probably due to heavy deer browsing. Very old successional stages are increasingly dominated by Cw. Subdued terrain on the Queen Charlotte Lowlands and eastern Skidegate Plateau have extensive bogs and nutrientvery poor to -poor, Cw, Hw, salal-dominated stands.


Area (Ha): 766340.14  
TEM Area (Ha): 64995.17  
% of Prov BEC w/ TEM: 8.48  
  For lists of red and blue listed communities and species in this subzone, please search within the Ministry of Environment's BC Species and Ecosystems Explorer
Further Links:
  1. Download Special Report Series 6 [Chapter 6] in PDF Format
  2. The Ecology of the Coastal Western Hemlock Zone - Brochure 31
  3. A Field Guide to Site Identification and Interpretation for the Vancouver Forest Region
  4. TEM Website