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Coast Forest Region Version 6 Provincial Biogeoclimatic Zones


Variant: CWHxm2 Coastal Western Hemlock, Western Very Dry Maritime
Description:

DISTRIBUTION: The CWHxm occurs at lower elevations along the east side of Vancouver Island (above the CDF where present) as far north as Kelsey Bay, and on the islands around southern Johnstone Strait. It also occurs inland on Vancouver Island along major valleys from Nimpkish Valley in the north to Cowichan Valley in the south. On the mainland it extends up the south side of the Fraser River as far as Chilliwack, and along the Sunshine Coast as far as Desolation Sound. Elevational limits range from sea level (or above the CDFmm where present) to approximately 700 m. Near the wetter parts of its distribution, the upper limit is lower (e.g., 150 m on Gambier and Bowen islands, and in the Fraser Valley).

CLIMATE: The CWHxm has warm, dry summers and moist, mild winters with relatively little snowfall. Growing seasons are long, and feature water deficits on zonal sites.

VEGETATION: Forests on zonal sites are dominated by Fd, accompanied by Hw and minor amounts of Cw. Major understorey species include salal, dull Oregon-grape, red huckleberry, Hylocomium splendens, and Kindbergia oregana. Less common species include vanilla-leaf, sword fern, twinflower, and bracken.


Area (Ha): 583047.04  
TEM Area (Ha): 3178.52  
% of Prov BEC w/ TEM: 0.55  
  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