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Description: |
DISTRIBUTION:
The IDFww has limited distribution in the
Vancouver Forest Region. It occurs at low
elevations in major drainages near the eastern
limits of the Region. It is more commonly
distributed along southwest-facing slopes.
In the southern portion it is present discontinuously
from the Lillooet River to the Skagit River.
In the northern part of the region it occurs
in the Klinaklini and Atnarko river valleys.
The elevational limits range from approximately
100 to 1200 m.
CLIMATE: The IDFww has a continental
climate that is transitional to a maritime
climate because of its proximity to the
Pacific Ocean. Summers are warm and dry,
while winters are cool and relatively moist,
with moderate snowfall. Growing season water
deficits are very pronounced. This subzone
represents the wettest and mildest part
of the IDF zone, which is more extensive
in the interior of the province.
VEGETATION: Forests on zonal sites are
dominated by Fd, with minor amounts of low
vigour Hw and Cw. The understorey is characterized
by a well-developed shrub layer featuring
a diverse mixture of species, including
falsebox, saskatoon, tall and dull Oregon-grape,
prince's pine, birch-leaved spirea, baldhip
rose, beaked hazelnut, and western trumpet
honeysuckle. The moss layer is dominated
by Hylocomium splendens and Rhytidiadelphus
triquetrus. Py occurs on drier, lower-elevation
sites at Anderson Lake and in the Fraser
Valley
north of Boston Bar.
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