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Exploring the SBPS Zone

1) Location

2) Elevation & Climate

3) Precipitation & Temperature

4) Vegetation

5) Soil

6) Fire & Pine Beetle

7) Wildlife

8) Subzones

9) Economic Resources

Sub-Boreal Pine Spruce Zone

By Tyler Farley and Shawana Michalek

Location

. Quesnel

  • Chilcotin region settled in the Fraser Plateau

  • Major subdivision of the Interior Plateau and the southern portion of the Nechako Plateau

  • South and west of the Sub-Boreal Spruce Zone (SBS) within the

Elevation and Topography

SBPS is found on high Plateaus

  • North 850-1300m
  • South/west 1100-1500m

Major Drainage include

  • Chilcotin River
  • West Road (Blackwater)
  • Dean River
  • Entiako River

American White Pelican

(Pelecanus erythrorhynchos)

Precipitation and Temperature

SBPS is found in the rain shadow of the Coastal Mountains (dry)

  • Very hot summers and cold winters

  • Dryer and cooler then SBS (distinct)

  • Mean annual precipitation 335-580mm

  • Mean temperature 0.3-2.7 ⁰ Celsius.

SD of Extreme-Min Temp for 27 years

Soil

Decomposition and structure is slow to develop, Humus form represents Mors.

Most common soil orders include:

  • Brunisolic (Low rate of weathering due to climate)

  • Luvisolic (Clay rich cause drainage restrictions)

  • Only nesting colony of American White Pelican in BC

  • Government created the White Pelican Provincial Park

  • Park closed during breeding season for clutch protection

Wildfire

  • Dry conditions lead to frequent fire events

  • Pine seeds released with the heat

  • Fire exists within a cyclical system

  • Leads to regeneration and new forests

Vegetation

Wildlife

Dominant species is Lodgepole Pine

  • Due to fire, continuous, dense, similar age

Understory of White Spruce

  • Common on wetter sites (north/east)
  • Occasionally found on zonal sites (rare due to fire)

  • Low vegetation diversity limits species richness

  • Lichen abundance creates prime Caribou habitat

  • Hunting for fur is prevalent

Subzones

SBPSxc (Driest)

  • White Spruce is rare
  • Kinnikinnik
  • Pinegrass
  • Lichen

SBPSdc (Moist)

  • White Spruce understory
  • Diversified herb/moss layer

SBPSmc (Moist/Cool)

  • White Spruce has healthy population
  • Mosses (no Pinegrass)

SBPSmk (Warmest)

  • Douglas fir
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