Why is vegetation on the eastern slopes of the Cascades different from the west?
The eastern slopes of the Cascades receive significantly
less annual precipitation. Vegetation is modified because
of the reduced rainfall and snowfall. The primary forested
areas are populated by dense lands of Engelmann spruce,
grand fir, silver fir, and Douglas fir conifers. Streambeds
and lower elevated areas are perfect for mixed deciduous
varieties of vine maple, alder, larch, oak, and aspen trees.
Open areas include meadows, steppe grasslands, and
dense bushes and thickets. The animal life is similar to
the western Cascades. Perhaps the biggest difference is
the existence of venomous rattlesnakes.
O The climate is too cold in that area of the region.
Less precipitation falls on the east side of the
mountains than the west.
O That side of the mountains is too snowy for plants
to grow.
O The soil in that area does not support the growth of
trees.
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