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Background
You are the local forest ecologist who maintains a unit of Douglas-fir/Ponderosa
Pine forest at North Cascades National Park. Your duty is to keep
old John McMillian's cabin from burning down, while at the same
time keeping the forest community healthy* and intact.
Procedure
Create the landscape of your choice by clicking the words below
the landscape feature, then click "Set Landscape." A
lightning button will appear. Click it to test your landscape
under fire conditions. When your landscape has an Eco-factor of
8 or greater and your Fire Potential is 2 or less, the eagle will
appear and take you to your next destination. Try again, if the
eagle does not come to take you away. For help, study the definitions
below.
Definitions
- Eco-factor (Range, 0-10): If the landscape has an adequate
amount of light hitting the land and a diversity of tree types,
a high Eco-factor will be assigned.
- Fire Potential (Range, 0-10): How well is John's cabin
protected from fire? If few threats are nearby, a low number
will be assigned.
- Meadow: Unique plants and wildflowers live in native
meadows. Wildfires burn less hot on meadows and are more easily
contained.
- Over-story: Older trees with high canopies provide
shade for wildlife and shade-tolerant plants. Although, too
much shade can rob light from the seedlings below and halt the
ability for light-loving tees to reproduce. Over-story trees
also help to re-seed the landscape with new generations of seedlings.
- PIPO (Pinus
ponderosa): Ponderosa pine is a light-loving species
and also known to be dependent on fire. Fire clears out the
understory saplings and pole trees allowing more light and water
to be available for the trees that survive. They are highly
drought-tolerant.
- Pole: Young trees draw valuable moisture from the ground,
shade out the forest floor and are vulnerable by fire.
- PSME (Pseudotsuga
menziesii): Douglas-firs are cone-bearing trees with
thick, fire-resistant bark. Their seedlings depend on high quantities
of light and a fair amount of water to mature. In open areas
where the lower branches are close to the ground, fire has the
potential to reach the crown (top of the tree) by running up
the lower branches.
- Snag: Snags
are standing, dead trees. Wildlife depends on snags for shelter.
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