Forest Cycles

Eastside Time Machine

Human choices create new patterns in the forest's natural cycle of change over time.

As conditions in the forest change, existing plant and animal species give way and new ones establish themselves. This pattern of changing conditions and species over time is called succession.

This is one example of succession in the mixed conifer forest of northeastern Oregon. Our history of putting out wildfires has altered the natural succession of our forests.

Instructions: Turn the wheel to see one example of forest succession: a cycle of change over time. Why does putting out wildfires change the forest?

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