2.5 Natural Disruptions to Ecosystems

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7 Terms

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Natural Disturbances

A natural event that disrupts the structure and or function of an ecosystem

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Periodic

occurs with regular frequency (ex: dry-wet seasons)

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Episodic

occasional events with irregular frequency (ex: hurricanes, droughts, fires)

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Random

no regular frequency (volcanoes, earthquakes, and asteroids)

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Natural Climate Change

Earth’s climate has varied over geologic time for numerous reasons

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Environmental disturbances cause

widespread habitat changes and or loss

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Migration

Wildlife may migrate to a new habitat as the result of natural disruptions