APES Part Review (ECOSYSTEM CHANGE)
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5 Terms
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What is ecological succession?
Change in ecosystem over time
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Describe ‘Primary succession’
establishment of an ecosystem on bare ground (no previous ecosystem existed)
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What is a pioneer community?
first organisms to inhabit an area (Ex. – lichens on bare rock to create soil)
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Describe ‘secondary succession’
begin in an area where natural community was disturbed but topsoil remains (ex. – forest fire) (“second” ecosystem to exist)
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Describe ‘Climax Community’
final stable ecosystem, only minor changes occur.
Note 
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