The student is expected to: 11B investigate and analyze how organisms, populations, and communities respond to external factors; 11D describe how events and processes that occur during ecological succession can change populations and species

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The student is expected to11B investigate and
analyze how organisms, populations, and
communities respond to external factors 11D
describe how events and processes that occur
during ecological succession can change
populations and species diversity12F describe
how environmental change can impact ecosystem
stability
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KEY CONCEPT Ecological succession is a process
of change in the species that make up a
community.
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Succession occurs following a disturbance in an
ecosystem.

• Succession regenerates or creates a community
  after a disturbance.
• a sequence of biotic changes
• damaged communities are regenerated
• new communities arise in previously uninhabited
  areas

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• There are two types of succession.

• primary succession started by pioneer species

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• There are two types of succession.

• secondary succession started by remaining
  species