Ecological Succession - Download as PowerPoint by AEu192


									Ecological Succession
Succession occurs following a
disturbance in an ecosystem.
 Succession replaces or creates a
  community after a disturbance
• a sequence of biotic changes
• damaged communities are regenerated
• new communities arise in previously
  uninhabited areas
        2 types of succession:
        Primary and Secondary

• Primary succession — started by pioneer
  species, such as lichens and mosses
• occurs in previously uninhabited area
• example: when bare rock is exposed by
  receding glacier
• Secondary succession is started by
  remaining species
• occurs after fires or natural disasters
     Types of disturbances
Primary            Secondary
Volcano            Fire
Landslide          Hurricane
Dune formation     Logging
Receding glacier   Abandoned farmland

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