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14.5 Ecological Succession
KEY CONCEPT
Ecological succession is a process of change in the
species that make up a community.
14.5 Ecological Succession
• 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
14.5 Ecological Succession
• There are two types of succession.
– primary succession — started by pioneer species like
lichens and some mosses
14.5 Ecological Succession
14.5 Ecological Succession
• There are two types of succession.
– secondary succession — started by remaining species
left over. From for example a fire or hurricane.
14.5 Ecological Succession
14.5 Ecological Succession
Video Slide show of succession
• Mt. St. Helens
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