Succession

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Succession

• Succession A orderly process of change in
  living communities over time.

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• Primary Succession Succession happens slowly in
  areas with no previous growth
• Begins with bedrock or other soil-less strata.
  May take thousands and thousands of years

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Pioneer communities
The first organisms to establish themselves on
rock and other barren strata. Examples would
be Lichens and mosses.
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• Secondary Succession Succession happens more
  quickly in areas with previous growth
• When soil is already present, farming, fires,
  tornadoes, floods, erosion can push a community
  back to an earlier seral stage.

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Seral stages
Intermediate stages toward a climax
community. Plants and animals change the abiotic
factors to drive succession along different
pathways.
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Examples

• Ants revegetate the outback.
• Bugs reclaim stripmines
• Birds and succession
• Manure, and dung beetles
• Shade changing the abiotic factors

• Ants around a prairie anthill
• Prairie dogs
• Animals that plow our soil
• Grazing
• Seed dispersal
• Dead dodo, dead tree

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This used to be a lake
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Succession

• Climax Community relatively stable community
  that results from a long period of plant and
  animal succession.
• No human interference

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What two major biomes are found in Missouri?
deciduous forest grassland
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How do you know if a community is a seral stage
or a climax?
Ecolgogist can detect changes in plant and
animal species over time.
Ecologist can identify indicator species