Ecological Succession
Ch. 5 part 3
Big Idea #4
Succession is the process of change in
the structure of the environment and the
composition of species in an ...
Where do forests come from?
They come about gradually through a
process called ecological succession
2 types
Type 1: primary succession
Brand new land
Primary succession
No soil
First species to
come are called
pioneers
 Mosses and lichen
 Can grow on bare
rock
 As th...
Primary succession
After a loooong time, there will be
enough soil to support small plants like
weeds, grasses, and small...
Primary succession
Finally enough soil accumulates to
support trees
And you get a climax community
2 types
Type 2: secondary succession
Old land that has been wiped out
somehow
Examples:
Abandoned
farmland
Burned for...
Secondary Succession
The same thing
happens, but
much more
quickly since
there is already
a soil base
Succession
Animal species change through the
course of succession as well
APES Ch. 5, part 3
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APES Ch. 5, part 3

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APES Ch. 5, part 3

  1. 1. Ecological Succession Ch. 5 part 3
  2. 2. Big Idea #4 Succession is the process of change in the structure of the environment and the composition of species in an ecosystem as the environment changes
  3. 3. Where do forests come from? They come about gradually through a process called ecological succession
  4. 4. 2 types Type 1: primary succession Brand new land
  5. 5. Primary succession No soil First species to come are called pioneers  Mosses and lichen  Can grow on bare rock  As they grow they break apart the rock and form soil
  6. 6. Primary succession After a loooong time, there will be enough soil to support small plants like weeds, grasses, and small shrubs  Mosses and lichens die off
  7. 7. Primary succession Finally enough soil accumulates to support trees And you get a climax community
  8. 8. 2 types Type 2: secondary succession Old land that has been wiped out somehow Examples: Abandoned farmland Burned forests Polluted streams Flooded land
  9. 9. Secondary Succession The same thing happens, but much more quickly since there is already a soil base
  10. 10. Succession Animal species change through the course of succession as well

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