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Ecological Succession. Primary and Secondary. What is it?. The normal GRADUAL (takes a long time) changes that occur in the types of species that live in an area. Ecological Succession.

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ecological succession

Ecological Succession

Primary and Secondary

what is it
What is it?

The normal GRADUAL

(takes a long time)

changes that occur in the types of species that live in an area.

ecological succession3
Ecological Succession
  • There are two main types of succession, primary and secondary.Primary succession is the series of changes that take place when there is no soil present. For example, after a volcano or destroyed coral reef. Secondary succession is the series of changes that take place when there is soil present. For example, after a fire, hurricane, flood, destruction by man, or tornado.
which one do you think takes longer
Which one do you think takes longer?

Answer

Primary Succession

Why?

The rocks need to break down to make the soil before new species will grow

what species comes first
What Species Comes first?

Pioneer Species

These are the FIRST species to grow

They can be different depending upon the area. Example: is it a forest, a pond, a wetlands….?

AND- is it primary or secondary succession?

what makes the difference between primary and secondary succession
What makes the difference between primary and secondary succession?

The key is whether there is soil already present or does the soil need to be made from broken down rock

pioneer species first
Pioneer Species- FIRST

Lichens-do not need soil to survive

They can survive drought, extreme heat and cold, and other harsh conditions and start the soil building process.

pioneer species first10
Pioneer Species- FIRST

Algae- many types

second stage
Second Stage

Second plants to become established after the disturbance (taller grasses, small shrubs).

Shrubs

third stage bushes
Third Stage- bushes
  • Third species to become established
final stage climax community
Final Stage-Climax Community
  • Last species to appear; some say it isn’t really finished growing.
pond succession primary or secondary
Pond Succession- Primary or secondary?
  • Put the pictures in order

B, C, A, then D.

full succession takes a very long time could be 100 s of years
Full succession takes a VERY long time- could be 100’s of years.
  • Still second stage/some small trees appearing
succession in action
Succession in Action
  • RestoringEarth - Educating People
when will the animal species return to the ecosystem
When will the animal species return to the ecosystem?
  • You must consider what is needed for them to be able to live in the environment.
  • Animal species will not return until their needs can be met.
  • What do they need? A habitat that will provide them with sufficient food, water, a hiding place, etc.
choose your favorite disaster how will succession occur
Choose your favorite disaster – how will succession occur?
  • A disturbance:
  • a forest fire
  • a volcano
  • a flood,
  • dried up pond
  • hurricane
  • tornado
  • abandoned ball field or tennis court
  • coral dying for lack of water
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