2. Read the introduction at the top of the page,
then answer #1 under “Important Stuff”
Ecological Succession changes that
take place in a community over time.
3. Primary Succession
1. Creates new colonies of organisms
in new areas where no soil exists
(EX: islands formed by
volcanoes)
2. Takes a long time (soil must first
be made by the breaking down of
rocks)
4. Primary Succession
3. The community continues to grow
until limiting factors become too
great.
4. Eventually it become a climax
community (Climax community -
stable, mature; not much change
occurring)
6. #2 & #3 “Important Stuff”
Pioneer species – 1st organisms to move
into an area (examples: mosses & lichen)
Pioneer species help create soil by
secreting acids that help to break down
rocks.
8. Secondary Succession
1. Changes that occur to a community
after a natural disaster has destroyed
it
2. "Old" species die and new species
may move in
3. This one doesn’t take as long as
primary because the soil is already
established.
