Download Succession PowerPoint

How Ecosystems Change
Naturally
What changes will you see?
Succession
• The normal,
gradual changes
that occur in the
types of species
that live in an
area.
Primary Succession
• How will these areas (volcanic rock and
glacial rock deposit) change?
• What will plants need to survive here?
Primary Succession
• Succession that begins in a place that
previously had no soil or plants.
Pioneer Species
• First plants to inhabit an area.
• They often begin the soil building process
by breaking down the rocks along with
weathering and erosion.
Lichen
• A common pioneer species, it produces
acid that helps weather the rock into soil.
• When it dies, it will also help fertilize the
newly forming soil.
As soil forms, seeds are blown in or
dropped by birds or other animals
Secondary Succession
• Succession that occurs where soil is
already present.
Secondary succession occurs much
faster than primary succession-Why?
Climax Community
• A community of plants that is relatively
stable and undisturbed and has reached
an end stage of succession. (ex-a forest)
Review
What type of succession will occur
here?
• Surtsey, an island off the coast of Iceland.
It was created in 1963 by a volcanic
eruption.
Primary Succession
What will the first species to move
in be called?
• Pioneer Species
What is a common pioneer
species?
• Lichen
(Like-ehn)
What type of succession will occur
here?
• Secondary
succession
What is the final stage of
succession called?
• Climax Community