Transcript Succession on Krakatoa

Read about
“Succession
on Krakatoa”
Succession occurs in stages with
different species of plants and
Stage
animals at each stage because
4
the conditions of that
Stage 3
stage are suitable for
these organisms
Stage 2
but not others
Stage 1
Primary Succession
Secondary Succession
Succession is the orderly natural changes and
species replacement that takes place in the
communities of an ecosystem.
takes place on land
where there are no
living organisms
Climax
Community
Stable
mature
community.
As soil builds, seeds
carried by wind or
water allow bushes
and grass to grow.
New soil makes it possible for
weeds and insects to move
into the community.
Pioneer Species such as lichens break
down barren rock into useable soil.
is the sequence
of changes
that take
place after
an existing
community is
severely damaged in some way
Volcano erupting in the ocean creating a new island. Primary,
Secondary or Both?
Fires near Possum Kingdom lake. Primary, Secondary or Both?
Volcano erupting on land. Primary, Secondary or Both?
Path behind a glacier. Primary, Secondary or Both?
Answer the following Questions?
If you hiked through a patch of land that
contained a pine forest into an area that
contained only ferns, shrubs, and grasses,
would you be moving from an younger to
an older community or an older to a
younger community?
OLDER
YOUNGER
Answer the following Questions?
Which community would support the
greatest number and diversity of
organisms the pioneer community, one of
the intermediate communities or the
climax community? Be ready to explain
your answer.
The climax community is
very stable due to
the number and
diversity of the
organisms that
live there.