Download Succession

Succession
• Disturbances change the makeup of a
community.
• Some species develop immediately; over
time they get replaced by other species.
• The slow, consecutive regrowth of a
species in an area is called succession.
Ch. 3.1
Communities
Changes in the Community
No life in the BLAST zone: no
community, no soil.
Primary Succession
• Development of a
community that has
not supported life
before.
• Rocks, sand dunes,
volcanic islands
• Formation of soil
Pioneer species – first species to “move in”
to an area that hasn’t supported life before
Secondary Succession
• Secondary succession is the rebuilding of
an ecosystem after a disturbance that
damages or takes out all or part of the
existing community, BUT leaves the soil.
• Floods, tornados, fires
• Secondary succession, as with primary
succession, tends to result in the transition of a
community from the original pioneer species to
climax community.
• Climax Community: is a stable group of plants
and animals that is the end result of succession.
• The rate of secondary succession is much faster
than primary succession.
Succession in Water
Look familiar??
Which line represents primary succession? Secondary?