Succession Story
Published on Apr 17, 2016
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PRESENTATION OUTLINE
SUCCESSION STORY
LAUREN IRWIN〰PERIOD 5
PRIMARY SUCCESSION- THE SERIES OF CHANGES THAT OCCUR IN AN AREA WHERE NO SOIL OR ORGANISMS EXIST.
Photo by bill barber
Step One to Primary Succession
After a event that leaves no plant life, there is no soil. Just ash and rock.
Step Two
Pioneer species start to take place, plants such as mosses and lichens.
Step Three
Pioneer species start to die off, and soil forms. New plants start to grow.
Step Four
More plants die and decompose making the soil more fertile. New plants start growing and existing plants mature in the fertile soil.
Secondary Succession- the series of changes that occurs in an area where the ecosystem has been disturbed, but where the soil and organisms still exist.
DISTURBANCE IN NATURE
FIRES CAN DESTROY MOST SMALL PLANTS BUT STILL LEAVE SOIL FOR PLANTS TO GROW.
STEP ONE
FIRE OR WATER DESTROY LEAVES SOIL BUT BURNS/PULLS AWAY PLANTS.
