succession (primary)
- Created by: vezting
- Created on: 23-04-16 17:14
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- succession
- key words
- succession is directional change in a community of organisms over time
- a development of a community from bare ground is primary succession
- the first organisms to live in the bare area are known as the pioneer community
- final plants and organisms succeed the smaller ones until a final stable community is reached. this is climax community
- sand dunes
- they display all stages of succession. pioneer closest to the sea and climax burther back
- 1:pioneer plants like sea rocket colonise the sand above the high water mark, they tolerate spray and salt.
- 2:wind blown sand builds up at the base of this plant forming 'mini-dune' and when the plants die there is nutrients
- 3: sea couch has underground stems which stabilise the sand
- 4: plants keep dying and nutrients keep building up the plants and the dunes get bigger and therfore more stable
- key words
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