Succession (Topic 5, Unit 4, A2, Edexcel, Biology)
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- Created by: Hannah
- Created on: 03-01-13 13:03
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Succession:
Primary succession - occurs on bare ground where there has never existed a community before.
Secondary succession - occurs on bare ground where there has existed a community before (ground and existing community has been cleared and succession begins again).
Deflected succession - human activity prevents succession from occuring and a stable climax community is maintained.
The Process of Succession:
- On bare ground the conditions are very harsh and most species are unable to adapt to these extreme conditions.
- Pioneer Species (xerophytes), however, have adaptations that enable their survival within these extreme conditions of the habitat and so pioneer species are the first organisms to colonise the species.
- Following the pioneer species' death…
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