Succession - AQA Unit 4 Biology

Succession

- a change in the ecosystem over time.

1. Succession begins with the colonisation of a new environment called the pioneeer species.

2. This pioneer species interactes with the environment and changes it which may allow other organisms to join and further change the environment.

For example:

Lichens can grow on bare rock so are a strong pioneer species that outcompetes others that may also enter to begin with. The lichens grow…