This diagram shows the stages of ecological succession after a natural disturbance. The first step is the growth of lichens and grasses which are pioneer species. After that the small shrubs start to grow. The next step is the slow growth of small trees. These trees grow and become a climax forest. This is the last stage in the development of vegetation in an area over time. Through the process of ecological succession, the ecosystem will have reached a steady state, called climax community.
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