Question
Explain how xerarch succession progresses from serie to mesic condition and forms a stable climax community. You may use a flow chart.
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Answer
Xerarch succession:
- In the primary xerarch succession, lichens are the pioneer species; they secrete acids to dissolve the rock, facilitating weathering and soil formation.
- With formation of soil, small plants like bryophytes occupy the area.
- They are succeeded by bigger plants over a long period of time. After several more seral stages, a stable climax forest community is formed.
- The climax community remains stable as long as the environment remains unchanged.
- The xeric habitat is changed into a mesic habitat.
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