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Question
Explain the progress of ecological succession in newly formed volcanic island.
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Solution
- Primary succession starts at places where no living organisms were present before like a newly formed volcanic island.
- Before a biotic community of diverse organisms can be established, there must be soil. Depending mostly on climate, it takes natural processes, several hundred to several thousand years to produce fertile soil on bare rock.
- The species which invade a bare area and initiate the succession are called pioneer species. Crustose lichen grows on the rocks which secretes acid to dissolve rock. This helps in weathering of rocks and formation of soil.
- These conditions become favourable for the next community i.e. bryophytes and mosses take hold of the small amount of soil.
RELATED QUESTIONS
Answer the following question.
List the factors upon which the type of invading pioneer species depends on secondary hydrarch succession. Why is the rate of this succession faster than that of primary succession?
The growth of lichens on the rocks followed by mosses, herbs, shrubs and trees is an example of ______.
Where is xerarch succession commonly observed?
What may happen during ecological succession due to natural or human-induced disturbances?
Which of the following statements is correct for secondary succession?
Primary succession occurs on
Climax stage is achieved quickly in secondary succession as compared to primary succession. Why?
Succession in a 6-meter deep point exhibits a sequence of ______.
Primary successions the development of communities on ______.
Pioneers are ______.
