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प्रश्न
Explain the progress of ecological succession in newly formed volcanic island.
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उत्तर
- 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.
संबंधित प्रश्न
Define ‘Ecological succession’.
In what state is the climax community?
Identify the INCORRECT statement.
Which are the pioneer species in xerarch and hydrarch succession respectively?
What may happen during ecological succession due to natural or human-induced disturbances?
In xerarch succession which one of the following brings about initial weathering of rocks to form soil?
The growth of lichens followed by mosses, herbs, shrubs and trees is an example of ____________.
The biodiversity increases when one moves from the pioneer to the climax stage. What could be the explanation?
Name various seral stages from pioneer species to climax community with suitable examples in hydrarch succession.
Describe the different communities involved in the process of succession.
