Q.3. Write a short note on Ecological Succession.
Ans. Introduction: Ecological succession is the gradual process by which ecosystems change and develop over time. Nothing remains the same and habitats are constantly changing. There are two main types of succession, primary and secondary.
(a) Primary Succession: Primary Succession occurs on a new piece of land. such as sand or rocks.
(i) Sequence: Primary succession happens before as a new layer of soil has to be formed for growth.
(ii) Dominance: No species are dominant as the first set of species decompose in order to build a layer of soil
(iii) Example: A forest when it grows on a barren piece of land.
(b) Secondary succession: Secondary succession occurs on existing layer of soil.
(i) Sequence: Secondary succession happens after primary succession.
(ii) Dominance: Dominant species create their own ecosystems
(iii) Example: A forest ecosystem turning into an aquatic ecosystem due to deforestation.
Comments
Post a Comment