Answer:
Ecological succession are mainly of two types: Primary succession and secondary succession.Both the succession leads to establishment of a stable community on a barren land . Primary succession begins from a primitive substratum where no community existed before. Here the first organisms are called pioneers. Secondary succession takes place in an area where a community exited before but disappeared due to some cause.
Step-by-step explanation:
- Ecological succession is a natural process by which some locality becomes successively colonized by different group or communities.
- Succession can be caused by initial causes like climatic as well as biotic factor and continuing causes like migration , aggression competition etc.
- Based on the nudity of the land succession can be primary or secondary.
- Secondary succession can again be autogenic or allogenic.