Succession is defined as a progress in the change of ecosystems. As time passes, biodiversity increases and the climax community is ultimately formed.
Primary Succession
- Begins with no life
- No soil present, only bare rock
- New area
- Lichen and moss are pioneer species
- Biomass, the number of organisms, is low
- EXAMPLE: Volcanic eruption
Secondary Succession
- Follows the removal of life existing in the area
- Deep soil is present
- Old area
- Seeds and roots already present
- Biomass is higher
- EXAMPLE: Forest fire
Biology EOC Review 