1. Ch. 21.3 Community Ecology pp.406-408
Succession= the gradual, sequential regrowth of a community over time after some disturbance
Primary succession= establishment of a community in a barren area
Primary = first
Bare rock, sand dune, lava flow (“starting from scratch”)
No soil present
Pioneer species = fast- growing, first to move in
Grasses, lichens; often wind- blown
Ch Community Ecology pp

2. Ch. 21.3 Community Ecology pp.406-408
Secondary succession= reestablishment of species in an ecosystem
After some disturbance
There is an existing seed bank and soil, so quicker than 1’
Ch Community Ecology pp
1’ = primary
2’ = secondary

3. Ch. 21.3 Community Ecology pp.406-408
In succession, the community advances through predictable stages of maturity that results in a change in the species of the community - soil thickness ↑ -species richness↑ -biomass ↑ - species change - predictable pattern
Ch Community Ecology pp

4. Ch. 21.3 Community Ecology pp.406-408