IB ESS HL 2.5.7 Succession Changes Over Time Question Bank
Trace changes in diversity, biomass, productivity and stability during succession.
- Syllabus
- First assessment 2026
- Course
- ESS HL
- Level
- HL
Exam points
- identify the successional stage or disturbance response
- trace community and abiotic changes through time
- justify the interpretation using ecological evidence
2.5.7—Succession changes over time question 1
Table:Organisms found in each successional stage
Figure:Keen's mouse in three successional stages
An area of temperate coniferous forest was deforested and allowed to regenerate. A survey of species numbers was conducted in three successional stages. The results of the survey are summarized in Table: Organisms found in each successional stage.
Explain why the diversity changes in the different successional stages.
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