B4.2.1—Ecological niche
An ecological niche is a species role in a community, including habitat, feeding, activity, reproduction, interactions and tolerance ranges across ecosystems.
- Syllabus
- First assessment 2025
- Objective
- B4.2.1
- Level
- HL
Concept essentials
- A niche is the ecological role or mode of existence of a species.
- Niche includes habitat, feeding, activity, reproduction and interactions.
- Species in similar habitats can have different niches.
- Abiotic tolerance ranges contribute to a species niche.
ConceptIB Biology HL