This key facts covers Quadrats within Decomposition for GCSE Biology. Topic 4: Decomposition It is section 4 of 12 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 4 of 12
Practice
15 questions
Recall
20 flashcards
📌 Quadrats
A quadrat is a square frame (usually 0.5m × 0.5m = 0.25m²) used to sample an area:
- Place quadrats randomly using random number generators for coordinates
- Count organisms in each quadrat (or estimate % cover for plants)
- Calculate mean number per quadrat
- Scale up: Population = mean × (total area ÷ quadrat area)