A Simpsons biodiversity calculation is almost certain to be on the exam paper. It combines maths with ecology and gives an opportunity for the examiner to ask suggest questions....
Remember biodiversity is not the number of species ! It is a measure of species richness and species evenness.
Make an effort to revise sampling techniques from your required practicals - and focus on what you are trying to achieve with a sampling strategy, and how that strategy will enable a valid comparison of different ecosystems or an accurate representation of the area as a whole.
Here are a few questions and markschemes
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