Index of diversity D
Exam question
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Scientists counted cichlid fish of four species in Lake Apoyo. The index of diversity, D = N(N − 1) ÷ Σn(n − 1), of a second lake is 2.8.
| Species | A | B | C | D |
|---|---|---|---|---|
| Number of fish, n | 29 | 16 | 10 | 5 |
(a)
Calculate the index of diversity for Lake Apoyo.
(3)(b)
Compare the biodiversity of Lake Apoyo with that of the second lake.
(1)Total for this question: 4 marks