A measure of the diversity of an ecosystem/habitat, taking into account the number of different species (species richness) and the population size of each species (species abundance)
Index of diversity
D = N(N-1)/Σn(n-1)
Methods of conservation
Protected habitats
Habitat management/creation
Farming quotas
Captive breeding
Why is it better to measure index of diversity rather than counting the number of species present?
