An index of diversity describes the relationship between the number of species in a community and the number of individuals in each species
An index of diversity is a single number that measures biodiversity. It accounts for both how many species exist and how many individuals belong to each species.
Real World
Two coral reefs may each contain 50 fish species, but the reef where individuals are spread evenly across all 50 species scores a higher diversity index than one dominated by a single damselfish species.
Exam Focus
Clearly distinguish species richness (number of species) from index of diversity (richness and evenness combined).
Evaluation Scaffold
A four-step framework for high-quality evaluation. Use this for 'assess', 'evaluate', and 'to what extent' questions.
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