Biodiversity - term used to describe variety in living world. Refers to number & variety of of living organisms in a particular area & has 3 components:
- 1. Species Diversity - number of different species & number of individuals of each species within any 1 community.
- 2. Genetic Diversity - variety of genes possessed by individuals that make up a species.
- 3. Ecosystem Diversity - range of different habitats within a particular area.
Species diversity is a measure of biodiversity and has 2 components: number of different species in a given area & proportion of the community that is made up of an individual species. 2 communities may have same number of species but the proportion is different.
Species diversity (d) = N(N-1)/sum of n(n-1)
where N = total number of orgs of all species & n = total number of orgs of each species.
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