# What does symbols alpha,beta,gamma,delta denotes in diversity?

Alpha diversity denotes the diversity which is present in a particular area or ecosystem which is denoted by the number of species also known as the species richness of the ecosystem.
Beta diversity represents the total number of uniques species present in each ecosystem when it is compared.So it is value which helps us to compare the diversity between the ecosystem.
Gamma diversity represents the overall diversity of the ecosystem within an area or region. It is the total of the number of species present in all the considered ecosystems.
Delta diversity or geographic differentiation is the change between geographic areas which is along the climatic gradient. The delta diversity is a differentiation diversity, since it measure the rate of change.

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