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Alpha diversity is a measure of the species diversity within a sample. Partek Flow can calculate two of the most commonly used alpha diversity metrics: Shannon index (1) & Simpson index (2). The Shannon index takes into account the number of different species (richness) and how evenly the counts are distributed among species (evenness). The more species you observe and more even their abundances are, the higher value of the Shannon index value, the higher the species diversity. in other words, the more diverse of the sample.  The Simpson index gives more weight to common or dominant more abundant species, and less weight to rare species. It scales from 0 to 1. The closer to 1, the higher the species diversity.

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