the shannon index h' for a community that consists of only two species, which both have exactly the same number of individuals is one
A technique to gauge the species diversity in a community is to use the Shannon Diversity Index, also known as the Shannon-Wiener Index.
This index, designated as H, is figured out as follows:
H = -Σpi * ln (pi)
where:
Greek letter, which stands for "sum"
Natural log pi is defined as the percentage of species I that make up the total community. The variety of species in a given community is inversely correlated with H value. The variety decreases with decreasing H values. A community with a H value of 0 has a single species. An indicator of how evenly distributed the species are in a community is the Shannon Equitability Index.
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