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Table 3 Details of the Jaccard, Sørensen, and Bray-Curtis dissimilarity indices

From: Assessing biological dissimilarities between five forest communities

Dissimilarity

Equation

Details

Jaccard index

\( \frac{B+C}{A+B+C} \)

A represents the number of species shared by two communities, B and C are the number of species unique to each of the two communities

Sørensen index

\( \frac{B+C}{2A+B+C} \)

Bray-Curtis index

\( \frac{\sum_{i=1}^n\mid {p}_i^a-{p}_i^b\mid }{\sum_{i=1}^n\left({p}_i^a+{p}_i^b\right)} \)

n is the number of species; \( {p}_i^a \) and \( {p}_i^b \) are the relative frequencies of species i in plots a and b