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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