Table 4.

Abundance based pairwise dissimilarity measures used in this study, including the Bray-Curtis dissimilarity measure and its notation, formula, and references.

	Pairwise dissimilarity measure	Notation	Formula
Sørensen group	Percentage difference (alias Bray-Curtis dissimilarity)	βBC	$B+C/2A+B+C$
		βBC.BAL	$\min (B,C)/A+\min (B,C)$
		βBC.GRA	$\frac{\left|B-C\right|}{2A+B+C}\times \frac{A}{A+\min (B,C)}$

A is the number of individuals of each species that exist at both m and n sites, whereas B and C are the number of individuals that are unique to the m and n sites, respectively^6,10.