On resemblance measures for ecological studies, including taxonomic dissimilarities and a zero-adjusted Bray–Curtis coefficient for denuded assemblages

Examination of the properties of this ‘zero-adjusted’ Bray–Curtis measure suggests a mechanism for practical classification of the plethora of resemblance measures defined in the literature, and answers questions about whether the different information extracted by some coefficients is more, or less, helpful to the final biological interpretation.