Renkonen similarity index

The Renkonen similarity index (P), is a measure of dissimilarity between two communities (sites), based on relative (proportional) abundances $p_i=n_i/\sum n_i$ of individuals of composite species. It was developed by the botanist Olavi Renkonen and published in 1938.

$P=\sum min(p_1;p_2)$,

$p_1$ - percentage structure of one set,

$p_2$ - percentage structure of second set.

The codomain of this distance function ranges from 1 (identical proportional abundances) to 0 (no taxa shared).

See also

• Index of dissimilarity

References

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