# skbio.diversity.alpha.menhinick¶

skbio.diversity.alpha.menhinick(counts)[source]

Calculate Menhinick’s richness index.

State: Experimental as of 0.4.0.

Menhinick’s richness index is defined as:

$D_{Mn} = \frac{S}{\sqrt{N}}$

where $$S$$ is the number of OTUs and $$N$$ is the total number of individuals in the sample.

Assumes square-root accumulation.

Parameters

counts (1-D array_like, int) – Vector of counts.

Returns

Menhinick’s richness index.

Return type

double

Notes

Based on the description in 1.

References

1

Magurran, A E 2004. Measuring biological diversity. Blackwell. pp. 76-77.