skbio.math.diversity.alpha.strong

skbio.math.diversity.alpha.strong(counts)[source]

Calculate Strong’s dominance index (Dw).

Parameters:

counts : 1-D array_like, int

Vector of counts.

Returns:

double

Strong’s dominance index (Dw).

Notes

Strong’s dominance index is defined in [R64]. The implementation here is based on the description given in the SDR-IV online manual [R65].

References

[R64](1, 2) Strong, W. L., 2002 Assessing species abundance uneveness within and between plant communities. Community Ecology, 3, 237-246.
[R65](1, 2) http://www.pisces-conservation.com/sdrhelp/index.html