Shannon-Weiner diversity index
also Shannon-Weaver diversity index a measure of the diversity of a community:
| s | ||
| H'= − | ∑ | pi ln pi |
| i=1 |
where H' is the Shannon-Weiner diversity index, s is species richness (number of species), and pi is proportion abundance contributed by the ith species to the total —see Simpson's diversity index, diversity indexThis definition last updated 12/09/2008