The Shannon-Wiener diversity index is based on the notion of entropy and measures population heterogeneity.
- an object of class matrix (or which can be coerced to that class), where each column represents the distribution of a group within spatial units. The number of columns should be greater than 1 (at least 2 groups are required). You should not include a column with total population, because this will be interpreted as a group.
Shannon-Wiener diversity index
Shannon C. E. (1948) A mathematical theory of communication. Bell System Technical Journal (27)
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