Abstract
Problems with the notion of evenness, such as ambiguity, proliferation of indices, choice of indices, etc. can be overcome by a more fundamental, mathematical approach. We show that the Lorenz curve is an adequate representation of evenness. The corresponding Lorenz order induces a partial order in the set of equivalent abundance vectors. Also diversity can adequately be studied through a partial order and represented by a curve derived from the classical Lorenz curve. This curve is known as the intrinsic diversity profile (or k-dominance curve) and was introduced by Patil and Taillie (1979) and Lambshead et al. (1981).
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Rousseau, R., Van Hecke, P., NIjssen, D. et al. The relationship between diversity profiles, evenness and species richness based on partial ordering. Environmental and Ecological Statistics 6, 211–223 (1999). https://doi.org/10.1023/A:1009626406418
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DOI: https://doi.org/10.1023/A:1009626406418