Concentration Curves and Have-Statistics for Ecological Analysis of Diversity: Part II: Species and Other Diversity

Goodwin, D.G. & Vaupel, J.W. (1985). Concentration Curves and Have-Statistics for Ecological Analysis of Diversity: Part II: Species and Other Diversity. IIASA Working Paper. IIASA, Laxenburg, Austria: WP-85-090

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Abstract

The application of concentration curves and have-statistics to studies of dominance and evenness in reproductive success was discussed in Part I of this series of three papers. Concentration curves and have-statistics can also aid ecologists in studies of species diversity and community structure; a start in this direction was made by Patil and Taillie (1979) and Taillie (1979). Essentially, the method is the same as before except that now the "haves" are species rather than individuals and the "hads" are individuals, biomass, caloric intake, etc., rather than an individual's offspring. In addition, concentration curves and have-statistics can be applied to other ecological topics pertaining to variation and inequality, including the temporal or spatial distribution of some resource, such as food supply or rainfall. Various examples, from studies of diatoms, a community of herbaceous plants, a tropical forest, a model of niche preemption, and temporal variation in the breeding of tropical and temperate bird species illustrate this approach.

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