On the functional diversity of partially distinct species: some theory and a practical example

C. Ricotta; A. Acosta

doi:10.1556/comec.15.2014.2.9

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Community Ecology

Volume/Issue:: Volume 15: Issue 2

On the functional diversity of partially distinct species: some theory and a practical example

Authors:

C. Ricotta

C. Ricotta University of Rome ‘La Sapienza’ Department of Environmental Biology Piazzale Aldo Moro 5 00185 Rome Italy

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and

A. Acosta

A. Acosta University of Roma 3 Department of Sciences Viale Marconi 446 00146 Rome Italy

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Pages:: 205–211

Online Publication Date:: 17 Nov 2014

Publication Date:: 01 Dec 2014

Article Category:: Research Article

DOI:: https://doi.org/10.1556/comec.15.2014.2.9

Keywords:: Equivalent number of species; Functional traits; Mean species dissimilarity; Rao’s Quadratic diversity; Sand dune ecosystems

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Due to its nonlinearity with respect to species addition, some applications of the Rao quadratic diversity are meaningful only if they are first transformed into their equivalent number of species, which is the theoretical species richness of a maximally distinct and perfectly even community with the same diversity as the original community. In this paper, relaxing the requirement of maximal distinction among species, we generalize the notion of the equivalent number of species for the Rao diversity to partially distinct species. The biological meaning of this proposal is illustrated with one dedicated case study in sand dune communities in Italy. According to our results, the proposed approach proved appropriate for comparing the functional diversity of different plant communities with varying levels of environmental constraints.

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Community Ecology An Interdisciplinary Journal Reporting Progress in Community and Population Studies

Print ISSN:: 1585-8553

Online ISSN:: 1588-2756

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Community Ecology
Language	English
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ISSN	1585-8553 (Print)
ISSN	1588-2756 (Online)