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Quantifying the taxonomic diversity in real species communities

Caretta Cartozo, Cécile and Garlaschelli, Diego and Ricotta, Carlo and Barthélemy, Marc and Caldarelli, Guido Quantifying the taxonomic diversity in real species communities. Journal of Physics A: Mathematical and Theoretical, 41 (22). p. 224012. ISSN 1751-8113 (2008)

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We analyze several florae (collections of plant species populating specific areas) in different geographic and climatic regions. For every list of species we produce a taxonomic classification tree and we consider its statistical properties. We find that regardless of the geographical location, the climate and the environment all species collections have universal statistical properties that we show to be also robust in time. We then compare observed data sets with simulated communities obtained by randomly sampling a large pool of species from all over the world. We find differences in the behavior of the statistical properties of the corresponding taxonomic trees. Our results suggest that it is possible to distinguish quantitatively real species assemblages from random collections and thus demonstrate the existence of correlations between species.

Item Type: Article
Identification Number: 10.1088/1751-8113/41/22/224012
Uncontrolled Keywords: PACS: 87.23.-n Ecology and evolution; 02.10.Ox Combinatorics; graph theory; 89.75.Hc Networks and genealogical trees; 87.10.-e General theory and mathematical aspects
Subjects: H Social Sciences > HA Statistics
Q Science > QA Mathematics
Q Science > QC Physics
Q Science > QH Natural history
Research Area: Economics and Institutional Change
Depositing User: Ms T. Iannizzi
Date Deposited: 01 Feb 2012 11:39
Last Modified: 08 Mar 2018 17:06
URI: http://eprints.imtlucca.it/id/eprint/1095

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