What is a species? A new universal method to measure differentiation and assess the taxonomic rank of allopatric populations, using continuous variables

ZooKeys
Thomas M Donegan

Abstract

Existing models for assigning species, subspecies, or no taxonomic rank to populations which are geographically separated from one another were analyzed. This was done by subjecting over 3,000 pairwise comparisons of vocal or biometric data based on birds to a variety of statistical tests that have been proposed as measures of differentiation. One current model which aims to test diagnosability (Isler et al. 1998) is highly conservative, applying a hard cut-off, which excludes from consideration differentiation below diagnosis. It also includes non-overlap as a requirement, a measure which penalizes increases to sample size. The "species scoring" model of Tobias et al. (2010) involves less drastic cut-offs, but unlike Isler et al. (1998), does not control adequately for sample size and attributes scores in many cases to differentiation which is not statistically significant. Four different models of assessing effect sizes were analyzed: using both pooled and unpooled standard deviations and controlling for sample size using t-distributions or omitting to do so. Pooled standard deviations produced more conservative effect sizes when uncontrolled for sample size but less conservative effect sizes when so controlled. Pooled models...Continue Reading

References

May 23, 2000·Proceedings. Biological Sciences·J J Wiens, M R Servedio
Aug 22, 2003·Nature·Michael D SorensonRobert B Payne
Jan 14, 2004·The Journal of Experimental Biology·Jeffrey PodosMarcos R Rossi-Santos
Oct 20, 2007·Biological Reviews of the Cambridge Philosophical Society·Shinichi Nakagawa, Innes C Cuthill
Aug 25, 2009·Molecular Phylogenetics and Evolution·José S L PatanéJohn M Bates
May 12, 2011·Molecular Phylogenetics and Evolution·Jaime A Chaves, Thomas B Smith
Jul 23, 2013·Biological Reviews of the Cambridge Philosophical Society·George Sangster
Nov 24, 2016·PloS One·George F BarrowcloughRobert M Zink
Jun 2, 2017·Nature·Stephen T Garnett, Les Christidis
Mar 15, 2018·PLoS Biology·Scott A ThomsonHong-Zhang Zhou

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