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Inappropriate application of logarithmic transformations for allometric power functions of morphometric data on acanthocephalan worms

Published online by Cambridge University Press:  10 October 2001

Maarten J. Voordouw
Maarten J. Voordouw
Affiliation:
Department of Biology, University of Victoria, Victoria, BC, Canada
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Abstract

Logarithmic transformation is used to transform multiplicative phenomena to a linear, additive scale. Some workers recommend the transformation x′ = log x + 1 when observed values are equal to zero. However, when working with morphometric data, this transformation is inappropriate because it arbitrarily changes the nature of the relationship between body parts. To illustrate this point, this contribution re-analyses a data set from the recent literature.

Keywords

Acanthocephalaallometrylogarithmic transformationpower functionlife history trade-off
Type
Research Article
Information
Journal of Zoology , Volume 255 , Issue 2 , October 2001 , pp. 279 - 281
Copyright
2001 The Zoological Society of London

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