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The effects of topological inaccuracy in evolutionary trees on the phylogenetic comparative method of independent contrasts

Symonds, Matthew R. E. 2002, The effects of topological inaccuracy in evolutionary trees on the phylogenetic comparative method of independent contrasts, Systematic biology, vol. 51, no. 4, pp. 541-553, doi: 10.1080/10635150290069977.

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Title The effects of topological inaccuracy in evolutionary trees on the phylogenetic comparative method of independent contrasts
Author(s) Symonds, Matthew R. E.ORCID iD for Symonds, Matthew R. E. orcid.org/0000-0002-9785-6045
Journal name Systematic biology
Volume number 51
Issue number 4
Start page 541
End page 553
Total pages 13
Publisher Oxford University Press
Place of publication Oxford, Eng.
Publication date 2002-08
ISSN 1063-5157
1076-836X
Keyword(s) comparative method
computer simulation
independent contrasts
phylogenetic error
random phylogenies
topological inaccuracy
Summary Computer simulations were used to test the effect of increasing phylogenetic topological inaccuracy on the results obtained from correlation tests of independent contrasts. Predictably, increasing the number of disruptions in the tree increases the likelihood of significant error in the r values produced and in the statistical conclusions drawn from the analysis. However, the position of the disruption in the tree is important: Disruptions closer to the tips of the tree have a greater effect than do disruptions that are close to the root of the tree. Independent contrasts derived from inaccurate topologies are more likely to lead to erroneous conclusions when there is a true significant relationship between the variables being tested (i.e., they tend to be conservative). The results also suggest that random phylogenies perform no better than nonphylogenetic analyses and, under certain conditions, may perform even worse than analyses using raw species data. Therefore, the use of random phylogenies is not beneficial in the absence of knowledge of the true phylogeny.
Language eng
DOI 10.1080/10635150290069977
Field of Research 060309 Phylogeny and Comparative Analysis
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2002, Oxford University Press
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039060

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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