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. 2011 Jan 1;6(1):113–116. doi: 10.4161/psb.6.1.14191

Figure 2.

Figure 2

Unsupervised classification of fruit-dispersal volatile organic compounds (VOCs) of three sympatric Ficus species using proportional abundance of VOCs. (A) A PCA plot of VOC proportions after transformation employing the clr (centered log ratio) method as recommended by Aitchison. (B) An MDS plot of the untransformed proportions of the same VOCs using Random Forests.