BMC Ecology and Evolution

Table 4 Projection of the original morphological characters onto the first eight PCO axes

From: Qualitative skeletal correlates of wing shape in extant birds (Aves: Neoaves)

	PCO1	PCO2	PCO3	PCO4	PCO5	PCO6	PCO7	PCO8
drp	−0.58	0.25	−0.16	0.98	0.29	−0.26	−1.54	−0.13
crp	−0.41	1.05	0.17	−0.22	−0.42	−0.43	0.19	−0.15
dpf	−0.78	−0.77	−0.52	−0.31	−0.11	0.31	0.16	−2.01
iip1	−0.43	0.03	0.12	−0.22	−0.83	0.96	−0.24	0.29
iip2	−0.68	0.08	−0.75	−0.39	0.65	0.01	0.15	0.35
fp	−0.45	0.00	0.90	−0.45	0.73	−0.16	−1.46	−0.19

This matrix was used to transform the loadings of PCO axes in the RDA ordination into a biplot of the original morphological variables (Figure 2a).

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ISSN: 2730-7182

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