1. Plot of PC1 of femur bone measurements from mainland emus, Kangaroo Island emus, and King Island emus versus natural log of island size.
Plot of PC1 of femur bone measurements from mainland emus, Kangaroo Island emus, and King Island emus versus natural log of island size. The regression line with formula is shown. Pearson's correlation coefficient and the p-value testing for a linear relationship are noted in the bottom left. Tasmania's position on the regression line is estimated from the actual island size, as the single Tasmanian emu sample had missing data and, therefore, could not be included in the PCA. The tarsometatarsi plot is qualitatively similar (electronic supplementary material, figure S12). (Online version in colour.)‏
Vicki A. Thomson et al. Biol. Lett. 2018;14:
© 2018 The Author(s)‏