Table 2.

Mean ± s.d. of stable isotope results of modern Adélie penguin egg membrane from four breeding colonies in the northern to central Ross Sea, Antarctica. (For each set of isotope values, shared letters (in superscript) indicate no significant differences in means (one-way ANOVA, F3 = 1.2, p < 0.32 for δ13C, F3 = 41.8, p < 0.001 for δ15N).)

locationNδ13C (‰)δ15N (‰)
Cape Adare5−25.0 ± 0.55A9.2 ± 0.38A
Cape Hallett20−24.6 ± 0.55A9.1 ± 0.40A
Adélie Cove15−24.6 ± 0.98A10.2 ± 0.27B
Inexpressible Island21−24.3 ± 1.04A10.0 ± 0.30B