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Figure 1

From: Nitrogen and carbon stable isotope analysis sheds light on trophic competition between two syntopic land iguana species from Galápagos

Figure 1

Carbon and nitrogen isotope niche of C. subcristatus and C. marthae males and females. In (A) each dots represents an individual. Solid lines enclose standard ellipse areas with sample size correction (SEAc). Marginal boxplots show the distribution of δ 13C and δ 15 N for each combination of sex and species. Color codes are shown in the top right corner. (B) Shows estimated SEAc for each species and sex. (C) Shows pairwise overlap (expressed as percentage) between each combination of sex and species (CM:F = C. marthae females, CM:M = C. marthae males, CS:F = C. subcristatus females, CS:M = C. subcristatus males). Note that overlap is not symmetrical because values indicate the percentage of overlapping area over each ellipse. Intensity of grey is proportional to overlap.

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