Our comparison of the paired mixed‐effect models (conducted for δ 13 C and δ 15 N separately) testing for species differences indicated that the models including species performed far better than the models that did not include species (Table 3 ): the effect of species was highly significant for both 13 C ( F (5) = 25.438, P (> F ) = 6.451e −15 ) and 15 N ( F (5) = 9.7253, P (> F ) = 3.628e −07 ) (Table 3 ).
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Beyond trophic morphology: stable isotopes reveal ubiquitous versatility in marine turtle trophic ecology.
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