Abstract

Summary Stable isotope analysis of Baltic Sea cod from the Bornholm Sea (ICES-SD 25) and western Baltic (Belt Sea, ICES-SD 22) revealed significant differences in the δ15N and δ13C values of the dorsal muscle, as well as in the δ18O values of otoliths. The method pledges to become especially appropriate to the Baltic due to the high variability in oxygen isotope ratios associated with its estuarine nature.

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