Oxygen and carbon isoscapes for the Baltic Sea: Testing their applicability in fish migration studies.

ABSTRACT: Conventional tags applied to individuals have been used to investigate animal movement, but these methods require tagged individuals be recaptured. Maps of regional isotopic variability known as "isoscapes" offer potential for various applications in migration research without tagging wherein isotope values of tissues are compared to environmental isotope values. In this study, we present the spatial variability in oxygen (δ18OH2O) and dissolved inorganic carbon (δ¹³ C_DIC) isotope values of Baltic Sea water. We also provide an example of how these isoscapes can reveal locations of individual animal via spatial probability surface maps, using the high-resolution salmon otolith isotope data from salmon during their sea-feeding phase in the Baltic Sea. A clear latitudina

SUBMITTER: Torniainen J 

PROVIDER: S-EPMC5383481 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature