This dataset contains species-specific foraminifera-bound nitrogen isotope (FB-δ15N) measurements from sediment core samples at Deep Sea Drilling Program Site 516, located in the subtropical South Atlantic gyre. Complementary species-specific carbon and oxygen stable isotope measurements were performed on foraminiferal shell carbonate, with additional size-specific carbon and oxygen isotope data collected for two samples. Isotopic measurements were conducted on the following foraminifera species: Trilobatus sacculifer, Globigerinoides ruber ruber, Globigerinoides ruber albus, Globorotalia truncatulinoides, Globigerinella siphonifera, and Globigerina bulloides.The data span a full glacial-interglacial cycle and provide species-specific isotopic variability to evaluate foraminifera-bound nitrogen isotopes as a new tool to determine paleo-photosymbiosis in planktic foraminifera.

Project has been funded by: SNSF mobility grant P2EZP2_200000, Max Planck Society, US NSF OCE grant 0960802, US NSF OCE grant 10011610, US NSF OCE grant 10014342, US NSF OCE grant 10014700, US NSF OCE grant 10015689, US NSF OCE grant 1060947, US NSF OCE grant 1136345.