Species-specific foraminifera-bound nitrogen isotope and foraminiferal calcite oxygen and carbon isotope measurements from DSDP Site 516 in the South Atlantic over a glacial-interglacial cycle
2025
Auderset, Alexandra | Smart, Sandi | Ryu, Yeongjun | Marconi, Dario | Ren, Haojia Abby | Heins, Lena | Vonhof, Hubert B | Schiebel, Ralf | Repschläger, Janne | Sigman, Daniel M | Haug, Gerald H | Martínez-García, Alfredo
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.
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