oxygen isotopes in benthic foraminifera from the Namibian Margin Version 1

This dataset contains benthic foraminiferal assemblage counts, stable carbon isotope δ13C measurements, and pore-water chemistry data collected from the Namibian margin during research cruises 64PE449 and 64PE450. The data was collected to investigate the relationship between benthic foraminifera and hypoxic bottom-water conditions in the region.

The dataset includes raw census counts of benthic foraminifera species across multiple depth intervals (0–10 cm), high-resolution pore-water concentration profiles (DIC, NH4+,HS-,NO3-, and SRP), and paired δ13C stable isotope measurements of specific foraminiferal tests. To ensure maximum transparency and reproducibility, the dataset preserves all raw instrument output, including a binary flag column (Include_d13C) where reliable isotope measurements are marked 1 and mechanically compromised or statistically unreliable runs are marked 0. Included R scripts provide the complete analytical workflow used to filter data, calculate diversity indices (species accumulation, Fisher's alpha), perform multivariate statistical analyses (PERMANOVA/PERMDISP, PCoA), and generate multi-panel depth profiles.