Southern Ocean Foraminifera Carbon Isotope Measurements from Sediment Traps

Carbon isotopic composition measurements for three species of planktonic foraminifera collected from Southern Ocean sediment traps. The dataset enables analysis of disequilibrium effects and the oceanic Suess effect across subtropical to polar frontal environments. Data was contributed by the Australian Ocean Data Network and last updated in April 2026.

Use Cases

• Quantify the latitudinal trend in foraminiferal d13C disequilibrium using species-specific isotope data.
• Estimate the modern oceanic Suess effect by comparing sediment trap d13C values with core top samples.
• Correlate corrected d13C for Globigerina bulloides with seasonal nutrient changes at each trap site.
• Validate laboratory-derived temperature-disequilibrium relationships against field measurements from this study.

Strengths

• Includes data for three distinct foraminifera species (Globigerina bulloides, Globorotalia inflata, Neogloboquadrina pachyderma)
• Covers a latitudinal gradient from subtropical to polar frontal environments in the Southern Ocean

Limitations

• Specific row count, column count, and sample size are unknown
• Data format is HTML, which may require extraction for quantitative analysis

Provenance

Source

Australian Ocean Data Network

Collection Method

Measurements from sediment traps collecting annual foraminifera flux

Time Range

null

Freshness

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Geography

Southern Ocean, western Pacific/Southern Australia sector