Southern Ocean Planktonic Foraminifera Carbon Isotope Records from Sediment Traps

Carbon isotopic composition (d13C) measurements for three species of planktonic foraminifera collected from Southern Ocean sediment traps. The data, from the Australian Ocean Data Network, allows comparison with dissolved inorganic carbon to determine disequilibrium effects and estimate the oceanic Suess effect. The sediment traps represent the annual flux in environments from the Subtropical to Polar Frontal zones in the western Pacific/Southern Australia sector.

Use Cases

• Calibrating foraminiferal d13C as a nutrient tracer in paleoceanography based on the correlation with seasonal nutrient changes mentioned for G. bulloides.
• Modeling the oceanic Suess effect's imprint on marine carbon isotopes based on the modern depletion observed in core-top comparisons.
• Analyzing latitudinal trends in isotopic disequilibrium between foraminifera and dissolved inorganic carbon (DIC) across frontal zones.
• Investigating the relationship between temperature and isotopic disequilibrium, particularly for Globigerina bulloides.

Strengths

• Focuses on three key planktonic foraminifera species (Globigerina bulloides, Globorotalia inflata, Neogloboquadrina pachyderma) for comparative analysis.
• Data integrates sediment trap flux with core-top samples to assess modern changes like the Suess effect.
• Description details a specific latitudinal transect from Subtropical to Polar Frontal environments in the western Pacific/Southern Australia sector.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last updated 2026-04-10 16:40:12.939714; freshness should be verified.

Provenance

Source

Australian Ocean Data Network

Collection Method

Measurements from sediment traps collecting the annual flux of foraminifera.

Time Range

Seasonal/annual flux data; specific years not stated.

Freshness

Last updated 2026-04 10 16:40:12.939714

Geography

Southern Ocean, western Pacific/Southern Australia sector, from Subtropical to Polar Frontal zones.