δ18O profiles from shelled pteropods are used to estimate calcification depths in the Southern Ocean. The oxygen isotopic composition of Limacina rangii shells was compared to seawater δ18O derived from Argo float salinity and temperature measurements. Shallow calcification depths (13-126 m) were detected in summer-autumn, while winter-spring calcification occurred deeper, averaging 525 m.
Use Cases
- Estimating calcification depth of pteropods based on δ18O isotopic comparisons
- Assessing seasonal variations in pteropod shell formation depth based on summer-autumn and winter-spring data
- Modeling the impact of shoaling aragonite saturation horizons on deep-water calcifying species
Strengths
- Includes δ18O profiles derived from Argo float salinity and temperature measurements
- Provides specific calcification depth ranges: 13-126 m for summer-autumn and an average maximum of 525 m for winter-spring
Limitations
- Column-level documentation is absent; field semantics must be inferred after download
- Row count is unknown, which may limit suitability assessment
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Stable oxygen isotopic analysis of Limacina rangii shells collected by sediment traps in the subantarctic zone
- Freshness
- Last updated 2026-04-29 06:46:36.883008; freshness should be verified
- Geography
- Southern Ocean, subantarctic zone