Antarctic Lake Diatom Abundance and Ozone Correlation Data

Diatom relative abundance data from a proglacial lake sediment profile correlated with measured ozone levels from Faraday/Vernadsky station. The dataset supports a quantitative model for reconstructing past stratospheric ozone variability over Antarctica. Researcher Anna Beatriz Jones Oaquim published this dataset on figshare in March 2026.

Use Cases

• Correlate diatom assemblage data (e.g., Gomphonema sp., Nitzschia cf. kleinteichiana) with measured ozone data to validate proxy relationships.
• Apply the quantitative reconstruction model to Holocene sediment core diatom data for millennial-scale ozone variability analysis.
• Compare recent ozone depletion levels from the model output against a 7,700-year historical reconstruction to assess anomaly magnitude.
• Analyze relative abundance along the sediment profile dated with excess 210Pb to study diatom responses to environmental shifts.

Strengths

• Data enables a quantitative reconstruction model validated against measured ozone station data.
• Temporal coverage extends to a 7,700-year Holocene reconstruction for long-term trend analysis.
• Dataset is openly licensed under CC-BY-4.0.

Limitations

• Dataset is very small at 9.5 KB, indicating limited raw data or a highly summarized model output.
• Geographic scope is restricted to a specific Antarctic ice-free area and proglacial lake.
• Specific row count, column names, and sample data are unavailable, limiting reproducibility checks.

Provenance

Source

figshare, authored by Anna Beatriz Jones Oaquim.

Collection Method

Analysis of diatom relative abundance in a sediment profile dated with excess 210Pb, correlated with ozone measurements from Faraday/Vernadsky station.

Time Range

Includes modern epoch data and a Holocene reconstruction spanning 7,700 years.

Freshness

Last updated March 2026.

Geography

Antarctic proglacial lake sediment core from an ice-free area near Faraday/Vernadsky station.