Diatom-Driven Nutrient Fluxes in a Temperate Australian Estuary

Diatom biomass sinking drives nutrient removal in St. Georges Basin, a coastal lagoon in southeastern Australia. The dataset contains measurements of benthic nutrient and gas fluxes, water column properties, and sediment characteristics from a late spring study. It was contributed by the Australian Ocean Data Network and last updated in April 2026.

Use Cases

• Analyze relationships between benthic TCO2 and Si fluxes to infer diatom-driven carbon-silicon coupling.
• Model nutrient limitation by examining DIN:DIP benthic flux ratios ranging from 290 to 900.
• Study phosphorus burial efficiency by correlating decomposing diatom biomass with net N2 production data.
• Investigate primary production controls using water column oligotrophic state and P limitation indicators.

Strengths

• Focus on a specific, well-defined temperate estuary (St. Georges Basin, Australia).
• Includes multiple related data types: benthic fluxes, water column properties, and sediment data.
• Dataset is actively maintained, with a metadata update in April 2026.

Limitations

• Sample size and temporal coverage (only late spring) are unknown, limiting seasonal analysis.
• Data format is PDF/HTML, requiring extraction for computational analysis.
• Geographic scope is limited to a single coastal lagoon.

Provenance

Source

Australian Ocean Data Network

Collection Method

Field study measuring benthic fluxes, water column, and sediment properties.

Time Range

Late spring (specific year unknown).

Freshness

Metadata last updated 2026-04-04.

Geography

St. Georges Basin, a coastal lagoon in southeastern Australia.