Benthic Nutrient Fluxes in Port Phillip Bay 1995-1996

Port Phillip Bay, Australia, was the site of a benthic flux study from February 1995 to January 1996. The research focused on spatial and temporal consistency of nutrient fluxes, chamber calibration, bio-irrigation, and direct N2 measurements to assess denitrification rates and efficiencies. Key findings include the confirmation of denitrification in bay sediments, high denitrifying efficiencies in the central basin, and a significant seasonal effect at the Yarra Estuary site.

Use Cases

• Modeling coastal nitrogen budgets based on direct measurements of N2 and nutrient fluxes.
• Assessing seasonal and spatial variability in denitrification efficiency across different sediment sites.
• Calibrating benthic chamber methodologies using the provided calibration study results.
• Studying microbial microniche processes linking organic carbon oxidation to nitrification and denitrification.

Strengths

• Study includes direct mass spectrometric and gas chromatographic measurements of N2 fluxes, providing robust evidence for denitrification.
• Temporal coverage spans nearly a full year (Feb 1995-Jan 1996), allowing for seasonal analysis.
• Research design included multiple key sites (e.g., Site 16 Yarra Estuary, Site 37 central basin) for spatial comparison.

Limitations

• Critical metadata is missing: specific column names, row counts, file sizes, and license information are not provided.
• The last updated dates conflict between sources (2026-04-30 and 2026-04-20), casting doubt on metadata maintenance.
• Data format is listed as PDF/HTML, suggesting the primary data may be embedded in reports rather than in a structured, machine-readable tabular format.

Provenance

Source

Geoscience Australia Data

Collection Method

Field measurements using benthic chambers, gas chromatography, and mass spectrometry.

Time Range

February 1995 to January 1996

Freshness

Last updated dates are in April 2026, which is a future date and may indicate a metadata error.

Geography

Port Phillip Bay, Victoria, Australia, with specific sites including the Yarra Estuary (Site 16) and central basin (Site 37).