Benthic Nutrient Recycling Measurements in Port Phillip Bay, Australia, 1994-1995

Benthic chamber measurements from the Australian Ocean Data Network define solute exchange rates between sediment and water in Port Phillip Bay, Australia. Data from various sites during the summers of 1994 and 1995 quantify fluxes of oxygen, ammonium, nitrate, nitrite, phosphate, silicate, TCO2, and alkalinity. The dataset identifies four distinct bay regions and calculates that benthic recycling accounted for 63% and 72% of annualized nitrogen and phosphorus inputs, respectively.

Use Cases

• Modeling coastal nutrient budgets based on quantified benthic recycling rates for nitrogen and phosphorus.
• Comparing regional sediment biogeochemistry based on identified regions with 3-30 times greater nutrient regeneration rates.
• Studying denitrification efficiency in coastal systems based on the reported 63% loss of potentially recyclable nitrogen.
• Analyzing bio-irrigation impacts on solute exchange based on radon-222 and CsCl spike injection measurements.

Strengths

• Provides specific flux variability metrics, indicating within-site variability is comparable to year-to-year variability (±50%).
• Quantifies significant regional differences, with the northern region having 3-30 times greater nutrient regeneration rates.
• Offers integrated nutrient budget analysis, calculating benthic recycling accounted for 63% and 72% of annualized N and P inputs.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data freshness should be verified; last metadata update is 2026-05-05 00:07:11.688404.

Provenance

Source

Australian Ocean Data Network

Collection Method

Benthic chamber measurements of reactants and products involved with biogenic matter remineralization.

Time Range

Summers of 1994 and 1995

Freshness

Last updated 2026-05-05 00:07:11.688404; freshness should be verified.

Geography

Port Phillip Bay, Australia