Australian Coastal Sediment Nutrient Flux and Water Quality Study

A review of Australian data on sedimentary processes and nutrient diagenesis at the sediment-water interface. The dataset synthesizes findings from benthic chamber studies, including analyses of carbon, nitrogen, phosphorus, iron, and silicon cycling. It was compiled by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Modeling net benthic respiration and nutrient fluxes of N, P, and Si to the water column using stoichiometric relationships from chamber studies.
• Investigating controls on phosphorus fluxes across the sediment-water interface by analyzing interactions with iron cycling data.
• Assessing organic matter sources in sediments by examining Total Organic Carbon (TOC) content and TOC:TN/TP ratios from Australian coastal surveys.
• Evaluating the role of secondary oxidants like nitrate in denitrification processes and the nitrogen balance of coastal systems.
• Identifying transport processes (e.g., bioirrigation, diffusion) controlling metabolite transfers between sediments and overlying waters.

Strengths

• Includes data from the Port Phillip Bay environmental study, a major Australian coastal research project.
• Reviews specific elemental cycles (C, N, P, Fe, Si) and their diagenetic pathways.
• Provides quantitative ranges for sediment Total Organic Carbon (TOC), from <1% to 15% wt.

Limitations

• The primary data format is a review document (PDF/HTML), not a structured, machine-readable table.
• Sample size and spatial coverage of the underlying sediment surveys are described as 'limited'.
• Specific row counts, measurement frequencies, and original data file availability are unknown.

Provenance

Source

Australian Ocean Data Network.

Collection Method

Literature review and synthesis of existing benthic chamber study results and sediment survey data.

Freshness

The metadata record was last updated in April 2026.

Geography

Australian coastal environments, including Port Phillip Bay, estuarine and shelf sediments, a Western Australian coastal lake, and tropical Queensland mangrove sediments.