Benthic recycling accounted for 63% and 72% of the annualized nitrogen and phosphorus input, respectively, to Port Phillip Bay. Measurements of oxygen, ammonium, nitrate, phosphate, silicate, and other solutes were taken using benthic chambers at various sites during the summers of 1994 and 1995. The data, from Geoscience Australia, distinguishes four bay regions and quantifies nutrient regeneration rates and denitrification efficiency.
Use Cases
- Modeling coastal nutrient budgets based on benthic solute exchange rates.
- Comparing regional sediment biogeochemistry based on measurements from four distinct bay regions.
- Studying denitrification efficiency in coastal sediments based on the described loss of potentially recyclable nitrogen.
- Analyzing the relationship between bio-irrigation and nutrient flux using radon-222 and CsCl tracer methods mentioned in the description.
Strengths
- Quantifies nutrient regeneration rates with regional comparisons, identifying a northern region with 3-30 times greater rates.
- Provides bay-wide estimates of benthic contribution to nutrient budgets, accounting for 63% of N and 72% of P inputs.
- Uses multiple measurement methods, including benthic chambers and tracer studies with radon-222 and CsCl.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data is from a specific time period (1994-1995); its relevance to current conditions may be limited.
Provenance
- Source
- Geoscience Australia Data
- Collection Method
- Benthic chamber measurements and tracer studies (radon-222, CsCl spike injection).
- Time Range
- Summers of 1994 and 1995
- Freshness
- Last updated 2026-04-30 14:07:51.691373; freshness should be verified.
- Geography
- Port Phillip Bay, Australia