Benthic chamber measurements of oxygen, ammonium, nitrate, nitrite, phosphate, silicate, TCO2, and alkalinity define solute exchange rates between sediment and water in Port Phillip Bay. Data from the summers of 1994 and 1995 across various sites show benthic recycling accounted for 63% and 72% of the annualized N and P input to the entire bay, respectively. The dataset, sourced from the Australian Ocean Data Network, also includes radon-222 and CsCl spike injection measurements to study bio-irrigation.
Use Cases
- Modeling coastal nutrient budgets based on benthic flux rates for oxygen and nutrients.
- Comparing regional sediment biogeochemistry based on measurements from four distinct bay regions.
- Studying denitrification efficiency in coastal sediments based on the reported 63% loss of potentially recyclable nitrogen.
- Investigating bio-irrigation impacts on solute exchange using radon-222 and CsCl tracer methods described in the study.
Strengths
- Includes measurements for eight key solutes (oxygen, ammonium, nitrate, nitrite, phosphate, silicate, TCO2, alkalinity) involved in remineralization.
- Temporal coverage includes two summer sampling campaigns in 1994 and 1995, allowing for year-to-year comparison.
- Spatial coverage distinguishes four regions within Port Phillip Bay, with the northern region showing 3-30 times greater nutrient regeneration rates.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment for large-scale modeling.
- Data may reflect temporal bias inherent to the specific summer sampling periods of 1994 and 1995.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Benthic chamber measurements and radon-222/CsCl spike injection chamber measurements.
- Time Range
- Summers of 1994 and 1995
- Freshness
- Last updated 2026-04-16 09:42:39.273434; freshness should be verified.
- Geography
- Port Phillip Bay, Australia