High-precision measurements of nitrogen gas and metabolite fluxes from benthic chambers in Port Phillip Bay sediments. The data shows denitrification rates of approximately 1.3 mmol N2 m-2 day-1 and efficiencies of 75-85% at moderate organic carbon loadings, with stoichiometric relationships similar to the Redfield ratio. This dataset was published via the Australian Ocean Data Network and last updated in 2026.
Use Cases
- Modeling nitrogen cycling in coastal ecosystems based on measured N2, ammonia, nitrate, and nitrite fluxes.
- Assessing water quality impacts based on the relationship between organic carbon loading and denitrification efficiency.
- Studying microbial process coupling (ammonification, nitrification, denitrification) in marine sediments.
- Calibrating stoichiometric models for carbon and nitrogen using the reported ratio of 5.7 in muddy sediments.
Strengths
- Provides direct, high-precision measurements of biogenic N2 fluxes, a key metric for denitrification.
- Reports specific quantitative findings, including denitrification rates (~1.3 mmol N2 m-2 day-1) and efficiencies (75-85%).
- Covers a significant spatial context, with muddy sediments occupying about 70% of the seafloor in the study area.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Freshness should be verified; last update was 2026-06-27 19:14:06.951519.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- High-precision measurements from benthic chamber waters in Port Phillip Bay.
- Time Range
- null
- Freshness
- Last updated 2026-06-27 19:14:06.951519; freshness should be verified.
- Geography
- Port Phillip Bay, Australia