High-precision measurements indicated denitrification rates of ~1.3 mmol N2 m-2 day-1 across major sedimentary facies. The dataset, from the Australian Ocean Data Network, shows denitrifying efficiencies of 75-85% in muddy sediments covering about 70% of the seafloor. It includes integrated fluxes of biogenic N2, ammonia, nitrate, and nitrite, revealing tight coupling of ammonification, nitrification, and denitrification.
Use Cases
- Modeling nitrogen removal efficiency in coastal sediments based on organic carbon loading rates.
- Assessing water quality impacts from sediment nutrient fluxes based on ammonium and N2 release data.
- Studying microbial process coupling in marine sediments based on in-situ nitrate utilization patterns.
Strengths
- Provides direct, high-precision measurements of biogenic N2 fluxes.
- Reports specific denitrification rates (~1.3 mmol N2 m-2 day-1) and efficiencies (75-85%).
- Covers major sedimentary facies, including muddy sediments occupying about 70% of the seafloor.
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 metadata update was 2026-06-04.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- High-precision measurements of N2 and N-metabolite fluxes from benthic chambers.
- Freshness
- Last updated 2026-06-04 07:41:46.701207
- Geography
- Port Phillip Bay