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Deposition and cycling of carbon and nitrogen in carbonate mud of Arlington and Sudbury Reefs, Great Barrier Reef

This study focused on the dynamics of carbon and nitrogen in carbonate mud from two northern GBR reefs (Arlington and Sudbury).

Rates of mineralization based on net Total CO2 production ranging from 17 to 39 (mean=23) mmol C/m2/d. The overall ratio of O2:CO2 flux was 1.3, close to the Redfield ratio, implying that most of the organic matter that was mineralized was algal.

Sulfate reduction and denitrification rates were estimated; there was no measurable methane production.

Samples were analysed for sediment grain size and percentage silt, sand and clay, water content and for determination of total carbon, total nitrogen, total organic carbon and other elements (P, Ca, Mg, Sr, S and Fe).

Mass sediment accumulation rates were calculated.

Solute fluxes and fluxes of dissolved Fe, Mn and ammonium across the sediment-water interface were measured.

Porewater was analysed for Cl, S, Ca, Fe, Mn, Mg and Sr, and saturation states for calcite and aragonite were calculated.

Data and Resources

Additional Info

Field Value
Title Deposition and cycling of carbon and nitrogen in carbonate mud of Arlington and Sudbury Reefs, Great Barrier Reef
Type Dataset
Language English
Licence Other
Data Status inactive
Update Frequency notPlanned
Landing Page http://data.gov.au/dataset/8a8bb2bb-de4b-464b-af51-c27d8b358bc0
Date Published 2017-03-24
Date Updated 2017-04-15
Contact Point
Australian Institute of Marine Science
adc@aims.gov.au
Geospatial Coverage {"type": "Polygon", "coordinates": [[[143.5, -18.0], [146.2, -18.0], [146.2, -13.5], [143.5, -13.5], [143.5, -18.0]]]}
Jurisdiction Commonwealth of Australia
Data Portal Australian Oceans Data Network CSW Harvester
Publisher/Agency Australian Institute of Marine Science
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