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Oceanic Shoals Commonwealth Marine Reserve - Total sediment metabolism (Dissolved Inorganic Carbon production) and TCO2 pools of seabed sediments..

Geoscience Australia
Radke, L.C. ; Trafford, J.
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.4225/25/54B862BBDA7DC&rft.title=Oceanic Shoals Commonwealth Marine Reserve - Total sediment metabolism (Dissolved Inorganic Carbon production) and TCO2 pools of seabed sediments..&rft.identifier=10.4225/25/54B862BBDA7DC&rft.publisher=Geoscience Australia&rft.description=This resource contains geochemistry data for the Oceanic Shoals Commonwealth Marine Reserve (CMR) in the Timor Sea collected by Geoscience Australia during September and October 2012 on RV Solander (survey GA0339/SOL5650). This dataset comprises total sediment metabolism (dissolved inorganic carbon production) measurments and DIC pools in the upper 2 cm of the seabed. The Oceanic Shoals Commonwealth Marine Reserve survey was undertaken as an activity within the Australian Government's National Environmental Research Program Marine Biodiversity Hub and was the key component of Research Theme 4 - Regional Biodiversity Discovery to Support Marine Bioregional Plans. Hub partners involved in the survey included the Australian Institute of Marine Science, Geoscience Australia, the University of Western Australia, Museum Victoria and the Museum and Art Gallery of the Northern Territory. Data acquired during the survey included: multibeam sonar bathymetry and acoustic backscatter; sub-bottom acoustic profiles; physical samples of seabed sediments, infauna and epibenthic biota; towed underwater video and still camera observations of seabed habitats; baited video observations of demersal and pelagic fish, and; oceanographic measurements of the water column from CTD (conductivity, temperature, depth) casts and from deployment of sea surface drifters. Further information on the survey is available in the post-survey report published as Geoscience Australia Record 2013/38 (Nichol et al. 2013): Nichol, S.L., Howard, F.J.F., Kool, J., Stowar, M., Bouchet, P., Radke, L., Siwabessy, J., Przeslawski, R., Picard, K., Alvarez de Glasby, B., Colquhoun, J., Letessier, T. & Heyward, A. 2013. Oceanic Shoals Commonwealth Marine Reserve (Timor Sea) Biodiversity Survey: GA0339/SOL5650 - Post Survey Report. Record 2013/38. Geoscience Australia: Canberra. (GEOCAT #76658).Maintenance and Update Frequency: asNeededStatement: Bottom sediments were collected using either a Smith McIntyre grab or a Box Core. Surface sediment (0-2 cm) was syringed into falcon vials. Pore waters were removed within 20 minutes of collection, and salinity, temperature and pH measurements were taken. The pore waters were then filtered (0.45 µm) into 3 ml gas-tight vials (pre-charged with 0.025 HgCl2). The procedure was repeated on pore waters from a second bulk sample that was incubated for ~24 hrs at sea surface temperatures. Dissolved inorganic carbon (DIC) concentrations were determined using a DIC analyser and infrared-based CO2 detector. (Geoscience Australia). CO2 production rates were calculated by concentration differences over the incubation period, after correction for CaCO3 fluxes. The average %RSD of the precisions and accuracies of the dissolved inorganic carbon measurements were 1.1 +/-1.1%. The accuracy of the wet/dry weight used in the calculations were better than 1%. Thanks to the crew of the RV Solander for help with sample collection. DIC analyses were provided by R. Falkner and A. Taylor.&rft.creator=Radke, L.C. &rft.creator=Trafford, J. &rft.date=2014&rft.coverage=westlimit=126.9; southlimit=-12.23; eastlimit=127.46; northlimit=-11.3&rft.coverage=westlimit=126.9; southlimit=-12.23; eastlimit=127.46; northlimit=-11.3&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/&rft_rights=Australian Government Security ClassificationSystem https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_subject=oceans&rft_subject=Marine Data&rft_subject=marine biodiversity&rft_subject=marine park&rft_subject=geochemistry&rft_subject=continental shelf&rft_subject=seabed&rft_subject=NERP Marine Biodiversity Hub&rft_subject=marine&rft_subject=NERP&rft_subject=AU-WA&rft_subject=Marine Geoscience&rft_subject=EARTH SCIENCES&rft_subject=GEOLOGY&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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This resource contains geochemistry data for the Oceanic Shoals Commonwealth Marine Reserve (CMR) in the Timor Sea collected by Geoscience Australia during September and October 2012 on RV Solander (survey GA0339/SOL5650). This dataset comprises total sediment metabolism (dissolved inorganic carbon production) measurments and DIC pools in the upper 2 cm of the seabed. The Oceanic Shoals Commonwealth Marine Reserve survey was undertaken as an activity within the Australian Government's National Environmental Research Program Marine Biodiversity Hub and was the key component of Research Theme 4 - Regional Biodiversity Discovery to Support Marine Bioregional Plans. Hub partners involved in the survey included the Australian Institute of Marine Science, Geoscience Australia, the University of Western Australia, Museum Victoria and the Museum and Art Gallery of the Northern Territory. Data acquired during the survey included: multibeam sonar bathymetry and acoustic backscatter; sub-bottom acoustic profiles; physical samples of seabed sediments, infauna and epibenthic biota; towed underwater video and still camera observations of seabed habitats; baited video observations of demersal and pelagic fish, and; oceanographic measurements of the water column from CTD (conductivity, temperature, depth) casts and from deployment of sea surface drifters. Further information on the survey is available in the post-survey report published as Geoscience Australia Record 2013/38 (Nichol et al. 2013): Nichol, S.L., Howard, F.J.F., Kool, J., Stowar, M., Bouchet, P., Radke, L., Siwabessy, J., Przeslawski, R., Picard, K., Alvarez de Glasby, B., Colquhoun, J., Letessier, T. & Heyward, A. 2013. Oceanic Shoals Commonwealth Marine Reserve (Timor Sea) Biodiversity Survey: GA0339/SOL5650 - Post Survey Report. Record 2013/38. Geoscience Australia: Canberra. (GEOCAT #76658).

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Maintenance and Update Frequency: asNeeded
Statement: Bottom sediments were collected using either a Smith McIntyre grab or a Box Core. Surface sediment (0-2 cm) was syringed into falcon vials. Pore waters were removed within 20 minutes of collection, and salinity, temperature and pH measurements were taken. The pore waters were then filtered (0.45 µm) into 3 ml gas-tight vials (pre-charged with 0.025 HgCl2). The procedure was repeated on pore waters from a second bulk sample that was incubated for ~24 hrs at sea surface temperatures. Dissolved inorganic carbon (DIC) concentrations were determined using a DIC analyser and infrared-based CO2 detector. (Geoscience Australia). CO2 production rates were calculated by concentration differences over the incubation period, after correction for CaCO3 fluxes. The average %RSD of the precisions and accuracies of the dissolved inorganic carbon measurements were 1.1 +/-1.1%. The accuracy of the wet/dry weight used in the calculations were better than 1%. Thanks to the crew of the RV Solander for help with sample collection. DIC analyses were provided by R. Falkner and A. Taylor.

Issued: 2014

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127.46,-11.3 127.46,-12.23 126.9,-12.23 126.9,-11.3 127.46,-11.3

127.18,-11.765

text: westlimit=126.9; southlimit=-12.23; eastlimit=127.46; northlimit=-11.3

Subjects
AU-WA | Earth Sciences | Geology | Marine Data | Marine Geoscience | NERP | NERP Marine Biodiversity Hub | Published_External | continental shelf | geochemistry | marine | marine biodiversity | marine park | oceans | seabed |

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Other Information
Link to the web map service (Web service)

url : http://www.ga.gov.au/gis/services/marine_coastal/Oceanic_Shoals_Samples/MapServer/WMSServer

Link to the web feature service (Web service)

url : http://www.ga.gov.au/gis/services/marine_coastal/Oceanic_Shoals_Samples/MapServer/WFSServer

Download the file (xls) (File download)

url : https://d28rz98at9flks.cloudfront.net/78798/78798_Total_Sediment_Metabolism_v2.xls

Identifiers
ACN 633 798 857