The role of iron as a micro-nutrient to the Antarctic sea-ice zone algal community

• Other Authors: AADC (owner), AADC, DATA OFFICER (distributor), AADC, DATA OFFICER (custodian), AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith), Australian Antarctic Data Centre (publisher), Australian Antarctic Division (sponsor), CONNELL, DAVE J. (author), TRULL, THOMAS WILLIAM (collaborator), TRULL, THOMAS WILLIAM (hasPrincipalInvestigator), Trull, T.W. (originator)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: biota; environment; oceans; EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE DEPTH/THICKNESS; ICE FLOES; ICE TEMPERATURE; ICE TYPES; PACK ICE; SEA ICE; SNOW/ICE > SNOW/ICE; OCEANS > MARINE ENVIRONMENT MONITORING; OCEAN CHEMISTRY > AMMONIA; BIOGEOCHEMICAL CYCLES; NITRATE; Antarc*; Antarctic; Antarctica; Sea ice
• Online Access: https://researchdata.edu.au/the-role-iron-algal-community/2817840

Progress Code: completed Statement: The values provided in temporal and spatial coverage are approximate only. In the 2007/2008 Season significant work on this project was carried out on the SPIEX voyage - (Sea Ice Physics and Ecosystems eXperiment). See the child metadata record for more information. Taken from the 2008-2009 Progress Report: Laboratory activity/analysis: Laboratory activity included analysis of exopolysaccharides (EPS) using the PSA and alcian blue methods, and showed good agreement with previously published data. Dissolved iron (less than 0.2 microns) and total dissolvable iron (unfiltered) were measured using a FIA-CL method adapted to high gradients of salinity and concentrations. Polycarbonate (PC) filters (Nuclepore 0.2 micron pore size) retaining particulate metals were digested in a mixture of strong, ultrapure acids (750 micro litre 12N HCl, 250 micro litre 40% HF, 250 micro litre 14N HNO3) on a hotplate at 125 degrees C for 8 h. The procedure was successfully applied to plankton, estuarine and river sediment reference materials to verify the recovery of the digestion treatment. The concentrations of particulate iron (PFe) were determined by high resolution ICP-MS at the Central Science Laboratory at UTAS. All analytical milestones were successfully completed, data compiled and prepared for publication. Difficulties affecting project: The second part of the project (field sampling at Casey) was not achieved during austral spring 2008, due to unavailability of berths at Casey Station. Taken from the 2009-2010 progress report: Field work: The collection of a time series of Antarctic coastal sea ice was completed off the coast of Casey station Antarctica between Oct and Dec 2009. Two researchers, Pier van der Merwe and Delphine Lannuzel were flown into Casey station on FA02. Lab facilities were provided for sample processing and trained staff supplied to escort the researchers into the field via Hagglunds. Sample processing and analysis is 90% completed and the write up of the data is ...