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The role of iron as a micro-nutrient to the Antarctic sea-ice zone algal community - Casey Data
Entry ID: ASAC_3026_Casey

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Summary
Abstract: Public Description of the Project
This project will assess the importance of the trace micro-nutrient element iron to Antarctic sea-ice algal communities during the International Polar Year (2007-2009). We will investigate the biogeochemistry of iron, including a comprehensive examination of its distribution, speciation, cycling and role in fuelling ice-edge phytoplankton blooms. A significant part of this research will concentrate on the the influence of organic exopolysaccharides on iron solubility, complexation and bioavailability, both within the ice and in surrounding snow and surface seawater. This innovative research will improve our understanding of key processes that control the productivity of the climatically-important Antarctic sea-ice zone.

Project objectives:
This project will assess the importance of the trace element iron (Fe) as a micro-nutrient to seasonal sea-ice algal communities in the Australian sector of Antarctica during the International Polar Year (2007-09). We will investigate the biogeochemistry of Fe, including a comprehensive examination of its distribution, speciation, cycling and role in fuelling ice-edge phytoplankton blooms. A significant part of this research will concentrate on the influence of organic exopolysaccharides (EPS) on Fe solubility and complexation (and hence bioavailability), both within the ice and in surrounding surface waters. This innovative research will improve our understanding of key processes that control the productivity of the climatically-important Antarctic sea-ice zone.

This metadata record describes data collected at Casey Station as part of project 3026.

Collected data from the time series experiment in sea ice near Casey station Antarctica (66 degrees 13 minutes 07 seconds S, 110 degrees 39 minutes 02 seconds E). Measurements were made at the same location during seven consecutive study days between 10 November and 2 December 2009. Variables measured were pFe (particulate Fe), TDFe (total dissolvable Fe), dFe (dissolved Fe), plFe (particulate leachable Fe), PON (particulate organic nitrogen), POC (particulate organic carbon), Chl a (Chlorophyll a), salinity, ice temperature, vb/v (brine volume fraction), mean daily air temperature, and max daily air temperature.
Measurements were taken on each study day of the snow directly overlying the sea ice (SNOW), a shallow and a deep brine (B- and B+, respectively), three sections of the sea ice core at median depths 3, 33, and 73 centimeters (SI1, SI2, and SI3, respectively) as well as two consecutive sections in the lower most basal ice (SI4 and SI5). Finally, four samples were taken of the underlying seawater at 0, 5, 10 and 15 m (SW0, SW5, SW10 and SW15, respectively).

Related URL
Link: GET DATA
Description: Download point for the data


Link: VIEW PROJECT HOME PAGE
Description: Public information for ASAC project 3026


Link: VIEW RELATED INFORMATION
Description: Citation reference for this metadata record and dataset.


Parent DIF
This description is a member of a collection. The collection is described in
ASAC_3026


Geographic Coverage
 N: -66.2 S: -66.3  E: 110.7  W: 110.6

Data Set Citation
Dataset Originator/Creator: Van Der Merwe, P. and Nichols, C.M.
Dataset Title: The role of iron as a micro-nutrient to the Antarctic sea-ice zone algal community - Casey Data
Dataset Series Name: CAASM Metadata
Dataset Release Date: 2012-02-28
Dataset Publisher: Australian Antarctic Data Centre
Dataset DOI: doi:10.4225/15/514A83EF4D31E
Online Resource: https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD...


Temporal Coverage
Start Date: 2009-11-10
Stop Date: 2009-12-02


Location Keywords
OCEAN > SOUTHERN OCEAN
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR


Science Keywords
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >SURFACE TEMPERATURE >AIR TEMPERATURE    [Definition]
CRYOSPHERE >SEA ICE >ICE TEMPERATURE    [Definition]
CRYOSPHERE >SEA ICE    [Definition]
OCEANS >OCEAN CHEMISTRY >CARBON    [Definition]
OCEANS >OCEAN CHEMISTRY >NITROGEN    [Definition]
OCEANS >OCEAN CHEMISTRY >NUTRIENTS    [Definition]
OCEANS >OCEAN CHEMISTRY >ORGANIC CARBON    [Definition]
OCEANS >SALINITY/DENSITY >SALINITY    [Definition]
OCEANS >SEA ICE    [Definition]
CRYOSPHERE >SEA ICE >SNOW DEPTH    [Definition]
OCEANS >SEA ICE >SNOW DEPTH    [Definition]
BIOLOGICAL CLASSIFICATION >PLANTS >MICROALGAE    [Definition]
OCEANS >OCEAN CHEMISTRY >CHLOROPHYLL


ISO Topic Category
ENVIRONMENT
OCEANS


Platform
FIELD SURVEYS    [Information]
FIELD INVESTIGATION    [Information]


Quality
See the parent record for further information.


Access Constraints
These data are publicly available from the provided URL.


Use Constraints
This data set conforms to the PICCCBY Attribution License
(http://creativecommons.org/licenses/by/3.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_302... when using these data.


Keywords
Iron


Data Set Progress
COMPLETE


Originating Center
Australian Antarctic Division


Data Center
Australian Antarctic Data Centre, Australia    [Information]
Data Center URL: http://data.aad.gov.au

Data Center Personnel
Name: DATA OFFICER AADC
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: metadata at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia



Distribution
Distribution_Media: HTTP
Distribution_Size: 30 kb
Distribution_Format: excel
Fees: Free


Personnel
PIER VAN DER MERWE
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Phone: +61 3 62267546
Fax: +61 3 6226 2973
Email: pvander at utas.edu.au
Contact Address:
Private Bag 77
City: Hobart
Province or State: Tasmania
Postal Code: 7001
Country: Australia


CAROL MANCUSO NICHOLS
Role: INVESTIGATOR
Phone: +61 3 6232 5381
Email: Carol.Nichols at csiro.au
Contact Address:
CSIRO Marine and Atmospheric Research
Castray Esplanade
City: Hobart
Province or State: Tasmania
Postal Code: 7001
Country: Australia


DAVE J. CONNELL
Role: DIF AUTHOR
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: dave.connell at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia



Creation and Review Dates
DIF Creation Date: 2012-02-27
Last DIF Revision Date: 2016-01-27



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