Redox elements as indicators of biological processes in the Southern Ocean

Production of the arsenic species total inorganic arsenic [As(V+III)],arsenite [As(III)], monomethyl arsenic (MMA) and dimethyl arsenic (DMA) was studied in the Subantarctic Zone (SAZ) of the Southern Ocean, south of Australia, during the austral autumn (March 1998). Surface samples were collected approximately every degree of latitude along the meridional transect 14130' E from 42 to 55 S. In addition, representative vertical profiles were collected at: 4206' S, 14153' E (Subtropical Convergence Zone - STCZ), 4643' S, 14159' E (Subantarctic Zone - SAZ), 5104' S, 14336' E (Subantarctic Front - SAF) and 5344' S, 14142' E (northern branch of the Polar Frontal Zone - PFZ). As(V) was the dominant arsenic species in both vertical profiles and surface waters along the transect. It was also the only species observed at depths greater than 600 m. Production of the reduced arsenic species (As(III), MMA, DMA) was low in these waters compared with other oceanic sites with similar concentrations of chlorophyll a. As(III) concentrations could not be reliably quantified at any sites (less than 0.04 nM). Greatest conversion of arsenic to 'biological' species was found at the surface in the Subtropical Convergence Zone (2.5%) and decreased heading southward to 1% in the Polar Front (PF). While the decline in methyl arsenic production was broadly associated with water temperature and measures of biological production, slightly different trends in methyl arsenic production were found in the SAZ and PF. North of the Subantarctic Front (SAF) methyl arsenic production was well correlated with water temperature, while south of the front no such relation existed. In addition, the ratio of DMA/MMA increased south of the SAF, associated with a change in the microalgal community composition. Low water temperature, phosphate-replete conditions and low biological productivity in the SAZ all contribute to the concentrations of biologically produced arsenic species in this region being amongst the lowest reported for oceanic waters.


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Identification info

Alternate title
Redox elements as indicators of biological processes in the Southern Ocean
Date (Publication)
2001-05-11
Edition
1
Citation identifier
Dataset DOI

Title
Information and documentation - Digital object identifier system
Date (Publication)
2012-04-23
Citation identifier
ISO 26324:2012

Citation identifier
doi:10.4225/15/583e28bce23db

Originator

Butler, E.C.V. and Featherstone, A.

Publisher

Australian Antarctic Data Centre

Principal investigator

BUTLER, EDWARD C. V.
Australian Institute of Marine Science
1526 Cape Cleveland Road
Cape Cleveland
QLD
4810
Australia

Collaborator

FEATHERSTONE, ALISON
University of Tasmania
School of Chemistry
GPO Box 252-75
Hobart
Tasmania
7001
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/ASAC_748

Status
Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia
Topic category
  • Geoscientific information
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
1998-02-28 1998-04-01
Title
A shipboard method for arsenic speciation using semi-automated hydride generation atomic fluorescence spectroscopy.
Date (Publication)
2000
Citation identifier
409

Author

Featherstone, A.M., Boult, P.R., O'Grady, B.V. and Butler, E.C.V.
Name
Analytica Chimica Acta
Page
215-226
Title
Arsenic speciation in estuarine and oceanic waters by hydride generation - atomic fluorescence spectroscopy
Date (Publication)
1999

Author

Featherstone, A.M.

Publisher

University of Tasmania
Name
PhD Thesis
Page
225
Title
Meridional distribution of arsenic species in the subantarctic zone of the Southern Ocean, south of Australia.
Date (Publication)
2001
Citation identifier
106

Author

Featherstone, A. M., Butler, E. C. V. and O'Grady, B. V.
Name
Journal of Geophysical Research Oceans
Page
31657-31668
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > BIOGEOCHEMICAL CYCLES
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > TRACE ELEMENTS
Keywords
  • ARSENIC
  • AU 97/06
  • SPECIATION
  • SAZ CRUISE
NASA/GCMD Earth Science Keywords
  • R/V AA > R/V Aurora Australis
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • CEOS
  • AMD
NASA/GCMD Earth Science Keywords
  • OCEAN > SOUTHERN OCEAN
  • GEOGRAPHIC REGION > POLAR

Resource constraints

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This metadata record is publicly available.

Resource constraints

Access constraints
licence
Other constraints
These data are publicly available for download from the provided URL.

Resource constraints

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Portable Network Graphic
Linkage
Creative Commons by Attribution logo

Title
Attribution 4.0 International (CC BY 4.0)
Website
https://creativecommons.org/licenses/by/4.0/legalcode

Legal code for Creative Commons by Attribution 4.0 International license

Use constraints
licence
Other constraints
This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_748 when using these data.
Language
English
Character encoding
UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Distributor

Fees
Free
Planned available datetime
2001-05-11T00:00:00
Units of distribution
kb
Transfer size
25
Distribution format
  • Excel

OnLine resource
GET DATA

Download point for a readme file and excel spreadsheet

OnLine resource
PROJECT HOME PAGE

Public information for ASAC project 748

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset

Maintenance and update frequency
As needed
Maintenance note
2016-11-30 - record updated by Dave Connell - basic updates. 2019-03-13 - record updated by Dave Connell for ISO compliance.

Metadata

Metadata identifier
string/ASAC_748

Language
English
Character encoding
UTF8

Author

FEATHERSTONE, ALISON
University of Tasmania
School of Chemistry
GPO Box 252-75
Hobart
Tasmania
7001
Australia

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
3a2898e0-5fb8-4a61-b7f9-65e9271d83e7

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2019-03-13T15:44:59

Identifier

Description
metadata.extraction_date

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
8.6

Metadata linkage
http://data.aad.gov.au/metadata/records/ASAC_748

Point of truth for the metadata record

Date info (Creation)
2000-08-04T00:00:00
Date info (Last Update)
2019-03-13

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

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