Spring Phytoplankton Assemblages in the Southern Ocean Between Australia and Antarctica

This dataset comprises of an excel spreadsheet of data collected on the CLIVAR-SR3 cruise in November to December 2001. The spreadsheet contains plankton and carbon data.


From the abstract of the referenced publication:


Variations of phytoplankton assemblages were studied in November-December 2001, in surface waters of the Southern Ocean along a transect between the Sub-Antarctic Zone (SAZ) and the Seasonal Ice Zone (SIZ; 46.9-64.9 degrees S; 142-143 degrees E; CLIVAR-SR3 cruise). Two regions had characteristic but different phytoplankton assemblages. Nanoflagellates (less than 20 microns) and pico-plankton (~2 microns) occurred in similar concentrations along the transect, but were dominant in the SAZ, Sub-Antarctic Front (SAF), Polar Front Zone (PFZ) and the Inter-Polar Front Zone (IPFZ), (46.9-56.9 degrees S). Along the entire transect their average cell numbers in the upper 70 m of water column, varied from 300,000 to 1,100,000 cells per litre. Larger cells (greater than 20 microns), diatoms and dinoflagellates, were more abundant in the Antarctic Zone-South (AZ-S) and the SIZ (60.9-64.9 degrees S). In AZ-S and SIZ diatoms ranged between 270,000 and 1,200,000 cells per litre, dinoflagellates from 31,000 to 102,000 cells per litre. A diatom bloom was in progress in the AZ-S showing a peak of 1,800,000 cells per litre. Diatoms were dominated by Pseudo-nitzschia spp., Fragilariopsis spp., and Chaetoceros spp. Pseudo-nitzschia spp. outnumbered other diatoms in the AZ-S. Fragilariopsis spp. were most numerous in the SIZ. Dinoflagellates contained autotrophs (eg Prorocentrum) and heterotrophs (Gyrodinium/Gymnodinium, Protoperidinium). Diatoms and dinoflagellates contributed most to the cellular carbon: 11-25 and 17-124 micrograms of carbon per litre, respectively. Small cells dominated in the northern region characterised by the lowest N-uptake and new production of the transect. Larger diatom cells were prevalent in the southern area with higher values of N-uptake and new production. Diatom and nanoflagellate cellular carbon contents were highly correlated with one another, with primary production, and productivity related parameters. They contributed up to 75% to the total autotrophic C biomass. Diatom carbon content was significantly correlated to nitrate uptake and particle export, but not to ammonium uptake, while flagellate carbon was well correlated to ammonium uptake, but not to export. Diatoms have contributed highly to particle export along the latitudinal transect, while flagellates played a minor role in the export.


This work was completed as part of ASAC project 1343 (ASAC_1343).


The fields in this dataset are:


Station (depth, position, date, comments)

Species

Cells per millilitre

cell carbon - micrograms per litre

Simple

Identification info

Alternate title
Spring Phytoplankton Assemblages in the Southern Ocean Between Australia and Antarctica
Date (Publication)
2008-05-23
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:10.4225/15/55E91CA3B583A

Originator

Dehairs, F.

Publisher

Australian Antarctic Data Centre

Principal investigator

DEHAIRS, FRANK
Vrije Universiteit Brussel, Pleinlaan 2
B-1050 Brussels
Belgium

Collaborator

DEHAIRS, FRANK
Vrije Universiteit Brussel, Pleinlaan 2
B-1050 Brussels
Belgium

Collaborator

KOPCZYNSKA, ELISABETH
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/ASAC_1343_phytoplankton

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
  • Biota
  • Environment
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
2001-10-30 2001-12-14
Title
Spring phytoplankton assemblages in the Southern Ocean between Australia and Antarctica
Date (Publication)
2007
Citation identifier
31

Author

Kopczynska, E.E, Savoye, N., Dehairs, F., Cardinal, D. and Elskens, M.
Name
Polar Biology
Page
77-88
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > BIOSPHERE > VEGETATION > CARBON
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > FLAGELLATES > DINOFLAGELLATES
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DIATOMS
  • EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON
  • EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON
Keywords
  • plankton
  • phytoplankton
  • carbon
  • CTD
  • Aurora Australis
  • assemblages
NASA/GCMD Earth Science Keywords
  • CTD > Conductivity, Temperature, Depth
  • NISKIN BOTTLES
NASA/GCMD Earth Science Keywords
  • SHIPS
  • R/V AA > R/V Aurora Australis
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • CEOS
  • AMD
NASA/GCMD Earth Science Keywords
  • OCEAN > SOUTHERN OCEAN
  • CONTINENT > ANTARCTICA
  • GEOGRAPHIC REGION > POLAR

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

Access constraints
licence
Other constraints
These data are publicly available for download from the provided URL. These data can also be accessed via the Biodiversity database at the provided URL.

Resource constraints

File type
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 at the provided http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1343_phytoplankton 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
2008-05-23T00:00:00
Units of distribution
MB
Transfer size
1.13
Distribution format
  • excel, pdf

OnLine resource
GET DATA > DIRECT DOWNLOAD

Download point for the data - excel spreadsheet

OnLine resource
GET DATA

Access the data via the Biodiversity Database

OnLine resource
PROJECT HOME PAGE

Public information for ASAC project 1343

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset.

Resource lineage

Statement
Taken from the methods section of the attached paper: Sampling Strategy Eight CTD stations were visited cruising southwards; two stations at 63.9 degrees S (SIZ), 60.9 degrees S (SAZ) were re-visited after 11 and 17 days from the first sampling, respectively. A station at 51 degrees S was sampled for phytoplankton determination during the northbound transect. The stations at 63.9 degrees S were covered by sea ice (CTD 85: ~40-45%; CTD 127: ~25-30%) at the time of sampling. At 64.9 degrees S (CTD 122) sampling was carried out in ice-free (less than 15%) but ice-melt water. Water samples were collected with Niskin bottles from four standard depths (5, 25, 50 and 70m) at all sites except at 46.9 and 48.8 degrees S (CTD 15 and 23) where they were collected at 10, 30, and 60 m. The same standard depths were chosen for the assessment of new production. At stations between 53.7 and 64.9 degrees S (CTD 50-73, 85-122) additional samples were obtained from 90-100 m. At CTD 50, teh depth of 150 m was included, and at CTD 64, the depths of 130, 170, and 200 m were also sampled. Depths below 70 m were sampled at the occasion of collecting diatoms and particles exported from the mixed layer. Since the mean mixed layer depth was 70 m, we mainly concentrate on phytoplankton data analysis from the upper 70 m water column.
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2008-05-23 - record created by Dave Connell. 2015-09-04 - record updated by Dave Connell. Basic updates. 2021-04-09 - record updated by Dave Connell to add a link to the Biodiversity Database.

Metadata

Metadata identifier
string/ASAC_1343_phytoplankton

Language
English
Character encoding
UTF8

Author

CONNELL, DAVE J.
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
ab156448-e3ee-4792-8a66-47301c111145

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2021-04-09T11:21:43

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_1343_phytoplankton

Point of truth for the metadata record

Date info (Creation)
2008-05-21T00:00:00
Date info (Last Update)
2021-04-09

Metadata standard

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

Overviews

Spatial extent

N
S
E
W


Keywords


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