Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern Ocean

This dataset was collected as part of an honours project by Jessica Wilks at Macquarie University (submitted May 2012). The samples analysed were taken from an expedition conducted by Dr Leanne Armand in 2011 as part of the KEOPS2 mission (KErguelen: compared study of the Ocean and the Plateau in Surface water). During this mission 7 locations (A3-1, A3-2, E1-3, E14W2, NPF-L, R2 and TEW) around the Kerguelen Plateau were sampled for seafloor sediment. Each attached spreadsheet represents the data from one of these locations. Three tubes of sediment were taken for each location. The data within each spreadsheet is separate for the three tubes.


After the tubes of seafloor sediment were processed to remove organic material and carbonates (leaving nothing but siliceous material, primarily diatoms) slides were made with a small amount of material, three slides per tube of sediment. Diatoms were identified using a light microscope at 40x magnification. Approximately 400 frustules were counter per tube (ie per set of 3 slides) in order to represent the diversity of the species present. The number of each species or subspecies of diatom are tallied in the spreadsheets attached. Species identifications follow Armand et al 2008.


Other information in the attached spreadsheets includes the seafloor depth at the point of sampling, the distance from the Kerguelen shoreline at the point of sampling, the amount of suspended material used on each slide, the number of field of view (at 40X) viewed to count the quota of 400 diatom frustules, and the calculated number of frustules/ gram of dry sediment weight.


Counting protocol: centric frustules were counted only when 1) more than half of the frustule was intact; and 2) the frustule was clearly identifiable. If 1) but not 2) then the frustule was counted as "unidentified centric". For Rhizosolenia spp, frustules were couned if the apex was present and identifiable, otherwise it was counted as "R. unknown". Thalassiothrix and Tricotoxon were only counted if one end was present and identifiable. The number was later divided by 2, to give the number of complete frustules.


Abbreviations:

A. spp= Actinocyclus

As. spp= Asteromphalus

Az. spp= Azpeita

Ch. spp= Chaetoceros

Co. spp= Coscinodiscus

C. spp= Cocconeis

D. spp= Dactyliosen

E. spp= Eucampia

F. spp= Fragilariopsis

O. spp= Odontella

P. spp= Paralia

Po. spp= Porosira

R. spp= Rhizosolenia

Th. spp= Thalassionema

T. spp= Thalassiosira


Locations

A3-1, Kerguelen Plateau: -50.65333 S, 72.04 E

A3-2, Kerguelen Plateau: -50.64722 S, 72.07 E

E1-3, Kerguelen Plateau: -48.11667 S, 71.96667 E

E14W2, Kerguelen Plateau: -48.7775 S, 71.43833 E

NPF-L, Kerguelen Plateau: -48.62417 S, 74.81222 E

R2, Kerguelen Plateau: -50.39389 S, 66.69944 E

TEW, Kerguelen Plateau: -49.16083 S, 69.83389 E

Simple

Identification info

Alternate title
Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern Ocean
Date (Publication)
2019-10-21
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:10.4225/15/530D1EDD19FF4

Originator

Armand, L.K. and Wilks, J.

Publisher

Australian Antarctic Data Centre

Principal investigator

ARMAND, LEANNE KAY
Australian National University
Canberra
ACT
2601
Australia

Collaborator

ARMAND, LEANNE KAY
Australian National University
Canberra
ACT
2601
Australia

Collaborator

WILKS, JESSICA
Department of Biological Sciences
Macquarie University
North Ryde
NSW
2109
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/AAS_3214

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
  • Oceans

Extent

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Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
2011-10-01 2012-03-31
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DIATOMS
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS
  • EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT COMPOSITION
Keywords
  • Diatoms
  • Kerguelen Plateau
  • Sediment
NASA/GCMD Earth Science Keywords
  • SEDIMENT CORERS
NASA/GCMD Earth Science Keywords
  • SHIPS
NASA/GCMD Earth Science Keywords
  • AMD
  • AMD/AU
  • CEOS
NASA/GCMD Earth Science Keywords
  • CONTINENT > ANTARCTICA
  • GEOGRAPHIC REGION > POLAR
  • OCEAN > SOUTHERN OCEAN
  • OCEAN > INDIAN OCEAN > KERGUELEN ISLANDS

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

Access constraints
licence
Other constraints
These data and a copy of the thesis are publicly available for download from the provided URLs.

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 provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_3214 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
2019-10-21T00:00:00

Distributor

Fees
Free
Planned available datetime
2019-10-21T00:00:00
Units of distribution
kb
Transfer size
95
Distribution format
  • Excel

Units of distribution
MB
Transfer size
12
Distribution format
  • PDF

OnLine resource
GET DATA

Download point for the data

OnLine resource
PROJECT HOME PAGE

Public information for ASAC project 3214

OnLine resource
VIEW RELATED INFORMATION > PUBLICATIONS

Download point for the thesis.

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset

Resource lineage

Statement
Some of the diatoms found on slides were not identifiable (either too small or badly degraded) and were grouped as 'unidentified centrics' or 'unidentified penates'. Most of the unidentified centrics appeared to be part of genus Thalassiosira.
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2014-02-14 - record created by Dave Connell from a template filled out by Jessica Wilks. 2017-08-29 - record updated by Dave Connell - basic updates. 2019-10-21 - record updated by Dave Connell to publicly release the data.

Metadata

Metadata identifier
string/AAS_3214

Language
English
Character encoding
UTF8

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
b09abbd9-b651-4286-b552-b157444c9157

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2019-10-21T11:16:17

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/AAS_3214

Point of truth for the metadata record

Date info (Creation)
2014-02-12T00:00:00
Date info (Last Update)
2019-10-21

Metadata standard

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

Overviews

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