Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern Ocean
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. This dataset was collected as part o...
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Australian Ocean Data Network
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Online Access: | https://researchdata.ands.org.au/diatom-identification-counts-southern-ocean/686926 https://data.aad.gov.au/metadata/records/AAS_3214 http://data.aad.gov.au/eds/3785/download https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=3214 http://data.aad.gov.au/eds/3786/download http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_3214 |
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ftands:oai:ands.org.au::686926 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans DIATOMS EARTH SCIENCE BIOLOGICAL CLASSIFICATION PLANTS MICROALGAE SEDIMENT COMPOSITION MARINE SEDIMENTS Kerguelen Plateau Sediment SEDIMENT CORERS SHIPS AMD AMD/AU CEOS CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN INDIAN OCEAN > KERGUELEN ISLANDS |
spellingShingle |
biota oceans DIATOMS EARTH SCIENCE BIOLOGICAL CLASSIFICATION PLANTS MICROALGAE SEDIMENT COMPOSITION MARINE SEDIMENTS Kerguelen Plateau Sediment SEDIMENT CORERS SHIPS AMD AMD/AU CEOS CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN INDIAN OCEAN > KERGUELEN ISLANDS Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern Ocean |
topic_facet |
biota oceans DIATOMS EARTH SCIENCE BIOLOGICAL CLASSIFICATION PLANTS MICROALGAE SEDIMENT COMPOSITION MARINE SEDIMENTS Kerguelen Plateau Sediment SEDIMENT CORERS SHIPS AMD AMD/AU CEOS CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN INDIAN OCEAN > KERGUELEN ISLANDS |
description |
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. 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 |
author2 |
AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) |
format |
Dataset |
title |
Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern Ocean |
title_short |
Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern Ocean |
title_full |
Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern Ocean |
title_fullStr |
Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern Ocean |
title_full_unstemmed |
Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern Ocean |
title_sort |
diatom identification and counts from 7 multicore locations on kerguelen plateau, southern ocean |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.ands.org.au/diatom-identification-counts-southern-ocean/686926 https://data.aad.gov.au/metadata/records/AAS_3214 http://data.aad.gov.au/eds/3785/download https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=3214 http://data.aad.gov.au/eds/3786/download http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_3214 |
op_coverage |
Spatial: northlimit=-50.65333; southlimit=-50.65333; westlimit=72.04; eastLimit=72.04 Spatial: northlimit=-50.64722; southlimit=-50.64722; westlimit=72.07; eastLimit=72.07 Spatial: northlimit=-48.11667; southlimit=-48.11667; westlimit=71.96667; eastLimit=71.96667 Spatial: northlimit=-48.7775; southlimit=-48.7775; westlimit=71.43833; eastLimit=71.43833 Spatial: northlimit=-48.62417; southlimit=-48.62417; westlimit=74.81222; eastLimit=74.81222 Spatial: northlimit=-50.39389; southlimit=-50.39389; westlimit=66.69944; eastLimit=66.69944 Spatial: northlimit=-49.16083; southlimit=-49.16083; westlimit=69.83389; eastLimit=69.83389 Temporal: From 2011-10-01 to 2012-03-31 |
long_lat |
ENVELOPE(72.04,72.04,-50.65333,-50.65333) ENVELOPE(72.07,72.07,-50.64722,-50.64722) ENVELOPE(71.96667,71.96667,-48.11667,-48.11667) ENVELOPE(71.43833,71.43833,-48.7775,-48.7775) ENVELOPE(74.81222,74.81222,-48.62417,-48.62417) ENVELOPE(66.69944,66.69944,-50.39389,-50.39389) ENVELOPE(69.83389,69.83389,-49.16083,-49.16083) |
geographic |
Indian Kerguelen Kerguelen Islands Southern Ocean |
geographic_facet |
Indian Kerguelen Kerguelen Islands Southern Ocean |
genre |
Antarc* Antarctica Kerguelen Islands Southern Ocean |
genre_facet |
Antarc* Antarctica Kerguelen Islands Southern Ocean |
op_source |
https://data.aad.gov.au |
op_relation |
https://researchdata.ands.org.au/diatom-identification-counts-southern-ocean/686926 b09abbd9-b651-4286-b552-b157444c9157 https://data.aad.gov.au/metadata/records/AAS_3214 http://data.aad.gov.au/eds/3785/download https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=3214 http://data.aad.gov.au/eds/3786/download http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_3214 |
_version_ |
1766245717538504704 |
spelling |
ftands:oai:ands.org.au::686926 2023-05-15T13:46:56+02:00 Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern Ocean AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) Spatial: northlimit=-50.65333; southlimit=-50.65333; westlimit=72.04; eastLimit=72.04 Spatial: northlimit=-50.64722; southlimit=-50.64722; westlimit=72.07; eastLimit=72.07 Spatial: northlimit=-48.11667; southlimit=-48.11667; westlimit=71.96667; eastLimit=71.96667 Spatial: northlimit=-48.7775; southlimit=-48.7775; westlimit=71.43833; eastLimit=71.43833 Spatial: northlimit=-48.62417; southlimit=-48.62417; westlimit=74.81222; eastLimit=74.81222 Spatial: northlimit=-50.39389; southlimit=-50.39389; westlimit=66.69944; eastLimit=66.69944 Spatial: northlimit=-49.16083; southlimit=-49.16083; westlimit=69.83389; eastLimit=69.83389 Temporal: From 2011-10-01 to 2012-03-31 https://researchdata.ands.org.au/diatom-identification-counts-southern-ocean/686926 https://data.aad.gov.au/metadata/records/AAS_3214 http://data.aad.gov.au/eds/3785/download https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=3214 http://data.aad.gov.au/eds/3786/download http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_3214 unknown Australian Ocean Data Network https://researchdata.ands.org.au/diatom-identification-counts-southern-ocean/686926 b09abbd9-b651-4286-b552-b157444c9157 https://data.aad.gov.au/metadata/records/AAS_3214 http://data.aad.gov.au/eds/3785/download https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=3214 http://data.aad.gov.au/eds/3786/download http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_3214 https://data.aad.gov.au biota oceans DIATOMS EARTH SCIENCE BIOLOGICAL CLASSIFICATION PLANTS MICROALGAE SEDIMENT COMPOSITION MARINE SEDIMENTS Kerguelen Plateau Sediment SEDIMENT CORERS SHIPS AMD AMD/AU CEOS CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN INDIAN OCEAN > KERGUELEN ISLANDS dataset ftands 2020-01-05T21:08:05Z 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. 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 Dataset Antarc* Antarctica Kerguelen Islands Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Indian Kerguelen Kerguelen Islands Southern Ocean ENVELOPE(72.04,72.04,-50.65333,-50.65333) ENVELOPE(72.07,72.07,-50.64722,-50.64722) ENVELOPE(71.96667,71.96667,-48.11667,-48.11667) ENVELOPE(71.43833,71.43833,-48.7775,-48.7775) ENVELOPE(74.81222,74.81222,-48.62417,-48.62417) ENVELOPE(66.69944,66.69944,-50.39389,-50.39389) ENVELOPE(69.83389,69.83389,-49.16083,-49.16083) |