The relative abundance (%) of planktonic foraminifera over time in core MD 002361, located on the shelf edge, offshore Western Australia
Maintenance and Update Frequency: notPlanned Statement: Foraminifera were identified accurately to a species level, with an average of 436 individuals picked and identified per sample. Relative species abundances are calculated as a percentage of the total count. Parameters: Age of core (yrs BP), re...
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Australian Ocean Data Network
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ftands:oai:ands.org.au::679525 2024-09-15T18:30:50+00:00 The relative abundance (%) of planktonic foraminifera over time in core MD 002361, located on the shelf edge, offshore Western Australia De Deckker, Patrick (collaborator) De Deckker, Patrick, Prof (collaborator) Department of Earth and Marine Sciences (DEMS), The Australian National University (ANU) (hasAssociationWith) Horizon Oil Ltd (hasAssociationWith) Research School of Earth Sciences (RSES), The Australian National University (ANU) (hasAssociationWith) Spooner, Michelle (hasPrincipalInvestigator) Spatial: 113.48338,-22.09163 113.48516,-22.09177 113.48469,-22.09283 113.48360,-22.09270 113.48338,-22.09163 Spatial: westlimit=113; southlimit=-22.5; eastlimit=113.5; northlimit=-22 Spatial: uplimit=2034; downlimit=2034 Temporal: From 2000-01-01 to 2000-01-01 https://researchdata.edu.au/the-relative-abundance-western-australia/679525 unknown Australian Ocean Data Network https://researchdata.edu.au/the-relative-abundance-western-australia/679525 2fb543b0-07f6-11dc-92a7-00188b4c0af8 Horizon Oil Ltd Research School of Earth Sciences (RSES), The Australian National University (ANU) biota POPULATION DYNAMICS EARTH SCIENCE BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS FORAMINIFERS BIOLOGICAL CLASSIFICATION PROTISTS AMOEBOIDS age_of_core taxonomic_group_count dataset ftands 2024-08-06T01:58:59Z Maintenance and Update Frequency: notPlanned Statement: Foraminifera were identified accurately to a species level, with an average of 436 individuals picked and identified per sample. Relative species abundances are calculated as a percentage of the total count. Parameters: Age of core (yrs BP), relative abundance of planktonic foraminifera assemblages (%). Statement: Counts of planktonic foraminifera were made on splits of the >150µm fractions to provide a base level for ecological counts, removing small juvenile and possibly unidentifiable foraminifera. Each sample was split by an Otto-micro splitter until ~400 species were present in the final split. Credit The Australian National University (ANU) Credit Funded by The National Oceans Office (NOO) Credit Funded by The French Polar Institute Credit Funded by The Australian Research Council (ARC) Credit Funded by The Australian Institute of Nuclear Science Engineering (AINSE) Credit Funded by The Murray Darling Basin Commission Purpose To reconstruct the faunal assemblages of planktonic foraminifera through time and to give insight into the palaeoceanography of the core location. The advent of deep-sea drilling in the 1950's prompted the use of planktonic foraminifera (unicellular protozans) as palaeoceanographic indicators. They provide a natural archive of past environmental changes due to their global distribution, their prolific productivity and sensitivity to environmental variations. The most abundant species within core MD002361 is the subtropical species Gs. ruber. High abundances =30% are seen during the interglacial periods Marine Isotope Stages (MIS) 11, 9, 7, 5 with peak abundance (37.7%) during the Holocene. Other tropical and subtropical species follow this pattern. The transitional, deep dwelling species Gr. inflata has the most distinct abundance change within core MD002361. This species is absent during the interglacial periods but achieves high relative abundances (~20-30%) during glacial periods. Dataset Planktonic foraminifera Research Data Australia (Australian National Data Service - ANDS) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota POPULATION DYNAMICS EARTH SCIENCE BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS FORAMINIFERS BIOLOGICAL CLASSIFICATION PROTISTS AMOEBOIDS age_of_core taxonomic_group_count |
spellingShingle |
biota POPULATION DYNAMICS EARTH SCIENCE BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS FORAMINIFERS BIOLOGICAL CLASSIFICATION PROTISTS AMOEBOIDS age_of_core taxonomic_group_count The relative abundance (%) of planktonic foraminifera over time in core MD 002361, located on the shelf edge, offshore Western Australia |
topic_facet |
biota POPULATION DYNAMICS EARTH SCIENCE BIOSPHERE ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS FORAMINIFERS BIOLOGICAL CLASSIFICATION PROTISTS AMOEBOIDS age_of_core taxonomic_group_count |
description |
Maintenance and Update Frequency: notPlanned Statement: Foraminifera were identified accurately to a species level, with an average of 436 individuals picked and identified per sample. Relative species abundances are calculated as a percentage of the total count. Parameters: Age of core (yrs BP), relative abundance of planktonic foraminifera assemblages (%). Statement: Counts of planktonic foraminifera were made on splits of the >150µm fractions to provide a base level for ecological counts, removing small juvenile and possibly unidentifiable foraminifera. Each sample was split by an Otto-micro splitter until ~400 species were present in the final split. Credit The Australian National University (ANU) Credit Funded by The National Oceans Office (NOO) Credit Funded by The French Polar Institute Credit Funded by The Australian Research Council (ARC) Credit Funded by The Australian Institute of Nuclear Science Engineering (AINSE) Credit Funded by The Murray Darling Basin Commission Purpose To reconstruct the faunal assemblages of planktonic foraminifera through time and to give insight into the palaeoceanography of the core location. The advent of deep-sea drilling in the 1950's prompted the use of planktonic foraminifera (unicellular protozans) as palaeoceanographic indicators. They provide a natural archive of past environmental changes due to their global distribution, their prolific productivity and sensitivity to environmental variations. The most abundant species within core MD002361 is the subtropical species Gs. ruber. High abundances =30% are seen during the interglacial periods Marine Isotope Stages (MIS) 11, 9, 7, 5 with peak abundance (37.7%) during the Holocene. Other tropical and subtropical species follow this pattern. The transitional, deep dwelling species Gr. inflata has the most distinct abundance change within core MD002361. This species is absent during the interglacial periods but achieves high relative abundances (~20-30%) during glacial periods. |
author2 |
De Deckker, Patrick (collaborator) De Deckker, Patrick, Prof (collaborator) Department of Earth and Marine Sciences (DEMS), The Australian National University (ANU) (hasAssociationWith) Horizon Oil Ltd (hasAssociationWith) Research School of Earth Sciences (RSES), The Australian National University (ANU) (hasAssociationWith) Spooner, Michelle (hasPrincipalInvestigator) |
format |
Dataset |
title |
The relative abundance (%) of planktonic foraminifera over time in core MD 002361, located on the shelf edge, offshore Western Australia |
title_short |
The relative abundance (%) of planktonic foraminifera over time in core MD 002361, located on the shelf edge, offshore Western Australia |
title_full |
The relative abundance (%) of planktonic foraminifera over time in core MD 002361, located on the shelf edge, offshore Western Australia |
title_fullStr |
The relative abundance (%) of planktonic foraminifera over time in core MD 002361, located on the shelf edge, offshore Western Australia |
title_full_unstemmed |
The relative abundance (%) of planktonic foraminifera over time in core MD 002361, located on the shelf edge, offshore Western Australia |
title_sort |
relative abundance (%) of planktonic foraminifera over time in core md 002361, located on the shelf edge, offshore western australia |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/the-relative-abundance-western-australia/679525 |
op_coverage |
Spatial: 113.48338,-22.09163 113.48516,-22.09177 113.48469,-22.09283 113.48360,-22.09270 113.48338,-22.09163 Spatial: westlimit=113; southlimit=-22.5; eastlimit=113.5; northlimit=-22 Spatial: uplimit=2034; downlimit=2034 Temporal: From 2000-01-01 to 2000-01-01 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Horizon Oil Ltd Research School of Earth Sciences (RSES), The Australian National University (ANU) |
op_relation |
https://researchdata.edu.au/the-relative-abundance-western-australia/679525 2fb543b0-07f6-11dc-92a7-00188b4c0af8 |
_version_ |
1810472349803216896 |