Diatom species and biogenic particle fluxes in the Australian sector of the southern Antarctic Zone
Progress Code: completed Statement: Some large and/or entangled frustules of some large diatom taxa, such as Thalassiothrix, could have been be retained in the 1 mm screen mesh, and therefore, underrepresented in this study. Diatom and biogenic particle fluxes were investigated over a one-year perio...
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ftands:oai:ands.org.au::2819253 2024-09-15T17:46:18+00:00 Diatom species and biogenic particle fluxes in the Australian sector of the southern Antarctic Zone AADC (owner) AADC, DATA OFFICER (distributor) AADC, DATA OFFICER (custodian) ARMAND, LEANNE KAY (collaborator) ARMAND, LEANNE KAY (hasPrincipalInvestigator) AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith) Australian Antarctic Data Centre (publisher) Australian Antarctic Division (sponsor) BALLEGEER, ANNE-MARIE (collaborator) BALLEGEER, ANNE-MARIE (hasPrincipalInvestigator) BRAY, STEPHEN GILBERT (collaborator) BRAY, STEPHEN GILBERT (hasPrincipalInvestigator) CONNELL, DAVE J. (author) RIGUAL-HERNANDEZ, ANDRES S. (collaborator) RIGUAL-HERNANDEZ, ANDRES S. (hasPrincipalInvestigator) Rigual-Hernandez, A.S., Armand, L.K., Trull, T.W., Bray, S.G., Ballegeer, A. (originator) TRULL, THOMAS WILLIAM (collaborator) TRULL, THOMAS WILLIAM (hasPrincipalInvestigator) Spatial: westlimit=139.89; southlimit=-61.75; eastlimit=139.9; northlimit=-61.74 Temporal: From 2001-11-30 to 2002-09-29 https://researchdata.edu.au/diatom-species-biogenic-antarctic-zone/2819253 unknown Australian Ocean Data Network https://researchdata.edu.au/diatom-species-biogenic-antarctic-zone/2819253 AAS_4078_diatoms_biogenic_flux AU/AADC > Australian Antarctic Data Centre, Australia biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DIATOMS PROTISTS > OCEANS > MARINE SEDIMENTS > BIOGENIC SEDIMENTS Biogenic Particle Flux SHIPS R/V AA > R/V Aurora Australis AMD AMD/AU CEOS ACE/CRC CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR dataset ftands 2024-08-06T01:58:58Z Progress Code: completed Statement: Some large and/or entangled frustules of some large diatom taxa, such as Thalassiothrix, could have been be retained in the 1 mm screen mesh, and therefore, underrepresented in this study. Diatom and biogenic particle fluxes were investigated over a one-year period (2001-02) at the southern Antarctic Zone in the Australian Sector of the Southern Ocean. Two vertically moored sediment traps were deployed at 60 degrees 44.43'S 139 degrees 53.97' E at 2000 and 3800 m below sea-level. In these data sets we present the results on the temporal and vertical variability of total diatom flux, species composition and biogenic particle fluxes during a year. A detailed description of the field experiment, sample processing and counting methods can be found in Rigual-Hernandez et al. (2015). Total fluxes of particulates at both traps were highly seasonal, with maxima registered during the austral summer (up to 1151 mg m-2 d-1 at 2000 m and 1157 mg m-2 d-1 at 3700 m) and almost negligible fluxes during winter (up to 42 mg m-2 d-1 at 2000 m and below detection limits at 3700 m). Particulate fluxes were slightly higher at 2000 m than at 3700 m (deployment average = 261 and 216 mg m-2 d-1, respectively). Biogenic silica (SiO2) was the dominant bulk component, regardless of the sampling period or depth (deployment average = 76% at 2000 and 78% at 3700 m). Highest relative contribution of opal was registered from the end of summer through early-autumn at both depths. Secondary contributors were carbonate (CaCO3) (7% at 2000 m and 9% at 3700 m) and particulate organic carbon (POC) (1.4% at 2000 m and 1.2% at 3700 m). The relative concentration of carbonate and POC was at its highest in austral spring and summer. Diatom frustules from 61 taxa were identified over the entire experiment. The dominant species of the diatom assemblage was Fragilariopsis kerguelensis with a mean flux between 53 x 106 and 60 x 106 valves m-2 day-1 at 2000 m (annualized mean and deployment average, respectively). ... Dataset Antarc* Antarctic Antarctica aurora australis Southern Ocean 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 oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DIATOMS PROTISTS > OCEANS > MARINE SEDIMENTS > BIOGENIC SEDIMENTS Biogenic Particle Flux SHIPS R/V AA > R/V Aurora Australis AMD AMD/AU CEOS ACE/CRC CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DIATOMS PROTISTS > OCEANS > MARINE SEDIMENTS > BIOGENIC SEDIMENTS Biogenic Particle Flux SHIPS R/V AA > R/V Aurora Australis AMD AMD/AU CEOS ACE/CRC CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR Diatom species and biogenic particle fluxes in the Australian sector of the southern Antarctic Zone |
topic_facet |
biota oceans EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DIATOMS PROTISTS > OCEANS > MARINE SEDIMENTS > BIOGENIC SEDIMENTS Biogenic Particle Flux SHIPS R/V AA > R/V Aurora Australis AMD AMD/AU CEOS ACE/CRC CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR |
description |
Progress Code: completed Statement: Some large and/or entangled frustules of some large diatom taxa, such as Thalassiothrix, could have been be retained in the 1 mm screen mesh, and therefore, underrepresented in this study. Diatom and biogenic particle fluxes were investigated over a one-year period (2001-02) at the southern Antarctic Zone in the Australian Sector of the Southern Ocean. Two vertically moored sediment traps were deployed at 60 degrees 44.43'S 139 degrees 53.97' E at 2000 and 3800 m below sea-level. In these data sets we present the results on the temporal and vertical variability of total diatom flux, species composition and biogenic particle fluxes during a year. A detailed description of the field experiment, sample processing and counting methods can be found in Rigual-Hernandez et al. (2015). Total fluxes of particulates at both traps were highly seasonal, with maxima registered during the austral summer (up to 1151 mg m-2 d-1 at 2000 m and 1157 mg m-2 d-1 at 3700 m) and almost negligible fluxes during winter (up to 42 mg m-2 d-1 at 2000 m and below detection limits at 3700 m). Particulate fluxes were slightly higher at 2000 m than at 3700 m (deployment average = 261 and 216 mg m-2 d-1, respectively). Biogenic silica (SiO2) was the dominant bulk component, regardless of the sampling period or depth (deployment average = 76% at 2000 and 78% at 3700 m). Highest relative contribution of opal was registered from the end of summer through early-autumn at both depths. Secondary contributors were carbonate (CaCO3) (7% at 2000 m and 9% at 3700 m) and particulate organic carbon (POC) (1.4% at 2000 m and 1.2% at 3700 m). The relative concentration of carbonate and POC was at its highest in austral spring and summer. Diatom frustules from 61 taxa were identified over the entire experiment. The dominant species of the diatom assemblage was Fragilariopsis kerguelensis with a mean flux between 53 x 106 and 60 x 106 valves m-2 day-1 at 2000 m (annualized mean and deployment average, respectively). ... |
author2 |
AADC (owner) AADC, DATA OFFICER (distributor) AADC, DATA OFFICER (custodian) ARMAND, LEANNE KAY (collaborator) ARMAND, LEANNE KAY (hasPrincipalInvestigator) AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith) Australian Antarctic Data Centre (publisher) Australian Antarctic Division (sponsor) BALLEGEER, ANNE-MARIE (collaborator) BALLEGEER, ANNE-MARIE (hasPrincipalInvestigator) BRAY, STEPHEN GILBERT (collaborator) BRAY, STEPHEN GILBERT (hasPrincipalInvestigator) CONNELL, DAVE J. (author) RIGUAL-HERNANDEZ, ANDRES S. (collaborator) RIGUAL-HERNANDEZ, ANDRES S. (hasPrincipalInvestigator) Rigual-Hernandez, A.S., Armand, L.K., Trull, T.W., Bray, S.G., Ballegeer, A. (originator) TRULL, THOMAS WILLIAM (collaborator) TRULL, THOMAS WILLIAM (hasPrincipalInvestigator) |
format |
Dataset |
title |
Diatom species and biogenic particle fluxes in the Australian sector of the southern Antarctic Zone |
title_short |
Diatom species and biogenic particle fluxes in the Australian sector of the southern Antarctic Zone |
title_full |
Diatom species and biogenic particle fluxes in the Australian sector of the southern Antarctic Zone |
title_fullStr |
Diatom species and biogenic particle fluxes in the Australian sector of the southern Antarctic Zone |
title_full_unstemmed |
Diatom species and biogenic particle fluxes in the Australian sector of the southern Antarctic Zone |
title_sort |
diatom species and biogenic particle fluxes in the australian sector of the southern antarctic zone |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/diatom-species-biogenic-antarctic-zone/2819253 |
op_coverage |
Spatial: westlimit=139.89; southlimit=-61.75; eastlimit=139.9; northlimit=-61.74 Temporal: From 2001-11-30 to 2002-09-29 |
genre |
Antarc* Antarctic Antarctica aurora australis Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica aurora australis Southern Ocean |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/diatom-species-biogenic-antarctic-zone/2819253 AAS_4078_diatoms_biogenic_flux |
_version_ |
1810494305432764416 |