Observations on the relationship between the Antarctic coastal diatoms Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen and sea ice concentrations during the late Quaternary
The available ecological and palaeoecological information for two sea ice-related marine diatoms (Bacillariophyceae), Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen, suggests that these two species have similar sea surface temperature (SST), sea surface salinity (SSS) and...
Published in: | Marine Micropaleontology |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier Science Bv
2009
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Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/00220/33092/82663.pdf https://doi.org/10.1016/j.marmicro.2009.06.005 https://archimer.ifremer.fr/doc/00220/33092/ |
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ftarchimer:oai:archimer.ifremer.fr:33092 |
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openpolar |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
East Antarctica Quaternary diatoms sea ice |
spellingShingle |
East Antarctica Quaternary diatoms sea ice Pike, Jennifer Crosta, Xavier Maddison, Eleanor J. Stickley, Catherine E. Denis, Delphine Barbara, Loic Renssen, Hans Observations on the relationship between the Antarctic coastal diatoms Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen and sea ice concentrations during the late Quaternary |
topic_facet |
East Antarctica Quaternary diatoms sea ice |
description |
The available ecological and palaeoecological information for two sea ice-related marine diatoms (Bacillariophyceae), Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen, suggests that these two species have similar sea surface temperature (SST), sea surface salinity (SSS) and sea ice proximity preferences. From phytoplankton observations, both are described as summer or autumn bloom species, commonly found in low SST waters associated with sea ice, although rarely within the ice. Both species form resting spores (RS) as irradiance decreases, SST falls and SSS increases in response to freezing ice in autumn. Recent work analysing late Quaternary seasonally laminated diatom ooze from coastal Antarctic sites has revealed that sub-laminae dominated either by I antarctica RS, or by R glacialis RS, are nearly always deposited as the last sediment increment of the year, interpreted as representing autumn flux. In this study, we focus on sites from the East Antarctic margin and show that there is a spatial and temporal separation in whether T antarctica RS or P. glacialis RS form the autumnal sub-laminae. For instance, in deglacial sediments from the Mertz Ninnis Trough (George V Coast) P. glacialis RS form the sub-laminae whereas in similar age sediments from Iceberg Alley (Mac.Robertson Shelf) T antarctica RS dominate the autumn sub-lamina. In the Dumont d'Urville Trough (Adelie Land), mid-Holocene (Hypsithermal warm period) autumnal sub-laminae are dominated by T antarctica RS whereas late Holocene (Neoglacial cool period) sub-laminae are dominated by P. glacialis RS. These observations from late Quaternary seasonally laminated sediments would appear to indicate that P. glacialis prefers slightly cooler ocean-climate conditions than T antarctica. We test this relationship against two down-core Holocene quantitative diatom abundance records from Dumont d'Urville Trough and Svenner Channel (Princess Elizabeth Land) and compare the results with SST and sea ice concentration results of an Antarctic and Southern Ocean Holocene climate simulation that used a coupled atmosphere-sea ice-vegation model forced with orbital parameters and greenhouse gas concentrations. We find that abundance of P. glacialis RS is favoured by higher winter and spring sea ice concentrations and that a climatically-sensitive threshold exists between the abundance of P. glacialis RS and T antarctica RS in the sediments. An increase to >0.1 for the ratio of P. glacialis RS:T antarctica RS indicates a change to increased winter sea ice concentration (to >80% concentration), cooler spring seasons with increased sea ice, slightly warmer autumn seasons with less sea ice and a change from similar to 7.5 months annual sea ice cover at a site to much greater than 7.5 months. In the East Antarctic sediment record, an increase in the ratio from <0.1 to above 0.1 occurs at the transition from the warmer Hypsithermal climate into the cooler Neoglacial climate (similar to 4 cal kyr) indicating that the ratio between these two diatoms has the potential to be used as a semiquantitative climate proxy. |
format |
Article in Journal/Newspaper |
author |
Pike, Jennifer Crosta, Xavier Maddison, Eleanor J. Stickley, Catherine E. Denis, Delphine Barbara, Loic Renssen, Hans |
author_facet |
Pike, Jennifer Crosta, Xavier Maddison, Eleanor J. Stickley, Catherine E. Denis, Delphine Barbara, Loic Renssen, Hans |
author_sort |
Pike, Jennifer |
title |
Observations on the relationship between the Antarctic coastal diatoms Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen and sea ice concentrations during the late Quaternary |
title_short |
Observations on the relationship between the Antarctic coastal diatoms Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen and sea ice concentrations during the late Quaternary |
title_full |
Observations on the relationship between the Antarctic coastal diatoms Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen and sea ice concentrations during the late Quaternary |
title_fullStr |
Observations on the relationship between the Antarctic coastal diatoms Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen and sea ice concentrations during the late Quaternary |
title_full_unstemmed |
Observations on the relationship between the Antarctic coastal diatoms Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen and sea ice concentrations during the late Quaternary |
title_sort |
observations on the relationship between the antarctic coastal diatoms thalassiosira antarctica comber and porosira glacialis (grunow) jorgensen and sea ice concentrations during the late quaternary |
publisher |
Elsevier Science Bv |
publishDate |
2009 |
url |
https://archimer.ifremer.fr/doc/00220/33092/82663.pdf https://doi.org/10.1016/j.marmicro.2009.06.005 https://archimer.ifremer.fr/doc/00220/33092/ |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(136.000,136.000,-65.500,-65.500) ENVELOPE(140.013,140.013,-66.667,-66.667) ENVELOPE(147.000,147.000,-69.000,-69.000) ENVELOPE(146.000,146.000,-67.417,-67.417) ENVELOPE(80.367,80.367,-68.500,-68.500) ENVELOPE(76.833,76.833,-69.083,-69.083) ENVELOPE(76.342,76.342,-68.858,-68.858) |
geographic |
Antarctic Dumont d'Urville Dumont d'Urville Trough Dumont-d'Urville East Antarctica George V Coast Mertz-Ninnis Trough Princess Elizabeth Land Southern Ocean Svenner Svenner Channel The Antarctic |
geographic_facet |
Antarctic Dumont d'Urville Dumont d'Urville Trough Dumont-d'Urville East Antarctica George V Coast Mertz-Ninnis Trough Princess Elizabeth Land Southern Ocean Svenner Svenner Channel The Antarctic |
genre |
Adelie Land Antarc* Antarctic Antarctica East Antarctica Iceberg* Princess Elizabeth Land Sea ice Southern Ocean |
genre_facet |
Adelie Land Antarc* Antarctic Antarctica East Antarctica Iceberg* Princess Elizabeth Land Sea ice Southern Ocean |
op_source |
Marine Micropaleontology (0377-8398) (Elsevier Science Bv), 2009-10 , Vol. 73 , N. 1-2 , P. 14-25 |
op_relation |
https://archimer.ifremer.fr/doc/00220/33092/82663.pdf doi:10.1016/j.marmicro.2009.06.005 https://archimer.ifremer.fr/doc/00220/33092/ |
op_rights |
2009 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.marmicro.2009.06.005 |
container_title |
Marine Micropaleontology |
container_volume |
73 |
container_issue |
1-2 |
container_start_page |
14 |
op_container_end_page |
25 |
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1766359062303211520 |
spelling |
ftarchimer:oai:archimer.ifremer.fr:33092 2023-05-15T13:04:24+02:00 Observations on the relationship between the Antarctic coastal diatoms Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen and sea ice concentrations during the late Quaternary Pike, Jennifer Crosta, Xavier Maddison, Eleanor J. Stickley, Catherine E. Denis, Delphine Barbara, Loic Renssen, Hans 2009-10 application/pdf https://archimer.ifremer.fr/doc/00220/33092/82663.pdf https://doi.org/10.1016/j.marmicro.2009.06.005 https://archimer.ifremer.fr/doc/00220/33092/ eng eng Elsevier Science Bv https://archimer.ifremer.fr/doc/00220/33092/82663.pdf doi:10.1016/j.marmicro.2009.06.005 https://archimer.ifremer.fr/doc/00220/33092/ 2009 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use Marine Micropaleontology (0377-8398) (Elsevier Science Bv), 2009-10 , Vol. 73 , N. 1-2 , P. 14-25 East Antarctica Quaternary diatoms sea ice text Publication info:eu-repo/semantics/article 2009 ftarchimer https://doi.org/10.1016/j.marmicro.2009.06.005 2021-09-23T20:25:06Z The available ecological and palaeoecological information for two sea ice-related marine diatoms (Bacillariophyceae), Thalassiosira antarctica Comber and Porosira glacialis (Grunow) Jorgensen, suggests that these two species have similar sea surface temperature (SST), sea surface salinity (SSS) and sea ice proximity preferences. From phytoplankton observations, both are described as summer or autumn bloom species, commonly found in low SST waters associated with sea ice, although rarely within the ice. Both species form resting spores (RS) as irradiance decreases, SST falls and SSS increases in response to freezing ice in autumn. Recent work analysing late Quaternary seasonally laminated diatom ooze from coastal Antarctic sites has revealed that sub-laminae dominated either by I antarctica RS, or by R glacialis RS, are nearly always deposited as the last sediment increment of the year, interpreted as representing autumn flux. In this study, we focus on sites from the East Antarctic margin and show that there is a spatial and temporal separation in whether T antarctica RS or P. glacialis RS form the autumnal sub-laminae. For instance, in deglacial sediments from the Mertz Ninnis Trough (George V Coast) P. glacialis RS form the sub-laminae whereas in similar age sediments from Iceberg Alley (Mac.Robertson Shelf) T antarctica RS dominate the autumn sub-lamina. In the Dumont d'Urville Trough (Adelie Land), mid-Holocene (Hypsithermal warm period) autumnal sub-laminae are dominated by T antarctica RS whereas late Holocene (Neoglacial cool period) sub-laminae are dominated by P. glacialis RS. These observations from late Quaternary seasonally laminated sediments would appear to indicate that P. glacialis prefers slightly cooler ocean-climate conditions than T antarctica. We test this relationship against two down-core Holocene quantitative diatom abundance records from Dumont d'Urville Trough and Svenner Channel (Princess Elizabeth Land) and compare the results with SST and sea ice concentration results of an Antarctic and Southern Ocean Holocene climate simulation that used a coupled atmosphere-sea ice-vegation model forced with orbital parameters and greenhouse gas concentrations. We find that abundance of P. glacialis RS is favoured by higher winter and spring sea ice concentrations and that a climatically-sensitive threshold exists between the abundance of P. glacialis RS and T antarctica RS in the sediments. An increase to >0.1 for the ratio of P. glacialis RS:T antarctica RS indicates a change to increased winter sea ice concentration (to >80% concentration), cooler spring seasons with increased sea ice, slightly warmer autumn seasons with less sea ice and a change from similar to 7.5 months annual sea ice cover at a site to much greater than 7.5 months. In the East Antarctic sediment record, an increase in the ratio from <0.1 to above 0.1 occurs at the transition from the warmer Hypsithermal climate into the cooler Neoglacial climate (similar to 4 cal kyr) indicating that the ratio between these two diatoms has the potential to be used as a semiquantitative climate proxy. Article in Journal/Newspaper Adelie Land Antarc* Antarctic Antarctica East Antarctica Iceberg* Princess Elizabeth Land Sea ice Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont d'Urville Trough ENVELOPE(136.000,136.000,-65.500,-65.500) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) East Antarctica George V Coast ENVELOPE(147.000,147.000,-69.000,-69.000) Mertz-Ninnis Trough ENVELOPE(146.000,146.000,-67.417,-67.417) Princess Elizabeth Land ENVELOPE(80.367,80.367,-68.500,-68.500) Southern Ocean Svenner ENVELOPE(76.833,76.833,-69.083,-69.083) Svenner Channel ENVELOPE(76.342,76.342,-68.858,-68.858) The Antarctic Marine Micropaleontology 73 1-2 14 25 |