Diatom valve distribution and sedimentary fatty acid composition in Larsen Bay, Eastern Antarctica Peninsula
International audience During austral summer 2006–2007, five sediment cores were recovered from the Eastern Antarctic Peninsula (EAP) continental shelf. Microscopic observations and sediment fatty acid (FA) composition analyses were carried out to investigate whether the drastic changes at the sea s...
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Online Access: | https://hal.sorbonne-universite.fr/hal-02908657 https://hal.sorbonne-universite.fr/hal-02908657/document https://hal.sorbonne-universite.fr/hal-02908657/file/Sane-2011accepted.pdf https://doi.org/10.1016/j.csr.2011.04.002 |
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ftsorbonneuniv:oai:HAL:hal-02908657v1 2024-05-12T07:54:51+00:00 Diatom valve distribution and sedimentary fatty acid composition in Larsen Bay, Eastern Antarctica Peninsula Sañé, E. Isla, E. Pruski, Audrey, M Bárcena, M. A. Vétion, G. Demaster, D., J. Institute of Marine Sciences / Institut de Ciències del Mar Barcelona (ICM) Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC) Laboratoire d'Ecogéochimie des environnements benthiques (LECOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Observatoire océanologique de Banyuls (OOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Universidad de Salamanca Department of Marine, Earth, and Atmospheric Sciences NCSU (MEAS) North Carolina State University Raleigh (NC State) University of North Carolina System (UNC)-University of North Carolina System (UNC) 2011 https://hal.sorbonne-universite.fr/hal-02908657 https://hal.sorbonne-universite.fr/hal-02908657/document https://hal.sorbonne-universite.fr/hal-02908657/file/Sane-2011accepted.pdf https://doi.org/10.1016/j.csr.2011.04.002 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.csr.2011.04.002 hal-02908657 https://hal.sorbonne-universite.fr/hal-02908657 https://hal.sorbonne-universite.fr/hal-02908657/document https://hal.sorbonne-universite.fr/hal-02908657/file/Sane-2011accepted.pdf doi:10.1016/j.csr.2011.04.002 info:eu-repo/semantics/OpenAccess ISSN: 0278-4343 EISSN: 1873-6955 Continental Shelf Research https://hal.sorbonne-universite.fr/hal-02908657 Continental Shelf Research, 2011, 31 (11), pp.1161-1168. ⟨10.1016/j.csr.2011.04.002⟩ Sedimentation Larsen ice shelf Antarctica Fatty acids Diatoms [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2011 ftsorbonneuniv https://doi.org/10.1016/j.csr.2011.04.002 2024-04-18T03:40:25Z International audience During austral summer 2006–2007, five sediment cores were recovered from the Eastern Antarctic Peninsula (EAP) continental shelf. Microscopic observations and sediment fatty acid (FA) composition analyses were carried out to investigate whether the drastic changes at the sea surface in EAP may be reflected in the sedimentary record. A sharp decrease in the number of diatom valves was observed below 2 cm depth. This difference between the upper 2 cm of sediment and the deeper part of the sediment column was attributed to the drastic change in the upper water column conditions after the collapse of the ice shelves, which allowed the arrival of phytoplankton debris and fresh organic matter to the sea floor in EAP. The presence of bacterial-, zooplankton- and detrital-related FA throughout EAP cores suggests that there has been an input of older and more refractory organic matter into the region, presumably by lateral transport before the Larsen ice shelves disintegration. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf Ice Shelves Larsen Ice Shelf HAL Sorbonne Université Antarctic Antarctic Peninsula Austral Larsen Ice Shelf ENVELOPE(-62.500,-62.500,-67.500,-67.500) Larsen Bay ENVELOPE(-97.367,-97.367,59.411,59.411) Continental Shelf Research 31 11 1161 1168 |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
Sedimentation Larsen ice shelf Antarctica Fatty acids Diatoms [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
Sedimentation Larsen ice shelf Antarctica Fatty acids Diatoms [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Sañé, E. Isla, E. Pruski, Audrey, M Bárcena, M. A. Vétion, G. Demaster, D., J. Diatom valve distribution and sedimentary fatty acid composition in Larsen Bay, Eastern Antarctica Peninsula |
topic_facet |
Sedimentation Larsen ice shelf Antarctica Fatty acids Diatoms [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience During austral summer 2006–2007, five sediment cores were recovered from the Eastern Antarctic Peninsula (EAP) continental shelf. Microscopic observations and sediment fatty acid (FA) composition analyses were carried out to investigate whether the drastic changes at the sea surface in EAP may be reflected in the sedimentary record. A sharp decrease in the number of diatom valves was observed below 2 cm depth. This difference between the upper 2 cm of sediment and the deeper part of the sediment column was attributed to the drastic change in the upper water column conditions after the collapse of the ice shelves, which allowed the arrival of phytoplankton debris and fresh organic matter to the sea floor in EAP. The presence of bacterial-, zooplankton- and detrital-related FA throughout EAP cores suggests that there has been an input of older and more refractory organic matter into the region, presumably by lateral transport before the Larsen ice shelves disintegration. |
author2 |
Institute of Marine Sciences / Institut de Ciències del Mar Barcelona (ICM) Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC) Laboratoire d'Ecogéochimie des environnements benthiques (LECOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Observatoire océanologique de Banyuls (OOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Universidad de Salamanca Department of Marine, Earth, and Atmospheric Sciences NCSU (MEAS) North Carolina State University Raleigh (NC State) University of North Carolina System (UNC)-University of North Carolina System (UNC) |
format |
Article in Journal/Newspaper |
author |
Sañé, E. Isla, E. Pruski, Audrey, M Bárcena, M. A. Vétion, G. Demaster, D., J. |
author_facet |
Sañé, E. Isla, E. Pruski, Audrey, M Bárcena, M. A. Vétion, G. Demaster, D., J. |
author_sort |
Sañé, E. |
title |
Diatom valve distribution and sedimentary fatty acid composition in Larsen Bay, Eastern Antarctica Peninsula |
title_short |
Diatom valve distribution and sedimentary fatty acid composition in Larsen Bay, Eastern Antarctica Peninsula |
title_full |
Diatom valve distribution and sedimentary fatty acid composition in Larsen Bay, Eastern Antarctica Peninsula |
title_fullStr |
Diatom valve distribution and sedimentary fatty acid composition in Larsen Bay, Eastern Antarctica Peninsula |
title_full_unstemmed |
Diatom valve distribution and sedimentary fatty acid composition in Larsen Bay, Eastern Antarctica Peninsula |
title_sort |
diatom valve distribution and sedimentary fatty acid composition in larsen bay, eastern antarctica peninsula |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.sorbonne-universite.fr/hal-02908657 https://hal.sorbonne-universite.fr/hal-02908657/document https://hal.sorbonne-universite.fr/hal-02908657/file/Sane-2011accepted.pdf https://doi.org/10.1016/j.csr.2011.04.002 |
long_lat |
ENVELOPE(-62.500,-62.500,-67.500,-67.500) ENVELOPE(-97.367,-97.367,59.411,59.411) |
geographic |
Antarctic Antarctic Peninsula Austral Larsen Ice Shelf Larsen Bay |
geographic_facet |
Antarctic Antarctic Peninsula Austral Larsen Ice Shelf Larsen Bay |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf Ice Shelves Larsen Ice Shelf |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf Ice Shelves Larsen Ice Shelf |
op_source |
ISSN: 0278-4343 EISSN: 1873-6955 Continental Shelf Research https://hal.sorbonne-universite.fr/hal-02908657 Continental Shelf Research, 2011, 31 (11), pp.1161-1168. ⟨10.1016/j.csr.2011.04.002⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.csr.2011.04.002 hal-02908657 https://hal.sorbonne-universite.fr/hal-02908657 https://hal.sorbonne-universite.fr/hal-02908657/document https://hal.sorbonne-universite.fr/hal-02908657/file/Sane-2011accepted.pdf doi:10.1016/j.csr.2011.04.002 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.csr.2011.04.002 |
container_title |
Continental Shelf Research |
container_volume |
31 |
container_issue |
11 |
container_start_page |
1161 |
op_container_end_page |
1168 |
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1798852751574171648 |