Planktonic foraminiferal depth habitat and δ18O calibrations : plankton tow results from the Atlantic sector of the Southern Ocean
Plankton tows conducted in the Atlantic sector of the Southern Ocean allow analysis of the influence of water column structure on planktonic foraminiferal abundance and δ18O composition. Foraminiferal abundance varies by several orders of magnitude across a large gradient in sea surface temperature...
Published in: | Paleoceanography |
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Language: | English |
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2003
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Online Access: | https://ddd.uab.cat/record/25438 |
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ftuabarcelonapb:oai:ddd.uab.cat:25438 2024-09-15T18:19:31+00:00 Planktonic foraminiferal depth habitat and δ18O calibrations : plankton tow results from the Atlantic sector of the Southern Ocean Mortyn, P. Graham Charles, Christopher D. 2003 application/pdf https://ddd.uab.cat/record/25438 eng eng Paleoceanography Vol. 18, Issue 2 (June 2003), p. 1037 https://ddd.uab.cat/record/25438 urn:10.1029/2001PA000637 urn:oai:ddd.uab.cat:25438 urn:recercauab:ARE-28239 urn:articleid:19449186v18n2p1037 urn:wos_id:000183180700001 urn:oai:egreta.uab.cat:publications/1e540aea-6f71-464a-8851-b40591db264a urn:scopus_id:0142186014 open access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/ Micropaleontology Upper ocean and mixed layer processes Stable isotopes Paleoceanography Article 2003 ftuabarcelonapb 2024-09-04T06:59:19Z Plankton tows conducted in the Atlantic sector of the Southern Ocean allow analysis of the influence of water column structure on planktonic foraminiferal abundance and δ18O composition. Foraminiferal abundance varies by several orders of magnitude across a large gradient in sea surface temperature and other hydrographic features, demonstrating high sensitivity of foraminiferal populations to regional differences in water properties. The depth of maximum abundance for key species such as Globigerina bulloides and Neogloboquadrina pachyderma is not constant from station to station. The pattern suggests that their abundance and shell chemistry are tied to density horizons or other conditions (such as food availability) that become more sharply defined with depth in the northern subantarctic. The consistent observation of Globorotalia inflata and Globoratalia truncatulinoides as relatively deep-dwelling species confirms their utility as indicators of upper thermocline properties. In δ18O all species are observed to be isotopically lighter than predicted from water properties, but the species-specific offset is fairly uniform at all stations. These observations define the utility of multispecies δ18O for reconstructing temperature and density stratification from past surface oceans. Article in Journal/Newspaper Neogloboquadrina pachyderma Southern Ocean Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB Paleoceanography 18 2 n/a n/a |
institution |
Open Polar |
collection |
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
op_collection_id |
ftuabarcelonapb |
language |
English |
topic |
Micropaleontology Upper ocean and mixed layer processes Stable isotopes Paleoceanography |
spellingShingle |
Micropaleontology Upper ocean and mixed layer processes Stable isotopes Paleoceanography Mortyn, P. Graham Charles, Christopher D. Planktonic foraminiferal depth habitat and δ18O calibrations : plankton tow results from the Atlantic sector of the Southern Ocean |
topic_facet |
Micropaleontology Upper ocean and mixed layer processes Stable isotopes Paleoceanography |
description |
Plankton tows conducted in the Atlantic sector of the Southern Ocean allow analysis of the influence of water column structure on planktonic foraminiferal abundance and δ18O composition. Foraminiferal abundance varies by several orders of magnitude across a large gradient in sea surface temperature and other hydrographic features, demonstrating high sensitivity of foraminiferal populations to regional differences in water properties. The depth of maximum abundance for key species such as Globigerina bulloides and Neogloboquadrina pachyderma is not constant from station to station. The pattern suggests that their abundance and shell chemistry are tied to density horizons or other conditions (such as food availability) that become more sharply defined with depth in the northern subantarctic. The consistent observation of Globorotalia inflata and Globoratalia truncatulinoides as relatively deep-dwelling species confirms their utility as indicators of upper thermocline properties. In δ18O all species are observed to be isotopically lighter than predicted from water properties, but the species-specific offset is fairly uniform at all stations. These observations define the utility of multispecies δ18O for reconstructing temperature and density stratification from past surface oceans. |
format |
Article in Journal/Newspaper |
author |
Mortyn, P. Graham Charles, Christopher D. |
author_facet |
Mortyn, P. Graham Charles, Christopher D. |
author_sort |
Mortyn, P. Graham |
title |
Planktonic foraminiferal depth habitat and δ18O calibrations : plankton tow results from the Atlantic sector of the Southern Ocean |
title_short |
Planktonic foraminiferal depth habitat and δ18O calibrations : plankton tow results from the Atlantic sector of the Southern Ocean |
title_full |
Planktonic foraminiferal depth habitat and δ18O calibrations : plankton tow results from the Atlantic sector of the Southern Ocean |
title_fullStr |
Planktonic foraminiferal depth habitat and δ18O calibrations : plankton tow results from the Atlantic sector of the Southern Ocean |
title_full_unstemmed |
Planktonic foraminiferal depth habitat and δ18O calibrations : plankton tow results from the Atlantic sector of the Southern Ocean |
title_sort |
planktonic foraminiferal depth habitat and î´18o calibrations : plankton tow results from the atlantic sector of the southern ocean |
publishDate |
2003 |
url |
https://ddd.uab.cat/record/25438 |
genre |
Neogloboquadrina pachyderma Southern Ocean |
genre_facet |
Neogloboquadrina pachyderma Southern Ocean |
op_relation |
Paleoceanography Vol. 18, Issue 2 (June 2003), p. 1037 https://ddd.uab.cat/record/25438 urn:10.1029/2001PA000637 urn:oai:ddd.uab.cat:25438 urn:recercauab:ARE-28239 urn:articleid:19449186v18n2p1037 urn:wos_id:000183180700001 urn:oai:egreta.uab.cat:publications/1e540aea-6f71-464a-8851-b40591db264a urn:scopus_id:0142186014 |
op_rights |
open access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/ |
container_title |
Paleoceanography |
container_volume |
18 |
container_issue |
2 |
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n/a |
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_version_ |
1810457865294446592 |