Ontogenetic effects on stable carbon and oxygen isotopes in tests of live (Rose Bengal stained) benthic foraminifera from the Pakistan continental margin
International audience We determined the stable oxygen and carbon isotopic composition of live (Rose Bengal stained) tests belonging to different size classes of two benthic foraminiferal species from the Pakistan continental margin. Samples were taken at two sites, with water depths of about 135 an...
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ftunivnantes:oai:HAL:hal-03278092v1 2024-05-19T07:47:30+00:00 Ontogenetic effects on stable carbon and oxygen isotopes in tests of live (Rose Bengal stained) benthic foraminifera from the Pakistan continental margin Schumacher, Stefanie Jorissen, Frans Mackensen, Andreas Gooday, Andrew Pays, Olivier Laboratoire de Planétologie et Géodynamique de Nantes UMR 6112 (LPGN) Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association National Oceanography Centre Southampton (NOC) University of Southampton Littoral, Environnement, Télédétection, Géomatique (LETG-Angers) Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Université d'Angers (UA)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN) Université de Nantes (UN)-Université de Nantes (UN)-Université de Caen Normandie (UNICAEN) Université de Nantes (UN)-Université de Nantes (UN) 2010 https://univ-angers.hal.science/hal-03278092 https://doi.org/10.1016/j.marmicro.2010.06.002 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marmicro.2010.06.002 hal-03278092 https://univ-angers.hal.science/hal-03278092 doi:10.1016/j.marmicro.2010.06.002 OKINA: ua3902 ISSN: 0377-8398 Marine Micropaleontology https://univ-angers.hal.science/hal-03278092 Marine Micropaleontology, 2010, 76 (3–4), pp.92 - 103. ⟨10.1016/j.marmicro.2010.06.002⟩ Arabian Sea Live benthic foraminifera Ontogenetic effect Oxygen and carbon stable isotopes Oxygen minimum zone Test size [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2010 ftunivnantes https://doi.org/10.1016/j.marmicro.2010.06.002 2024-04-25T00:33:32Z International audience We determined the stable oxygen and carbon isotopic composition of live (Rose Bengal stained) tests belonging to different size classes of two benthic foraminiferal species from the Pakistan continental margin. Samples were taken at two sites, with water depths of about 135 and 275 m, corresponding to the upper boundary and upper part of the core region of the oxygen minimum zone (OMZ). For Uvigerina ex gr. Uvigerina semiornata and Bolivina aff. Bolivina dilatata, δ13C and δ18O values increased significantly with increasing test size. In the case of Uvigerina ex gr. U. semiornata, δ13C increased linearly by about 0.105‰ for each 100-μm increment in test size, whereas δ18O increased by 0.02 to 0.06‰ per 100 μm increment. For Bolivina aff. B. dilatata the relationship between test size and stable isotopic composition is better described by logarithmic equations. A strong positive linear correlation is observed between δ18O and δ13C values of both taxa, with a constant ratio of δ18O and δ13C values close to 2:1. This suggests that the strong ontogenetic effect is mainly caused by kinetic isotope fractionation during CO2 uptake. Our data underline the necessity to base longer δ18O and δ13C isotope records derived from benthic foraminifera on size windows of 100 μm or less. This is already common practice in down-core isotopic studies of planktonic foraminifera. Article in Journal/Newspaper Planktonic foraminifera Université de Nantes: HAL-UNIV-NANTES Marine Micropaleontology 76 3-4 92 103 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Arabian Sea Live benthic foraminifera Ontogenetic effect Oxygen and carbon stable isotopes Oxygen minimum zone Test size [SDU]Sciences of the Universe [physics] |
spellingShingle |
Arabian Sea Live benthic foraminifera Ontogenetic effect Oxygen and carbon stable isotopes Oxygen minimum zone Test size [SDU]Sciences of the Universe [physics] Schumacher, Stefanie Jorissen, Frans Mackensen, Andreas Gooday, Andrew Pays, Olivier Ontogenetic effects on stable carbon and oxygen isotopes in tests of live (Rose Bengal stained) benthic foraminifera from the Pakistan continental margin |
topic_facet |
Arabian Sea Live benthic foraminifera Ontogenetic effect Oxygen and carbon stable isotopes Oxygen minimum zone Test size [SDU]Sciences of the Universe [physics] |
description |
International audience We determined the stable oxygen and carbon isotopic composition of live (Rose Bengal stained) tests belonging to different size classes of two benthic foraminiferal species from the Pakistan continental margin. Samples were taken at two sites, with water depths of about 135 and 275 m, corresponding to the upper boundary and upper part of the core region of the oxygen minimum zone (OMZ). For Uvigerina ex gr. Uvigerina semiornata and Bolivina aff. Bolivina dilatata, δ13C and δ18O values increased significantly with increasing test size. In the case of Uvigerina ex gr. U. semiornata, δ13C increased linearly by about 0.105‰ for each 100-μm increment in test size, whereas δ18O increased by 0.02 to 0.06‰ per 100 μm increment. For Bolivina aff. B. dilatata the relationship between test size and stable isotopic composition is better described by logarithmic equations. A strong positive linear correlation is observed between δ18O and δ13C values of both taxa, with a constant ratio of δ18O and δ13C values close to 2:1. This suggests that the strong ontogenetic effect is mainly caused by kinetic isotope fractionation during CO2 uptake. Our data underline the necessity to base longer δ18O and δ13C isotope records derived from benthic foraminifera on size windows of 100 μm or less. This is already common practice in down-core isotopic studies of planktonic foraminifera. |
author2 |
Laboratoire de Planétologie et Géodynamique de Nantes UMR 6112 (LPGN) Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association National Oceanography Centre Southampton (NOC) University of Southampton Littoral, Environnement, Télédétection, Géomatique (LETG-Angers) Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Université d'Angers (UA)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN) Université de Nantes (UN)-Université de Nantes (UN)-Université de Caen Normandie (UNICAEN) Université de Nantes (UN)-Université de Nantes (UN) |
format |
Article in Journal/Newspaper |
author |
Schumacher, Stefanie Jorissen, Frans Mackensen, Andreas Gooday, Andrew Pays, Olivier |
author_facet |
Schumacher, Stefanie Jorissen, Frans Mackensen, Andreas Gooday, Andrew Pays, Olivier |
author_sort |
Schumacher, Stefanie |
title |
Ontogenetic effects on stable carbon and oxygen isotopes in tests of live (Rose Bengal stained) benthic foraminifera from the Pakistan continental margin |
title_short |
Ontogenetic effects on stable carbon and oxygen isotopes in tests of live (Rose Bengal stained) benthic foraminifera from the Pakistan continental margin |
title_full |
Ontogenetic effects on stable carbon and oxygen isotopes in tests of live (Rose Bengal stained) benthic foraminifera from the Pakistan continental margin |
title_fullStr |
Ontogenetic effects on stable carbon and oxygen isotopes in tests of live (Rose Bengal stained) benthic foraminifera from the Pakistan continental margin |
title_full_unstemmed |
Ontogenetic effects on stable carbon and oxygen isotopes in tests of live (Rose Bengal stained) benthic foraminifera from the Pakistan continental margin |
title_sort |
ontogenetic effects on stable carbon and oxygen isotopes in tests of live (rose bengal stained) benthic foraminifera from the pakistan continental margin |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://univ-angers.hal.science/hal-03278092 https://doi.org/10.1016/j.marmicro.2010.06.002 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 0377-8398 Marine Micropaleontology https://univ-angers.hal.science/hal-03278092 Marine Micropaleontology, 2010, 76 (3–4), pp.92 - 103. ⟨10.1016/j.marmicro.2010.06.002⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marmicro.2010.06.002 hal-03278092 https://univ-angers.hal.science/hal-03278092 doi:10.1016/j.marmicro.2010.06.002 OKINA: ua3902 |
op_doi |
https://doi.org/10.1016/j.marmicro.2010.06.002 |
container_title |
Marine Micropaleontology |
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76 |
container_issue |
3-4 |
container_start_page |
92 |
op_container_end_page |
103 |
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1799487931093614592 |