Supplementary material from "Strategies in times of crisis—insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum"
Climate change is predicted to alter temperature, carbonate chemistry and oxygen availability in the oceans, which will affect individuals, populations and ecosystems. We use the fossil record of benthic foraminifers to assess developmental impacts in response to environmental changes during the Pal...
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Online Access: | https://dx.doi.org/10.6084/m9.figshare.c.4186556 https://figshare.com/collections/Supplementary_material_from_Strategies_in_times_of_crisis_insights_into_the_benthic_foraminiferal_record_of_the_Paleocene_Eocene_thermal_maximum_/4186556 |
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ftdatacite:10.6084/m9.figshare.c.4186556 2023-05-15T18:25:11+02:00 Supplementary material from "Strategies in times of crisis—insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum" Schmidt, Daniela N. Thomas, Ellen Authier, Elisabeth Saunders, David Ridgwell, Andy 2018 https://dx.doi.org/10.6084/m9.figshare.c.4186556 https://figshare.com/collections/Supplementary_material_from_Strategies_in_times_of_crisis_insights_into_the_benthic_foraminiferal_record_of_the_Paleocene_Eocene_thermal_maximum_/4186556 unknown Figshare https://dx.doi.org/10.1098/rsta.2017.0328 CC BY 4.0 https://creativecommons.org/licenses/by/4.0 CC-BY 40308 Palaeontology incl. Palynology FOS Earth and related environmental sciences Collection article 2018 ftdatacite https://doi.org/10.6084/m9.figshare.c.4186556 https://doi.org/10.1098/rsta.2017.0328 2021-11-05T12:55:41Z Climate change is predicted to alter temperature, carbonate chemistry and oxygen availability in the oceans, which will affect individuals, populations and ecosystems. We use the fossil record of benthic foraminifers to assess developmental impacts in response to environmental changes during the Palaeocene–Eocene Thermal Maximum (PETM). Using an unprecedented number of µ-computed tomography scans, we determine the size of the proloculus (first chamber), the number of chambers and the final size of two benthic foraminiferal species which survived the extinction at sites 690 (Atlantic sector, Southern Ocean, palaeodepth 1900 m), 1210 (central equatorial Pacific, palaeodepth 2100 m) and 1135 (Indian Ocean sector, Southern Ocean, palaeodepth 600–1000 m). The population at the shallowest site, 1135, does not show a clear response to the PETM, whereas those at the other sites record reductions in diameter or proloculus size. Temperature was similar at all sites, thus it is not likely to be the reason for differences between sites. At site 1210, small size coincided with higher chamber numbers during the peak event, and may have been caused by a combination of low carbonate ion concentrations and low food supply. Dwarfing at site 690 occurred at lower chamber numbers, and may have been caused by decreasing carbonate saturation at sufficient food levels to reproduce. Proloculus size varied strongly between sites and through time, suggesting a large influence of environment on both microspheric and megalospheric forms without clear bimodality. The effect of the environmental changes during the PETM was more pronounced at deeper sites, possibly implicating carbonate saturation.This article is part of a discussion meeting issue ‘Hyperthermals—rapid and extreme global warming in our geological past’. Article in Journal/Newspaper Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Southern Ocean Pacific Indian |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
40308 Palaeontology incl. Palynology FOS Earth and related environmental sciences |
spellingShingle |
40308 Palaeontology incl. Palynology FOS Earth and related environmental sciences Schmidt, Daniela N. Thomas, Ellen Authier, Elisabeth Saunders, David Ridgwell, Andy Supplementary material from "Strategies in times of crisis—insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum" |
topic_facet |
40308 Palaeontology incl. Palynology FOS Earth and related environmental sciences |
description |
Climate change is predicted to alter temperature, carbonate chemistry and oxygen availability in the oceans, which will affect individuals, populations and ecosystems. We use the fossil record of benthic foraminifers to assess developmental impacts in response to environmental changes during the Palaeocene–Eocene Thermal Maximum (PETM). Using an unprecedented number of µ-computed tomography scans, we determine the size of the proloculus (first chamber), the number of chambers and the final size of two benthic foraminiferal species which survived the extinction at sites 690 (Atlantic sector, Southern Ocean, palaeodepth 1900 m), 1210 (central equatorial Pacific, palaeodepth 2100 m) and 1135 (Indian Ocean sector, Southern Ocean, palaeodepth 600–1000 m). The population at the shallowest site, 1135, does not show a clear response to the PETM, whereas those at the other sites record reductions in diameter or proloculus size. Temperature was similar at all sites, thus it is not likely to be the reason for differences between sites. At site 1210, small size coincided with higher chamber numbers during the peak event, and may have been caused by a combination of low carbonate ion concentrations and low food supply. Dwarfing at site 690 occurred at lower chamber numbers, and may have been caused by decreasing carbonate saturation at sufficient food levels to reproduce. Proloculus size varied strongly between sites and through time, suggesting a large influence of environment on both microspheric and megalospheric forms without clear bimodality. The effect of the environmental changes during the PETM was more pronounced at deeper sites, possibly implicating carbonate saturation.This article is part of a discussion meeting issue ‘Hyperthermals—rapid and extreme global warming in our geological past’. |
format |
Article in Journal/Newspaper |
author |
Schmidt, Daniela N. Thomas, Ellen Authier, Elisabeth Saunders, David Ridgwell, Andy |
author_facet |
Schmidt, Daniela N. Thomas, Ellen Authier, Elisabeth Saunders, David Ridgwell, Andy |
author_sort |
Schmidt, Daniela N. |
title |
Supplementary material from "Strategies in times of crisis—insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum" |
title_short |
Supplementary material from "Strategies in times of crisis—insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum" |
title_full |
Supplementary material from "Strategies in times of crisis—insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum" |
title_fullStr |
Supplementary material from "Strategies in times of crisis—insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum" |
title_full_unstemmed |
Supplementary material from "Strategies in times of crisis—insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum" |
title_sort |
supplementary material from "strategies in times of crisis—insights into the benthic foraminiferal record of the palaeocene–eocene thermal maximum" |
publisher |
Figshare |
publishDate |
2018 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.4186556 https://figshare.com/collections/Supplementary_material_from_Strategies_in_times_of_crisis_insights_into_the_benthic_foraminiferal_record_of_the_Paleocene_Eocene_thermal_maximum_/4186556 |
geographic |
Southern Ocean Pacific Indian |
geographic_facet |
Southern Ocean Pacific Indian |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://dx.doi.org/10.1098/rsta.2017.0328 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.4186556 https://doi.org/10.1098/rsta.2017.0328 |
_version_ |
1766206444748668928 |