Atmospheric CO2 effect on stable carbon isotope composition of terrestrial fossil archives.
The 13C/12C ratio of C3 plant matter is thought to be controlled by the isotopic composition of atmospheric CO2 and stomatal response to environmental conditions, particularly mean annual precipitation (MAP). The effect of CO2 concentration on 13C/12C ratios is currently debated, yet crucial to reco...
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ftunivcam:oai:www.repository.cam.ac.uk:1810/283443 2024-02-04T10:01:12+01:00 Atmospheric CO2 effect on stable carbon isotope composition of terrestrial fossil archives. Hare, Vincent J Loftus, Emma Jeffrey, Amy Ramsey, Christopher Bronk 2018-01-17 Electronic application/pdf https://www.repository.cam.ac.uk/handle/1810/283443 https://doi.org/10.17863/CAM.30810 eng eng Springer Science and Business Media LLC http://dx.doi.org/10.1038/s41467-017-02691-x Nat Commun https://www.repository.cam.ac.uk/handle/1810/283443 doi:10.17863/CAM.30810 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Atmosphere Carbon Cycle Carbon Dioxide Carbon Isotopes Climate Climate Change Fossils Photosynthesis Plants Rain Article 2018 ftunivcam https://doi.org/10.17863/CAM.30810 2024-01-11T23:32:45Z The 13C/12C ratio of C3 plant matter is thought to be controlled by the isotopic composition of atmospheric CO2 and stomatal response to environmental conditions, particularly mean annual precipitation (MAP). The effect of CO2 concentration on 13C/12C ratios is currently debated, yet crucial to reconstructing ancient environments and quantifying the carbon cycle. Here we compare high-resolution ice core measurements of atmospheric CO2 with fossil plant and faunal isotope records. We show the effect of pCO2 during the last deglaciation is stronger for gymnosperms (-1.4 ± 1.2‰) than angiosperms/fauna (-0.5 ± 1.5‰), while the contributions from changing MAP are -0.3 ± 0.6‰ and -0.4 ± 0.4‰, respectively. Previous studies have assumed that plant 13C/12C ratios are mostly determined by MAP, an assumption which is sometimes incorrect in geological time. Atmospheric effects must be taken into account when interpreting terrestrial stable carbon isotopes, with important implications for past environments and climates, and understanding plant responses to climate change. Article in Journal/Newspaper ice core Apollo - University of Cambridge Repository |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
Atmosphere Carbon Cycle Carbon Dioxide Carbon Isotopes Climate Climate Change Fossils Photosynthesis Plants Rain |
spellingShingle |
Atmosphere Carbon Cycle Carbon Dioxide Carbon Isotopes Climate Climate Change Fossils Photosynthesis Plants Rain Hare, Vincent J Loftus, Emma Jeffrey, Amy Ramsey, Christopher Bronk Atmospheric CO2 effect on stable carbon isotope composition of terrestrial fossil archives. |
topic_facet |
Atmosphere Carbon Cycle Carbon Dioxide Carbon Isotopes Climate Climate Change Fossils Photosynthesis Plants Rain |
description |
The 13C/12C ratio of C3 plant matter is thought to be controlled by the isotopic composition of atmospheric CO2 and stomatal response to environmental conditions, particularly mean annual precipitation (MAP). The effect of CO2 concentration on 13C/12C ratios is currently debated, yet crucial to reconstructing ancient environments and quantifying the carbon cycle. Here we compare high-resolution ice core measurements of atmospheric CO2 with fossil plant and faunal isotope records. We show the effect of pCO2 during the last deglaciation is stronger for gymnosperms (-1.4 ± 1.2‰) than angiosperms/fauna (-0.5 ± 1.5‰), while the contributions from changing MAP are -0.3 ± 0.6‰ and -0.4 ± 0.4‰, respectively. Previous studies have assumed that plant 13C/12C ratios are mostly determined by MAP, an assumption which is sometimes incorrect in geological time. Atmospheric effects must be taken into account when interpreting terrestrial stable carbon isotopes, with important implications for past environments and climates, and understanding plant responses to climate change. |
format |
Article in Journal/Newspaper |
author |
Hare, Vincent J Loftus, Emma Jeffrey, Amy Ramsey, Christopher Bronk |
author_facet |
Hare, Vincent J Loftus, Emma Jeffrey, Amy Ramsey, Christopher Bronk |
author_sort |
Hare, Vincent J |
title |
Atmospheric CO2 effect on stable carbon isotope composition of terrestrial fossil archives. |
title_short |
Atmospheric CO2 effect on stable carbon isotope composition of terrestrial fossil archives. |
title_full |
Atmospheric CO2 effect on stable carbon isotope composition of terrestrial fossil archives. |
title_fullStr |
Atmospheric CO2 effect on stable carbon isotope composition of terrestrial fossil archives. |
title_full_unstemmed |
Atmospheric CO2 effect on stable carbon isotope composition of terrestrial fossil archives. |
title_sort |
atmospheric co2 effect on stable carbon isotope composition of terrestrial fossil archives. |
publisher |
Springer Science and Business Media LLC |
publishDate |
2018 |
url |
https://www.repository.cam.ac.uk/handle/1810/283443 https://doi.org/10.17863/CAM.30810 |
genre |
ice core |
genre_facet |
ice core |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/283443 doi:10.17863/CAM.30810 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.17863/CAM.30810 |
_version_ |
1789966926959607808 |