Coupled microbial bloom and oxygenation decline recorded by magnetofossils during the Palaeocene-Eocene Thermal Maximum.
Understanding marine environmental change and associated biological turnover across the Palaeocene-Eocene Thermal Maximum (PETM; ~56 Ma)-the most pronounced Cenozoic short-term global warming event-is important because of the potential role of the ocean in atmospheric CO2 drawdown, yet proxies for t...
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ftunivcam:oai:www.repository.cam.ac.uk:1810/285468 2024-02-04T10:04:32+01:00 Coupled microbial bloom and oxygenation decline recorded by magnetofossils during the Palaeocene-Eocene Thermal Maximum. Chang, Liao Harrison, Richard J Zeng, Fan Berndt, Thomas A Roberts, Andrew P Heslop, David Zhao, Xiang 2018-10-01 Electronic application/pdf https://www.repository.cam.ac.uk/handle/1810/285468 https://doi.org/10.17863/CAM.32826 eng eng Springer Science and Business Media LLC http://dx.doi.org/10.1038/s41467-018-06472-y Nat Commun https://www.repository.cam.ac.uk/handle/1810/285468 doi:10.17863/CAM.32826 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Atlantic Ocean Bacteria Carbon Isotopes Carbonates Computer Simulation Ecosystem Ferrosoferric Oxide Fossils Geologic Sediments Global Warming History Ancient Hypoxia Magnetosomes Models Theoretical Seawater Article 2018 ftunivcam https://doi.org/10.17863/CAM.32826 2024-01-11T23:24:56Z Understanding marine environmental change and associated biological turnover across the Palaeocene-Eocene Thermal Maximum (PETM; ~56 Ma)-the most pronounced Cenozoic short-term global warming event-is important because of the potential role of the ocean in atmospheric CO2 drawdown, yet proxies for tracing marine productivity and oxygenation across the PETM are limited and results remain controversial. Here we show that a high-resolution record of South Atlantic Ocean bottom water oxygenation can be extracted from exceptionally preserved magnetofossils-the bioinorganic magnetite nanocrystals produced by magnetotactic bacteria (MTB) using a new multiscale environmental magnetic approach. Our results suggest that a transient MTB bloom occurred due to increased nutrient supply. Bottom water oxygenation decreased gradually from the onset to the peak PETM. These observations provide a record of microbial response to the PETM and establish the value of magnetofossils as palaeoenvironmental indicators. European Research Council Article in Journal/Newspaper South Atlantic Ocean Apollo - University of Cambridge Repository |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
Atlantic Ocean Bacteria Carbon Isotopes Carbonates Computer Simulation Ecosystem Ferrosoferric Oxide Fossils Geologic Sediments Global Warming History Ancient Hypoxia Magnetosomes Models Theoretical Seawater |
spellingShingle |
Atlantic Ocean Bacteria Carbon Isotopes Carbonates Computer Simulation Ecosystem Ferrosoferric Oxide Fossils Geologic Sediments Global Warming History Ancient Hypoxia Magnetosomes Models Theoretical Seawater Chang, Liao Harrison, Richard J Zeng, Fan Berndt, Thomas A Roberts, Andrew P Heslop, David Zhao, Xiang Coupled microbial bloom and oxygenation decline recorded by magnetofossils during the Palaeocene-Eocene Thermal Maximum. |
topic_facet |
Atlantic Ocean Bacteria Carbon Isotopes Carbonates Computer Simulation Ecosystem Ferrosoferric Oxide Fossils Geologic Sediments Global Warming History Ancient Hypoxia Magnetosomes Models Theoretical Seawater |
description |
Understanding marine environmental change and associated biological turnover across the Palaeocene-Eocene Thermal Maximum (PETM; ~56 Ma)-the most pronounced Cenozoic short-term global warming event-is important because of the potential role of the ocean in atmospheric CO2 drawdown, yet proxies for tracing marine productivity and oxygenation across the PETM are limited and results remain controversial. Here we show that a high-resolution record of South Atlantic Ocean bottom water oxygenation can be extracted from exceptionally preserved magnetofossils-the bioinorganic magnetite nanocrystals produced by magnetotactic bacteria (MTB) using a new multiscale environmental magnetic approach. Our results suggest that a transient MTB bloom occurred due to increased nutrient supply. Bottom water oxygenation decreased gradually from the onset to the peak PETM. These observations provide a record of microbial response to the PETM and establish the value of magnetofossils as palaeoenvironmental indicators. European Research Council |
format |
Article in Journal/Newspaper |
author |
Chang, Liao Harrison, Richard J Zeng, Fan Berndt, Thomas A Roberts, Andrew P Heslop, David Zhao, Xiang |
author_facet |
Chang, Liao Harrison, Richard J Zeng, Fan Berndt, Thomas A Roberts, Andrew P Heslop, David Zhao, Xiang |
author_sort |
Chang, Liao |
title |
Coupled microbial bloom and oxygenation decline recorded by magnetofossils during the Palaeocene-Eocene Thermal Maximum. |
title_short |
Coupled microbial bloom and oxygenation decline recorded by magnetofossils during the Palaeocene-Eocene Thermal Maximum. |
title_full |
Coupled microbial bloom and oxygenation decline recorded by magnetofossils during the Palaeocene-Eocene Thermal Maximum. |
title_fullStr |
Coupled microbial bloom and oxygenation decline recorded by magnetofossils during the Palaeocene-Eocene Thermal Maximum. |
title_full_unstemmed |
Coupled microbial bloom and oxygenation decline recorded by magnetofossils during the Palaeocene-Eocene Thermal Maximum. |
title_sort |
coupled microbial bloom and oxygenation decline recorded by magnetofossils during the palaeocene-eocene thermal maximum. |
publisher |
Springer Science and Business Media LLC |
publishDate |
2018 |
url |
https://www.repository.cam.ac.uk/handle/1810/285468 https://doi.org/10.17863/CAM.32826 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/285468 doi:10.17863/CAM.32826 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.17863/CAM.32826 |
_version_ |
1789973064235089920 |