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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Online Access: | https://dx.doi.org/10.17863/cam.32826 https://www.repository.cam.ac.uk/handle/1810/285468 |
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ftdatacite:10.17863/cam.32826 2024-02-27T08:45:28+00:00 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 https://dx.doi.org/10.17863/cam.32826 https://www.repository.cam.ac.uk/handle/1810/285468 en eng Springer Science and Business Media LLC open.access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 http://purl.org/coar/access_right/c_abf2 Atlantic Ocean Bacteria Carbon Isotopes Carbonates Computer Simulation Ecosystem Ferrosoferric Oxide Fossils Geologic Sediments Global Warming History, Ancient Hypoxia Magnetosomes Models, Theoretical Seawater article-journal ScholarlyArticle JournalArticle Article 2018 ftdatacite https://doi.org/10.17863/cam.32826 2024-02-01T14:55:03Z 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. ... Article in Journal/Newspaper South Atlantic Ocean DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
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. ... |
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://dx.doi.org/10.17863/cam.32826 https://www.repository.cam.ac.uk/handle/1810/285468 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_rights |
open.access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.17863/cam.32826 |
_version_ |
1792054636044091392 |