A nutrient control on marine anoxia during the end-Permian mass extinction
© 2020, The Author(s), under exclusive licence to Springer Nature Limited. Oxygen deprivation and hydrogen sulfide toxicity are considered potent kill mechanisms during the mass extinction just before the Permian–Triassic boundary (~251.9 million years ago). However, the mechanism that drove vast st...
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ftunivhullir:oai:hull-repository.worktribe.com:3538458 2024-06-23T07:57:05+00:00 A nutrient control on marine anoxia during the end-Permian mass extinction Bond, David P.G. Schobben, Martin Foster, William J. Sleveland, Arve R. Svensen, Henrik Planke, Sverre Marcelis, Fons Newton, Robert J. Wignall, Paul B. Poulton, Simon W. Zuchuat, Valentin 2020-01-01 https://hull-repository.worktribe.com/file/3538458/1/Article https://hull-repository.worktribe.com/output/3538458 https://doi.org/10.1038/s41561-020-0622-1 unknown Nature Publishing Group https://hull-repository.worktribe.com/output/3538458 Nature Geoscience doi:https://doi.org/10.1038/s41561-020-0622-1 https://hull-repository.worktribe.com/file/3538458/1/Article 1752-0894 doi:10.1038/s41561-020-0622-1 openAccess Element cycles Palaeoceanography Palaeoclimate Palaeontology Specialist Research - Other Energy Environment and Sustainability Journal Article acceptedVersion 2020 ftunivhullir https://doi.org/10.1038/s41561-020-0622-1 2024-06-10T14:12:37Z © 2020, The Author(s), under exclusive licence to Springer Nature Limited. Oxygen deprivation and hydrogen sulfide toxicity are considered potent kill mechanisms during the mass extinction just before the Permian–Triassic boundary (~251.9 million years ago). However, the mechanism that drove vast stretches of the ocean to an anoxic state is unclear. Here, we present palaeoredox and phosphorus speciation data for a marine bathymetric transect from Svalbard. This shows that, before the extinction, enhanced weathering driven by Siberian Traps volcanism increased the influx of phosphorus, thus enhancing marine primary productivity and oxygen depletion in proximal shelf settings. However, this non-sulfidic state efficiently sequestered phosphorus in the sediment in association with iron minerals, thus restricting the intensity and spatial extent of oxygen-depleted waters. The collapse of vegetation on land immediately before the marine extinction changed the relative weathering influx of iron and sulfate. The resulting transition to euxinic (sulfidic) conditions led to enhanced remobilization of bioavailable phosphorus, initiating a feedback that caused the spread of anoxic waters across large portions of the shelf. This reconciles a lag of >0.3 million years between the onset of enhanced weathering and the development of widespread, but geographically variable, ocean anoxia, with major implications for extinction selectivity. Article in Journal/Newspaper Svalbard University of Hull: Repository@Hull Svalbard Nature Geoscience 13 9 640 646 |
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University of Hull: Repository@Hull |
op_collection_id |
ftunivhullir |
language |
unknown |
topic |
Element cycles Palaeoceanography Palaeoclimate Palaeontology Specialist Research - Other Energy Environment and Sustainability |
spellingShingle |
Element cycles Palaeoceanography Palaeoclimate Palaeontology Specialist Research - Other Energy Environment and Sustainability Bond, David P.G. Schobben, Martin Foster, William J. Sleveland, Arve R. Svensen, Henrik Planke, Sverre Marcelis, Fons Newton, Robert J. Wignall, Paul B. Poulton, Simon W. Zuchuat, Valentin A nutrient control on marine anoxia during the end-Permian mass extinction |
topic_facet |
Element cycles Palaeoceanography Palaeoclimate Palaeontology Specialist Research - Other Energy Environment and Sustainability |
description |
© 2020, The Author(s), under exclusive licence to Springer Nature Limited. Oxygen deprivation and hydrogen sulfide toxicity are considered potent kill mechanisms during the mass extinction just before the Permian–Triassic boundary (~251.9 million years ago). However, the mechanism that drove vast stretches of the ocean to an anoxic state is unclear. Here, we present palaeoredox and phosphorus speciation data for a marine bathymetric transect from Svalbard. This shows that, before the extinction, enhanced weathering driven by Siberian Traps volcanism increased the influx of phosphorus, thus enhancing marine primary productivity and oxygen depletion in proximal shelf settings. However, this non-sulfidic state efficiently sequestered phosphorus in the sediment in association with iron minerals, thus restricting the intensity and spatial extent of oxygen-depleted waters. The collapse of vegetation on land immediately before the marine extinction changed the relative weathering influx of iron and sulfate. The resulting transition to euxinic (sulfidic) conditions led to enhanced remobilization of bioavailable phosphorus, initiating a feedback that caused the spread of anoxic waters across large portions of the shelf. This reconciles a lag of >0.3 million years between the onset of enhanced weathering and the development of widespread, but geographically variable, ocean anoxia, with major implications for extinction selectivity. |
format |
Article in Journal/Newspaper |
author |
Bond, David P.G. Schobben, Martin Foster, William J. Sleveland, Arve R. Svensen, Henrik Planke, Sverre Marcelis, Fons Newton, Robert J. Wignall, Paul B. Poulton, Simon W. Zuchuat, Valentin |
author_facet |
Bond, David P.G. Schobben, Martin Foster, William J. Sleveland, Arve R. Svensen, Henrik Planke, Sverre Marcelis, Fons Newton, Robert J. Wignall, Paul B. Poulton, Simon W. Zuchuat, Valentin |
author_sort |
Bond, David P.G. |
title |
A nutrient control on marine anoxia during the end-Permian mass extinction |
title_short |
A nutrient control on marine anoxia during the end-Permian mass extinction |
title_full |
A nutrient control on marine anoxia during the end-Permian mass extinction |
title_fullStr |
A nutrient control on marine anoxia during the end-Permian mass extinction |
title_full_unstemmed |
A nutrient control on marine anoxia during the end-Permian mass extinction |
title_sort |
nutrient control on marine anoxia during the end-permian mass extinction |
publisher |
Nature Publishing Group |
publishDate |
2020 |
url |
https://hull-repository.worktribe.com/file/3538458/1/Article https://hull-repository.worktribe.com/output/3538458 https://doi.org/10.1038/s41561-020-0622-1 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Svalbard |
genre_facet |
Svalbard |
op_relation |
https://hull-repository.worktribe.com/output/3538458 Nature Geoscience doi:https://doi.org/10.1038/s41561-020-0622-1 https://hull-repository.worktribe.com/file/3538458/1/Article 1752-0894 doi:10.1038/s41561-020-0622-1 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1038/s41561-020-0622-1 |
container_title |
Nature Geoscience |
container_volume |
13 |
container_issue |
9 |
container_start_page |
640 |
op_container_end_page |
646 |
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1802650546528583680 |