Data from: Degradation of internal organic matter is the main control on pteropod shell dissolution after death
The potential for preservation of thecosome pteropods is thought to be largely governed by the chemical stability of their delicate aragonitic shells in seawater. However, sediment trap studies have found that significant carbonate dissolution can occur above the carbonate saturation horizon. Here w...
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ftdryad:oai:v1.datadryad.org:10255/dryad.215160 2023-05-15T18:16:01+02:00 Data from: Degradation of internal organic matter is the main control on pteropod shell dissolution after death Oakes, Rosie L. Peck, Victoria L. Manno, Clara Bralower, Timothy J. Southern Ocean north west of South Georgia south west of South Georgia -53.81174N -40.11167E -55.19129N -41.34553E Holocene 2019-05-09T20:59:52Z http://hdl.handle.net/10255/dryad.215160 https://doi.org/10.5061/dryad.8ts30t5 unknown doi:10.5061/dryad.8ts30t5/1 doi:10.5061/dryad.8ts30t5/2 doi:10.5061/dryad.8ts30t5/3 doi:10.5061/dryad.8ts30t5/4 doi:10.1029/2019GB006223 doi:10.5061/dryad.8ts30t5 Oakes R, Peck V, Manno C, Bralower T (2019) Degradation of internal organic matter is the main control on pteropod shell dissolution after death. Global Biogeochemical Cycles. http://hdl.handle.net/10255/dryad.215160 pteropod decay taphonomy plankton Article 2019 ftdryad https://doi.org/10.5061/dryad.8ts30t5 https://doi.org/10.5061/dryad.8ts30t5/1 https://doi.org/10.5061/dryad.8ts30t5/2 https://doi.org/10.5061/dryad.8ts30t5/3 https://doi.org/10.5061/dryad.8ts30t5/4 https://doi.org/10.1029/2019GB006223 https:// 2020-01-01T16:27:49Z The potential for preservation of thecosome pteropods is thought to be largely governed by the chemical stability of their delicate aragonitic shells in seawater. However, sediment trap studies have found that significant carbonate dissolution can occur above the carbonate saturation horizon. Here we present the results from experiments conducted on two cruises to the Scotia Sea to directly test whether the breakdown of the organic pteropod body influences shell dissolution. We find that, on the timescales of three to thirteen days, the oxidation of organic matter within the shells of dead pteropods is a stronger driver of shell dissolution than the saturation state of seawater. Three to four days after death, shells became milky white and nano‐SEM images reveal smoothing of internal surface features and increased shell porosity, both indicative of aragonite dissolution. These findings have implications for the interpretation of the condition of pteropod shells from sediment traps and the fossil record, as well as for understanding the processes controlling particulate carbonate export from the surface ocean. Article in Journal/Newspaper Scotia Sea Southern Ocean Dryad Digital Repository (Duke University) Southern Ocean Scotia Sea |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
pteropod decay taphonomy plankton |
spellingShingle |
pteropod decay taphonomy plankton Oakes, Rosie L. Peck, Victoria L. Manno, Clara Bralower, Timothy J. Data from: Degradation of internal organic matter is the main control on pteropod shell dissolution after death |
topic_facet |
pteropod decay taphonomy plankton |
description |
The potential for preservation of thecosome pteropods is thought to be largely governed by the chemical stability of their delicate aragonitic shells in seawater. However, sediment trap studies have found that significant carbonate dissolution can occur above the carbonate saturation horizon. Here we present the results from experiments conducted on two cruises to the Scotia Sea to directly test whether the breakdown of the organic pteropod body influences shell dissolution. We find that, on the timescales of three to thirteen days, the oxidation of organic matter within the shells of dead pteropods is a stronger driver of shell dissolution than the saturation state of seawater. Three to four days after death, shells became milky white and nano‐SEM images reveal smoothing of internal surface features and increased shell porosity, both indicative of aragonite dissolution. These findings have implications for the interpretation of the condition of pteropod shells from sediment traps and the fossil record, as well as for understanding the processes controlling particulate carbonate export from the surface ocean. |
format |
Article in Journal/Newspaper |
author |
Oakes, Rosie L. Peck, Victoria L. Manno, Clara Bralower, Timothy J. |
author_facet |
Oakes, Rosie L. Peck, Victoria L. Manno, Clara Bralower, Timothy J. |
author_sort |
Oakes, Rosie L. |
title |
Data from: Degradation of internal organic matter is the main control on pteropod shell dissolution after death |
title_short |
Data from: Degradation of internal organic matter is the main control on pteropod shell dissolution after death |
title_full |
Data from: Degradation of internal organic matter is the main control on pteropod shell dissolution after death |
title_fullStr |
Data from: Degradation of internal organic matter is the main control on pteropod shell dissolution after death |
title_full_unstemmed |
Data from: Degradation of internal organic matter is the main control on pteropod shell dissolution after death |
title_sort |
data from: degradation of internal organic matter is the main control on pteropod shell dissolution after death |
publishDate |
2019 |
url |
http://hdl.handle.net/10255/dryad.215160 https://doi.org/10.5061/dryad.8ts30t5 |
op_coverage |
Southern Ocean north west of South Georgia south west of South Georgia -53.81174N -40.11167E -55.19129N -41.34553E Holocene |
geographic |
Southern Ocean Scotia Sea |
geographic_facet |
Southern Ocean Scotia Sea |
genre |
Scotia Sea Southern Ocean |
genre_facet |
Scotia Sea Southern Ocean |
op_relation |
doi:10.5061/dryad.8ts30t5/1 doi:10.5061/dryad.8ts30t5/2 doi:10.5061/dryad.8ts30t5/3 doi:10.5061/dryad.8ts30t5/4 doi:10.1029/2019GB006223 doi:10.5061/dryad.8ts30t5 Oakes R, Peck V, Manno C, Bralower T (2019) Degradation of internal organic matter is the main control on pteropod shell dissolution after death. Global Biogeochemical Cycles. http://hdl.handle.net/10255/dryad.215160 |
op_doi |
https://doi.org/10.5061/dryad.8ts30t5 https://doi.org/10.5061/dryad.8ts30t5/1 https://doi.org/10.5061/dryad.8ts30t5/2 https://doi.org/10.5061/dryad.8ts30t5/3 https://doi.org/10.5061/dryad.8ts30t5/4 https://doi.org/10.1029/2019GB006223 https:// |
_version_ |
1766189417588850688 |