The Growth Response of Two Diatom Species to Atmospheric Dust from the Last Glacial Maximum ...
Relief of iron (Fe) limitation in the surface Southern Ocean has been suggested as one driver of the regular glacial-interglacial cycles in atmospheric carbon dioxide (CO2). The proposed cause is enhanced deposition of Fe-bearing atmospheric dust to the oceans during glacial intervals, with conseque...
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Online Access: | https://dx.doi.org/10.3929/ethz-b-000118340 http://hdl.handle.net/20.500.11850/118340 |
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ftdatacite:10.3929/ethz-b-000118340 2024-04-28T07:57:06+00:00 The Growth Response of Two Diatom Species to Atmospheric Dust from the Last Glacial Maximum ... Conway, Tim M. Hoffmann, Linn J. Breitbarth, Eike Strzepek, Robert F. Wolff, Eric W. 2016 application/pdf https://dx.doi.org/10.3929/ethz-b-000118340 http://hdl.handle.net/20.500.11850/118340 en eng ETH Zurich info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 article-journal Text ScholarlyArticle Journal Article 2016 ftdatacite https://doi.org/10.3929/ethz-b-000118340 2024-04-02T12:33:25Z Relief of iron (Fe) limitation in the surface Southern Ocean has been suggested as one driver of the regular glacial-interglacial cycles in atmospheric carbon dioxide (CO2). The proposed cause is enhanced deposition of Fe-bearing atmospheric dust to the oceans during glacial intervals, with consequent effects on export production and the carbon cycle. However, understanding the role of enhanced atmospheric Fe supply in biogeochemical cycles is limited by knowledge of the fluxes and ‘bioavailability’ of atmospheric Fe during glacial intervals. Here, we assess the effect of Fe fertilization by dust, dry-extracted from the Last Glacial Maximum portion of the EPICA Dome C Antarctic ice core, on the Antarctic diatom species Eucampia antarctica and Proboscia inermis. Both species showed strong but differing reactions to dust addition. E. antarctica increased cell number (3880 vs. 786 cells mL-1), chlorophyll a (51 vs. 3.9 μg mL-1) and particulate organic carbon (POC; 1.68 vs. 0.28 μg mL-1) production in response ... : PLoS ONE, 11 (7) ... Article in Journal/Newspaper Antarc* Antarctic Antarctica E. Antarctica EPICA ice core Southern 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 |
description |
Relief of iron (Fe) limitation in the surface Southern Ocean has been suggested as one driver of the regular glacial-interglacial cycles in atmospheric carbon dioxide (CO2). The proposed cause is enhanced deposition of Fe-bearing atmospheric dust to the oceans during glacial intervals, with consequent effects on export production and the carbon cycle. However, understanding the role of enhanced atmospheric Fe supply in biogeochemical cycles is limited by knowledge of the fluxes and ‘bioavailability’ of atmospheric Fe during glacial intervals. Here, we assess the effect of Fe fertilization by dust, dry-extracted from the Last Glacial Maximum portion of the EPICA Dome C Antarctic ice core, on the Antarctic diatom species Eucampia antarctica and Proboscia inermis. Both species showed strong but differing reactions to dust addition. E. antarctica increased cell number (3880 vs. 786 cells mL-1), chlorophyll a (51 vs. 3.9 μg mL-1) and particulate organic carbon (POC; 1.68 vs. 0.28 μg mL-1) production in response ... : PLoS ONE, 11 (7) ... |
format |
Article in Journal/Newspaper |
author |
Conway, Tim M. Hoffmann, Linn J. Breitbarth, Eike Strzepek, Robert F. Wolff, Eric W. |
spellingShingle |
Conway, Tim M. Hoffmann, Linn J. Breitbarth, Eike Strzepek, Robert F. Wolff, Eric W. The Growth Response of Two Diatom Species to Atmospheric Dust from the Last Glacial Maximum ... |
author_facet |
Conway, Tim M. Hoffmann, Linn J. Breitbarth, Eike Strzepek, Robert F. Wolff, Eric W. |
author_sort |
Conway, Tim M. |
title |
The Growth Response of Two Diatom Species to Atmospheric Dust from the Last Glacial Maximum ... |
title_short |
The Growth Response of Two Diatom Species to Atmospheric Dust from the Last Glacial Maximum ... |
title_full |
The Growth Response of Two Diatom Species to Atmospheric Dust from the Last Glacial Maximum ... |
title_fullStr |
The Growth Response of Two Diatom Species to Atmospheric Dust from the Last Glacial Maximum ... |
title_full_unstemmed |
The Growth Response of Two Diatom Species to Atmospheric Dust from the Last Glacial Maximum ... |
title_sort |
growth response of two diatom species to atmospheric dust from the last glacial maximum ... |
publisher |
ETH Zurich |
publishDate |
2016 |
url |
https://dx.doi.org/10.3929/ethz-b-000118340 http://hdl.handle.net/20.500.11850/118340 |
genre |
Antarc* Antarctic Antarctica E. Antarctica EPICA ice core Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica E. Antarctica EPICA ice core Southern Ocean |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.3929/ethz-b-000118340 |
_version_ |
1797586808746278912 |