Latest Quaternary palaeoceanographic change in the eastern North Atlantic based upon a dinoflagellate cyst event ecostratigraphy
The analyses of dinoflagellate cyst records, from the latest Quaternary sediments recovered from DSDP Core 610A taken on the Feni Ridge in the southern Rockall Trough, and part of core MD01-2461 on the continental margin of the Porcupine Seabight in the eastern North Atlantic Ocean, has provided evi...
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ftpubmed:oai:pubmedcentral.nih.gov:4946179 2023-05-15T16:39:19+02:00 Latest Quaternary palaeoceanographic change in the eastern North Atlantic based upon a dinoflagellate cyst event ecostratigraphy Harland, Rex Polovodova Asteman, Irina Morley, Audrey Morris, Angela Harris, Anthony Howe, John A 2016-05-30 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4946179/ https://doi.org/10.1016/j.heliyon.2016.e00114 en eng Elsevier http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4946179/ http://dx.doi.org/10.1016/j.heliyon.2016.e00114 © 2016 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). CC-BY-NC-ND Article Text 2016 ftpubmed https://doi.org/10.1016/j.heliyon.2016.e00114 2016-07-24T00:14:24Z The analyses of dinoflagellate cyst records, from the latest Quaternary sediments recovered from DSDP Core 610A taken on the Feni Ridge in the southern Rockall Trough, and part of core MD01-2461 on the continental margin of the Porcupine Seabight in the eastern North Atlantic Ocean, has provided evidence for significant oceanographic change encompassing the Last Glacial Maximum (LGM) and part of the Holocene. This together with other published records has led to a regional evaluation of oceanographic change in the eastern North Atlantic over the past 68 ka, based upon a distinctive dinoflagellate event ecostratigraphy. These changes reflect changes in the surface waters of the North Atlantic Current (NAC), and perhaps the deeper thermohaline Atlantic Meridional Overturning Circulation (AMOC), driving fundamental regime changes within the phytoplanktonic communities. Three distinctive dinoflagellate cyst associations based upon both factor and cluster analyses have been recognised. Associations characterised by Bitectatodinium tepikiense (between 61.1 ± 6.2 to 13.4 ± 1.1 ka BP), Nematosphaeropsis labyrinthus (between 10.5 ± 0.3 and 11.45 ± 0.8 ka. BP), and the cyst of Protoceratium reticulatum (between 8.5 ± 0.9 and 5.2 ± 1.3 ka. BP) indicate major change within the eastern North Atlantic oceanography. The transitions between these changes occur over a relatively short time span (c.1.5 ka), given our sampling resolution, and have the potential to be incorporated into an event stratigraphy through the latest Quaternary as recommended by the INTIMATE (INTegrating Ice core, MArine and TErrestrial records) group. The inclusion of a dinoflagellate cyst event stratigraphy would highlight changes within the phytoplankton of the North Atlantic Ocean as a fully glacial world changed to our present interglacial. Text ice core north atlantic current North Atlantic PubMed Central (PMC) Feni Ridge ENVELOPE(-17.500,-17.500,54.000,54.000) Porcupine Seabight ENVELOPE(-13.000,-13.000,50.500,50.500) Rockall Trough ENVELOPE(-15.036,-15.036,53.825,53.825) Heliyon 2 5 e00114 |
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Article Harland, Rex Polovodova Asteman, Irina Morley, Audrey Morris, Angela Harris, Anthony Howe, John A Latest Quaternary palaeoceanographic change in the eastern North Atlantic based upon a dinoflagellate cyst event ecostratigraphy |
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Article |
description |
The analyses of dinoflagellate cyst records, from the latest Quaternary sediments recovered from DSDP Core 610A taken on the Feni Ridge in the southern Rockall Trough, and part of core MD01-2461 on the continental margin of the Porcupine Seabight in the eastern North Atlantic Ocean, has provided evidence for significant oceanographic change encompassing the Last Glacial Maximum (LGM) and part of the Holocene. This together with other published records has led to a regional evaluation of oceanographic change in the eastern North Atlantic over the past 68 ka, based upon a distinctive dinoflagellate event ecostratigraphy. These changes reflect changes in the surface waters of the North Atlantic Current (NAC), and perhaps the deeper thermohaline Atlantic Meridional Overturning Circulation (AMOC), driving fundamental regime changes within the phytoplanktonic communities. Three distinctive dinoflagellate cyst associations based upon both factor and cluster analyses have been recognised. Associations characterised by Bitectatodinium tepikiense (between 61.1 ± 6.2 to 13.4 ± 1.1 ka BP), Nematosphaeropsis labyrinthus (between 10.5 ± 0.3 and 11.45 ± 0.8 ka. BP), and the cyst of Protoceratium reticulatum (between 8.5 ± 0.9 and 5.2 ± 1.3 ka. BP) indicate major change within the eastern North Atlantic oceanography. The transitions between these changes occur over a relatively short time span (c.1.5 ka), given our sampling resolution, and have the potential to be incorporated into an event stratigraphy through the latest Quaternary as recommended by the INTIMATE (INTegrating Ice core, MArine and TErrestrial records) group. The inclusion of a dinoflagellate cyst event stratigraphy would highlight changes within the phytoplankton of the North Atlantic Ocean as a fully glacial world changed to our present interglacial. |
format |
Text |
author |
Harland, Rex Polovodova Asteman, Irina Morley, Audrey Morris, Angela Harris, Anthony Howe, John A |
author_facet |
Harland, Rex Polovodova Asteman, Irina Morley, Audrey Morris, Angela Harris, Anthony Howe, John A |
author_sort |
Harland, Rex |
title |
Latest Quaternary palaeoceanographic change in the eastern North Atlantic based upon a dinoflagellate cyst event ecostratigraphy |
title_short |
Latest Quaternary palaeoceanographic change in the eastern North Atlantic based upon a dinoflagellate cyst event ecostratigraphy |
title_full |
Latest Quaternary palaeoceanographic change in the eastern North Atlantic based upon a dinoflagellate cyst event ecostratigraphy |
title_fullStr |
Latest Quaternary palaeoceanographic change in the eastern North Atlantic based upon a dinoflagellate cyst event ecostratigraphy |
title_full_unstemmed |
Latest Quaternary palaeoceanographic change in the eastern North Atlantic based upon a dinoflagellate cyst event ecostratigraphy |
title_sort |
latest quaternary palaeoceanographic change in the eastern north atlantic based upon a dinoflagellate cyst event ecostratigraphy |
publisher |
Elsevier |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4946179/ https://doi.org/10.1016/j.heliyon.2016.e00114 |
long_lat |
ENVELOPE(-17.500,-17.500,54.000,54.000) ENVELOPE(-13.000,-13.000,50.500,50.500) ENVELOPE(-15.036,-15.036,53.825,53.825) |
geographic |
Feni Ridge Porcupine Seabight Rockall Trough |
geographic_facet |
Feni Ridge Porcupine Seabight Rockall Trough |
genre |
ice core north atlantic current North Atlantic |
genre_facet |
ice core north atlantic current North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4946179/ http://dx.doi.org/10.1016/j.heliyon.2016.e00114 |
op_rights |
© 2016 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.heliyon.2016.e00114 |
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Heliyon |
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2 |
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5 |
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e00114 |
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1766029652612087808 |