Benthic foraminifera abundance data of sediment core GeoB7926-2, supplement to: McKay, Claire L; Filipsson, Helena L; Romero, Oscar E; Stuut, Jan-Berend W; Donner, Barbara (2014): Pelagic–benthic coupling within an upwelling system of the subtropical northeast Atlantic over the last 35 ka BP. Quaternary Science Reviews, 106, 299-315
We present a high resolution, multiproxy study of the relationship between pelagic and benthic environments of a coastal upwelling system in the subtropical NE Atlantic Ocean. Marine sediments corresponding to late MIS3 to the Holocene in the radiocarbon dated core GeoB7926, retrieved off Mauritania...
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ftdatacite:10.1594/pangaea.847824 2023-05-15T17:41:44+02:00 Benthic foraminifera abundance data of sediment core GeoB7926-2, supplement to: McKay, Claire L; Filipsson, Helena L; Romero, Oscar E; Stuut, Jan-Berend W; Donner, Barbara (2014): Pelagic–benthic coupling within an upwelling system of the subtropical northeast Atlantic over the last 35 ka BP. Quaternary Science Reviews, 106, 299-315 McKay, Claire L Filipsson, Helena L Romero, Oscar E Stuut, Jan-Berend W Donner, Barbara 2014 application/zip https://dx.doi.org/10.1594/pangaea.847824 https://doi.pangaea.de/10.1594/PANGAEA.847824 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.quascirev.2014.04.027 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Geosciences, University of Bremen GeoB Collection article Supplementary Collection of Datasets 2014 ftdatacite https://doi.org/10.1594/pangaea.847824 https://doi.org/10.1016/j.quascirev.2014.04.027 2021-11-05T12:55:41Z We present a high resolution, multiproxy study of the relationship between pelagic and benthic environments of a coastal upwelling system in the subtropical NE Atlantic Ocean. Marine sediments corresponding to late MIS3 to the Holocene in the radiocarbon dated core GeoB7926, retrieved off Mauritania (21°N) were analysed to reconstruct productivity in surface waters and its linkage to deep waters during the last 35 ka BP. High latitude cold events and changes in atmospheric and oceanographic dynamics influenced upwelling intensity over this time period. Subsequently, this caused changes in primary productivity off this low-latitude coastal upwelling locality. The benthic foraminiferal fauna displays four main community shifts corresponding to fundamental climatic events, first of all during late MIS3 (35-28 ka BP), secondly from 28 to 19 ka BP (including Heinrich event 2 and the LGM), thirdly within Heinrich event 1, the Bølling Allerød and the Younger Dryas (18-11.5 ka BP) and finally during the Holocene (11.5-0 ka BP). In particular, strong pelagic-benthic coupling is apparent in MIS 3, as demonstrated by increased primary productivity, indicated by moderate DAR and the dominance of benthic foraminiferal species which prefer fresh phytodetritus. A decline in upwelling intensity and nutrient availability follows, which resulted in a proportionately larger amount of older, degraded matter, provoking a shift in the benthic foraminifera fauna composition. This rapid response of the benthic environment continues with a progressive increase in upwelling intensity due to sea level and oceanographic changes and according high surface production during the LGM. During Heinrich event 1 and the Younger Dryas, extreme levels of primary production actually hindered benthic environment through the development of low oxygen conditions. After this period, a final change in benthic foraminiferal community composition occurs which indicates a return to more oxygenated conditions during the Holocene. Article in Journal/Newspaper Northeast Atlantic DataCite Metadata Store (German National Library of Science and Technology) Romero ENVELOPE(-57.350,-57.350,-63.283,-63.283) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Geosciences, University of Bremen GeoB |
spellingShingle |
Geosciences, University of Bremen GeoB McKay, Claire L Filipsson, Helena L Romero, Oscar E Stuut, Jan-Berend W Donner, Barbara Benthic foraminifera abundance data of sediment core GeoB7926-2, supplement to: McKay, Claire L; Filipsson, Helena L; Romero, Oscar E; Stuut, Jan-Berend W; Donner, Barbara (2014): Pelagic–benthic coupling within an upwelling system of the subtropical northeast Atlantic over the last 35 ka BP. Quaternary Science Reviews, 106, 299-315 |
topic_facet |
Geosciences, University of Bremen GeoB |
description |
We present a high resolution, multiproxy study of the relationship between pelagic and benthic environments of a coastal upwelling system in the subtropical NE Atlantic Ocean. Marine sediments corresponding to late MIS3 to the Holocene in the radiocarbon dated core GeoB7926, retrieved off Mauritania (21°N) were analysed to reconstruct productivity in surface waters and its linkage to deep waters during the last 35 ka BP. High latitude cold events and changes in atmospheric and oceanographic dynamics influenced upwelling intensity over this time period. Subsequently, this caused changes in primary productivity off this low-latitude coastal upwelling locality. The benthic foraminiferal fauna displays four main community shifts corresponding to fundamental climatic events, first of all during late MIS3 (35-28 ka BP), secondly from 28 to 19 ka BP (including Heinrich event 2 and the LGM), thirdly within Heinrich event 1, the Bølling Allerød and the Younger Dryas (18-11.5 ka BP) and finally during the Holocene (11.5-0 ka BP). In particular, strong pelagic-benthic coupling is apparent in MIS 3, as demonstrated by increased primary productivity, indicated by moderate DAR and the dominance of benthic foraminiferal species which prefer fresh phytodetritus. A decline in upwelling intensity and nutrient availability follows, which resulted in a proportionately larger amount of older, degraded matter, provoking a shift in the benthic foraminifera fauna composition. This rapid response of the benthic environment continues with a progressive increase in upwelling intensity due to sea level and oceanographic changes and according high surface production during the LGM. During Heinrich event 1 and the Younger Dryas, extreme levels of primary production actually hindered benthic environment through the development of low oxygen conditions. After this period, a final change in benthic foraminiferal community composition occurs which indicates a return to more oxygenated conditions during the Holocene. |
format |
Article in Journal/Newspaper |
author |
McKay, Claire L Filipsson, Helena L Romero, Oscar E Stuut, Jan-Berend W Donner, Barbara |
author_facet |
McKay, Claire L Filipsson, Helena L Romero, Oscar E Stuut, Jan-Berend W Donner, Barbara |
author_sort |
McKay, Claire L |
title |
Benthic foraminifera abundance data of sediment core GeoB7926-2, supplement to: McKay, Claire L; Filipsson, Helena L; Romero, Oscar E; Stuut, Jan-Berend W; Donner, Barbara (2014): Pelagic–benthic coupling within an upwelling system of the subtropical northeast Atlantic over the last 35 ka BP. Quaternary Science Reviews, 106, 299-315 |
title_short |
Benthic foraminifera abundance data of sediment core GeoB7926-2, supplement to: McKay, Claire L; Filipsson, Helena L; Romero, Oscar E; Stuut, Jan-Berend W; Donner, Barbara (2014): Pelagic–benthic coupling within an upwelling system of the subtropical northeast Atlantic over the last 35 ka BP. Quaternary Science Reviews, 106, 299-315 |
title_full |
Benthic foraminifera abundance data of sediment core GeoB7926-2, supplement to: McKay, Claire L; Filipsson, Helena L; Romero, Oscar E; Stuut, Jan-Berend W; Donner, Barbara (2014): Pelagic–benthic coupling within an upwelling system of the subtropical northeast Atlantic over the last 35 ka BP. Quaternary Science Reviews, 106, 299-315 |
title_fullStr |
Benthic foraminifera abundance data of sediment core GeoB7926-2, supplement to: McKay, Claire L; Filipsson, Helena L; Romero, Oscar E; Stuut, Jan-Berend W; Donner, Barbara (2014): Pelagic–benthic coupling within an upwelling system of the subtropical northeast Atlantic over the last 35 ka BP. Quaternary Science Reviews, 106, 299-315 |
title_full_unstemmed |
Benthic foraminifera abundance data of sediment core GeoB7926-2, supplement to: McKay, Claire L; Filipsson, Helena L; Romero, Oscar E; Stuut, Jan-Berend W; Donner, Barbara (2014): Pelagic–benthic coupling within an upwelling system of the subtropical northeast Atlantic over the last 35 ka BP. Quaternary Science Reviews, 106, 299-315 |
title_sort |
benthic foraminifera abundance data of sediment core geob7926-2, supplement to: mckay, claire l; filipsson, helena l; romero, oscar e; stuut, jan-berend w; donner, barbara (2014): pelagic–benthic coupling within an upwelling system of the subtropical northeast atlantic over the last 35 ka bp. quaternary science reviews, 106, 299-315 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2014 |
url |
https://dx.doi.org/10.1594/pangaea.847824 https://doi.pangaea.de/10.1594/PANGAEA.847824 |
long_lat |
ENVELOPE(-57.350,-57.350,-63.283,-63.283) |
geographic |
Romero |
geographic_facet |
Romero |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
https://dx.doi.org/10.1016/j.quascirev.2014.04.027 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.847824 https://doi.org/10.1016/j.quascirev.2014.04.027 |
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1766143448025399296 |