High-resolution paleoproductivity records of sediment core GeoB2107-3, supplement to: Pereira, Lígia Sauaya; Arz, Helge Wolfgang; Pätzold, Jürgen; Portilho-Ramos, Rodrigo Costa (2018): Productivity evolution in the South Brazilian Bight during the last 40,000 years. Paleoceanography and Paleoclimatology, 33(12), 1339-1356
Marine productivity largely controls the oceanic uptake of atmospheric carbon dioxide and contributed to the global climate changes that led to the termination of the last glacial cycle. Past changes in marine productivity were presumably associated with disturbances in the Atlantic meridional overt...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
PANGAEA - Data Publisher for Earth & Environmental Science
2018
|
Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.893334 https://doi.pangaea.de/10.1594/PANGAEA.893334 |
id |
ftdatacite:10.1594/pangaea.893334 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.1594/pangaea.893334 2023-05-15T18:00:43+02:00 High-resolution paleoproductivity records of sediment core GeoB2107-3, supplement to: Pereira, Lígia Sauaya; Arz, Helge Wolfgang; Pätzold, Jürgen; Portilho-Ramos, Rodrigo Costa (2018): Productivity evolution in the South Brazilian Bight during the last 40,000 years. Paleoceanography and Paleoclimatology, 33(12), 1339-1356 Pereira, Lígia Sauaya Arz, Helge Wolfgang Pätzold, Jürgen Portilho-Ramos, Rodrigo Costa 2018 application/zip https://dx.doi.org/10.1594/pangaea.893334 https://doi.pangaea.de/10.1594/PANGAEA.893334 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/2018pa003406 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Center for Marine Environmental Sciences MARUM Geosciences, University of Bremen GeoB article Supplementary Collection of Datasets Collection 2018 ftdatacite https://doi.org/10.1594/pangaea.893334 https://doi.org/10.1029/2018pa003406 2022-02-09T12:04:35Z Marine productivity largely controls the oceanic uptake of atmospheric carbon dioxide and contributed to the global climate changes that led to the termination of the last glacial cycle. Past changes in marine productivity were presumably associated with disturbances in the Atlantic meridional overturning circulation (AMOC). In the South Atlantic, however, the evolution of marine productivity throughout the last glacial–interglacial cycle is still poorly constrained mainly due to the scarcity of records with high temporal resolution. Here we present high‐resolution records of paleoproductivity and upper‐water‐column properties from the western subtropical South Atlantic covering the last 40,000 years. Our records are based on faunal and stable oxygen isotopic analyses of planktonic foraminifera from a marine sediment core collected from an upwelling region off southeastern South America (27°S). We used the relative abundance of eutrophic planktonic foraminifera (i.e., Globigerinita glutinata and Globigerina bulloides) as proxies of primary productivity. Our findings reveal, for the first time, enhanced primary productivity during Heinrich Stadials along the last glacial, when the AMOC showed reduced strength. Additionally, our results reveal decreased primary productivity over the Last Glacial Maximum, a period of markedly lower sea level; and the Younger Dryas, when the AMOC showed only moderate reductions. The most outstanding productivity decline, however, is depicted at the onset of the Holocene, when the AMOC recovers its strength. We hypothesize that the observed changes were triggered by the dynamics of the Brazil Current primarily driven by disturbances in the AMOC. Article in Journal/Newspaper Planktonic foraminifera DataCite Metadata Store (German National Library of Science and Technology) Ramos ENVELOPE(-59.700,-59.700,-62.500,-62.500) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Center for Marine Environmental Sciences MARUM Geosciences, University of Bremen GeoB |
spellingShingle |
Center for Marine Environmental Sciences MARUM Geosciences, University of Bremen GeoB Pereira, Lígia Sauaya Arz, Helge Wolfgang Pätzold, Jürgen Portilho-Ramos, Rodrigo Costa High-resolution paleoproductivity records of sediment core GeoB2107-3, supplement to: Pereira, Lígia Sauaya; Arz, Helge Wolfgang; Pätzold, Jürgen; Portilho-Ramos, Rodrigo Costa (2018): Productivity evolution in the South Brazilian Bight during the last 40,000 years. Paleoceanography and Paleoclimatology, 33(12), 1339-1356 |
topic_facet |
Center for Marine Environmental Sciences MARUM Geosciences, University of Bremen GeoB |
description |
Marine productivity largely controls the oceanic uptake of atmospheric carbon dioxide and contributed to the global climate changes that led to the termination of the last glacial cycle. Past changes in marine productivity were presumably associated with disturbances in the Atlantic meridional overturning circulation (AMOC). In the South Atlantic, however, the evolution of marine productivity throughout the last glacial–interglacial cycle is still poorly constrained mainly due to the scarcity of records with high temporal resolution. Here we present high‐resolution records of paleoproductivity and upper‐water‐column properties from the western subtropical South Atlantic covering the last 40,000 years. Our records are based on faunal and stable oxygen isotopic analyses of planktonic foraminifera from a marine sediment core collected from an upwelling region off southeastern South America (27°S). We used the relative abundance of eutrophic planktonic foraminifera (i.e., Globigerinita glutinata and Globigerina bulloides) as proxies of primary productivity. Our findings reveal, for the first time, enhanced primary productivity during Heinrich Stadials along the last glacial, when the AMOC showed reduced strength. Additionally, our results reveal decreased primary productivity over the Last Glacial Maximum, a period of markedly lower sea level; and the Younger Dryas, when the AMOC showed only moderate reductions. The most outstanding productivity decline, however, is depicted at the onset of the Holocene, when the AMOC recovers its strength. We hypothesize that the observed changes were triggered by the dynamics of the Brazil Current primarily driven by disturbances in the AMOC. |
format |
Article in Journal/Newspaper |
author |
Pereira, Lígia Sauaya Arz, Helge Wolfgang Pätzold, Jürgen Portilho-Ramos, Rodrigo Costa |
author_facet |
Pereira, Lígia Sauaya Arz, Helge Wolfgang Pätzold, Jürgen Portilho-Ramos, Rodrigo Costa |
author_sort |
Pereira, Lígia Sauaya |
title |
High-resolution paleoproductivity records of sediment core GeoB2107-3, supplement to: Pereira, Lígia Sauaya; Arz, Helge Wolfgang; Pätzold, Jürgen; Portilho-Ramos, Rodrigo Costa (2018): Productivity evolution in the South Brazilian Bight during the last 40,000 years. Paleoceanography and Paleoclimatology, 33(12), 1339-1356 |
title_short |
High-resolution paleoproductivity records of sediment core GeoB2107-3, supplement to: Pereira, Lígia Sauaya; Arz, Helge Wolfgang; Pätzold, Jürgen; Portilho-Ramos, Rodrigo Costa (2018): Productivity evolution in the South Brazilian Bight during the last 40,000 years. Paleoceanography and Paleoclimatology, 33(12), 1339-1356 |
title_full |
High-resolution paleoproductivity records of sediment core GeoB2107-3, supplement to: Pereira, Lígia Sauaya; Arz, Helge Wolfgang; Pätzold, Jürgen; Portilho-Ramos, Rodrigo Costa (2018): Productivity evolution in the South Brazilian Bight during the last 40,000 years. Paleoceanography and Paleoclimatology, 33(12), 1339-1356 |
title_fullStr |
High-resolution paleoproductivity records of sediment core GeoB2107-3, supplement to: Pereira, Lígia Sauaya; Arz, Helge Wolfgang; Pätzold, Jürgen; Portilho-Ramos, Rodrigo Costa (2018): Productivity evolution in the South Brazilian Bight during the last 40,000 years. Paleoceanography and Paleoclimatology, 33(12), 1339-1356 |
title_full_unstemmed |
High-resolution paleoproductivity records of sediment core GeoB2107-3, supplement to: Pereira, Lígia Sauaya; Arz, Helge Wolfgang; Pätzold, Jürgen; Portilho-Ramos, Rodrigo Costa (2018): Productivity evolution in the South Brazilian Bight during the last 40,000 years. Paleoceanography and Paleoclimatology, 33(12), 1339-1356 |
title_sort |
high-resolution paleoproductivity records of sediment core geob2107-3, supplement to: pereira, lígia sauaya; arz, helge wolfgang; pätzold, jürgen; portilho-ramos, rodrigo costa (2018): productivity evolution in the south brazilian bight during the last 40,000 years. paleoceanography and paleoclimatology, 33(12), 1339-1356 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2018 |
url |
https://dx.doi.org/10.1594/pangaea.893334 https://doi.pangaea.de/10.1594/PANGAEA.893334 |
long_lat |
ENVELOPE(-59.700,-59.700,-62.500,-62.500) |
geographic |
Ramos |
geographic_facet |
Ramos |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
https://dx.doi.org/10.1029/2018pa003406 |
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.893334 https://doi.org/10.1029/2018pa003406 |
_version_ |
1766169920170622976 |