Regional and global impact of CO2 uptake in the Benguela Upwelling System through preformed nutrients
Eastern Boundary Upwelling Systems (EBUS) are highly productive ecosystems. However, being poorly sampled and represented in global models, their role as atmospheric CO2 sources and sinks remains elusive. In this work, we present a compilation of shipboard measurements over the past two decades from...
Published in: | Nature Communications |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2023
|
Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/00842/95438/103233.pdf https://archimer.ifremer.fr/doc/00842/95438/103234.pdf https://archimer.ifremer.fr/doc/00842/95438/103235.pdf https://doi.org/10.1038/s41467-023-38208-y https://archimer.ifremer.fr/doc/00842/95438/ |
id |
ftarchimer:oai:archimer.ifremer.fr:95438 |
---|---|
record_format |
openpolar |
spelling |
ftarchimer:oai:archimer.ifremer.fr:95438 2023-12-24T10:25:02+01:00 Regional and global impact of CO2 uptake in the Benguela Upwelling System through preformed nutrients Siddiqui, Claire Rixen, Tim Lahajnar, Niko Van Der Plas, Anja K. Louw, Deon C. Lamont, Tarron Pillay, Keshnee 2023-05 application/pdf https://archimer.ifremer.fr/doc/00842/95438/103233.pdf https://archimer.ifremer.fr/doc/00842/95438/103234.pdf https://archimer.ifremer.fr/doc/00842/95438/103235.pdf https://doi.org/10.1038/s41467-023-38208-y https://archimer.ifremer.fr/doc/00842/95438/ eng eng Springer Science and Business Media LLC https://archimer.ifremer.fr/doc/00842/95438/103233.pdf https://archimer.ifremer.fr/doc/00842/95438/103234.pdf https://archimer.ifremer.fr/doc/00842/95438/103235.pdf doi:10.1038/s41467-023-38208-y https://archimer.ifremer.fr/doc/00842/95438/ info:eu-repo/semantics/openAccess restricted use Nature Communications (2041-1723) (Springer Science and Business Media LLC), 2023-05 , Vol. 14 , N. 1 , P. 2582 (11p.) text Article info:eu-repo/semantics/article 2023 ftarchimer https://doi.org/10.1038/s41467-023-38208-y 2023-11-28T23:51:15Z Eastern Boundary Upwelling Systems (EBUS) are highly productive ecosystems. However, being poorly sampled and represented in global models, their role as atmospheric CO2 sources and sinks remains elusive. In this work, we present a compilation of shipboard measurements over the past two decades from the Benguela Upwelling System (BUS) in the southeast Atlantic Ocean. Here, the warming effect of upwelled waters increases CO2 partial pressure (pCO2) and outgassing in the entire system, but is exceeded in the south through biologically-mediated CO2 uptake through biologically unused, so-called preformed nutrients supplied from the Southern Ocean. Vice versa, inefficient nutrient utilization leads to preformed nutrient formation, increasing pCO2 and counteracting human-induced CO2 invasion in the Southern Ocean. However, preformed nutrient utilization in the BUS compensates with ~22–75 Tg C year−1 for 20–68% of estimated natural CO2 outgassing in the Southern Ocean’s Atlantic sector (~ 110 Tg C year−1), implying the need to better resolve global change impacts on the BUS to understand the ocean’s role as future sink for anthropogenic CO2. Article in Journal/Newspaper Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Southern Ocean Nature Communications 14 1 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
Eastern Boundary Upwelling Systems (EBUS) are highly productive ecosystems. However, being poorly sampled and represented in global models, their role as atmospheric CO2 sources and sinks remains elusive. In this work, we present a compilation of shipboard measurements over the past two decades from the Benguela Upwelling System (BUS) in the southeast Atlantic Ocean. Here, the warming effect of upwelled waters increases CO2 partial pressure (pCO2) and outgassing in the entire system, but is exceeded in the south through biologically-mediated CO2 uptake through biologically unused, so-called preformed nutrients supplied from the Southern Ocean. Vice versa, inefficient nutrient utilization leads to preformed nutrient formation, increasing pCO2 and counteracting human-induced CO2 invasion in the Southern Ocean. However, preformed nutrient utilization in the BUS compensates with ~22–75 Tg C year−1 for 20–68% of estimated natural CO2 outgassing in the Southern Ocean’s Atlantic sector (~ 110 Tg C year−1), implying the need to better resolve global change impacts on the BUS to understand the ocean’s role as future sink for anthropogenic CO2. |
format |
Article in Journal/Newspaper |
author |
Siddiqui, Claire Rixen, Tim Lahajnar, Niko Van Der Plas, Anja K. Louw, Deon C. Lamont, Tarron Pillay, Keshnee |
spellingShingle |
Siddiqui, Claire Rixen, Tim Lahajnar, Niko Van Der Plas, Anja K. Louw, Deon C. Lamont, Tarron Pillay, Keshnee Regional and global impact of CO2 uptake in the Benguela Upwelling System through preformed nutrients |
author_facet |
Siddiqui, Claire Rixen, Tim Lahajnar, Niko Van Der Plas, Anja K. Louw, Deon C. Lamont, Tarron Pillay, Keshnee |
author_sort |
Siddiqui, Claire |
title |
Regional and global impact of CO2 uptake in the Benguela Upwelling System through preformed nutrients |
title_short |
Regional and global impact of CO2 uptake in the Benguela Upwelling System through preformed nutrients |
title_full |
Regional and global impact of CO2 uptake in the Benguela Upwelling System through preformed nutrients |
title_fullStr |
Regional and global impact of CO2 uptake in the Benguela Upwelling System through preformed nutrients |
title_full_unstemmed |
Regional and global impact of CO2 uptake in the Benguela Upwelling System through preformed nutrients |
title_sort |
regional and global impact of co2 uptake in the benguela upwelling system through preformed nutrients |
publisher |
Springer Science and Business Media LLC |
publishDate |
2023 |
url |
https://archimer.ifremer.fr/doc/00842/95438/103233.pdf https://archimer.ifremer.fr/doc/00842/95438/103234.pdf https://archimer.ifremer.fr/doc/00842/95438/103235.pdf https://doi.org/10.1038/s41467-023-38208-y https://archimer.ifremer.fr/doc/00842/95438/ |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Nature Communications (2041-1723) (Springer Science and Business Media LLC), 2023-05 , Vol. 14 , N. 1 , P. 2582 (11p.) |
op_relation |
https://archimer.ifremer.fr/doc/00842/95438/103233.pdf https://archimer.ifremer.fr/doc/00842/95438/103234.pdf https://archimer.ifremer.fr/doc/00842/95438/103235.pdf doi:10.1038/s41467-023-38208-y https://archimer.ifremer.fr/doc/00842/95438/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1038/s41467-023-38208-y |
container_title |
Nature Communications |
container_volume |
14 |
container_issue |
1 |
_version_ |
1786200403347505152 |