dc.contributor.author |
Ryan-Keogh, Thomas J
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|
dc.contributor.author |
Thomalla, Sandy J
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|
dc.contributor.author |
Scheel Monteiro, Pedro M
|
|
dc.contributor.author |
Tagliabue, A
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|
dc.date.accessioned |
2023-05-12T11:28:22Z |
|
dc.date.available |
2023-05-12T11:28:22Z |
|
dc.date.issued |
2023-02 |
|
dc.identifier.citation |
Ryan-Keogh, T.J., Thomalla, S.J., Scheel Monteiro, P.M. & Tagliabue, A. 2023. Multidecadal trend of increasing iron stress in Southern Ocean phytoplankton. <i>Science, 379(6634).</i> http://hdl.handle.net/10204/12778 |
en_ZA |
dc.identifier.issn |
0036-8075 |
|
dc.identifier.issn |
1095-9203 |
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dc.identifier.uri |
DOI: 10.1126/science.abl5237
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|
dc.identifier.uri |
http://hdl.handle.net/10204/12778
|
|
dc.description.abstract |
Southern Ocean primary productivity is principally controlled by adjustments in light and iron limitation, but the spatial and temporal determinants of iron availability, accessibility, and demand are poorly constrained, which hinders accurate long-term projections. We present a multidecadal record of phytoplankton photophysiology between 1996 and 2022 from historical in situ datasets collected by Biogeochemical Argo (BGC-Argo) floats and ship-based platforms. We find a significant multidecadal trend in irradiance-normalized nonphotochemical quenching due to increasing iron stress, with concomitant declines in regional net primary production. The observed trend of increasing iron stress results from changing Southern Ocean mixed-layer physics as well as complex biological and chemical feedback that is indicative of important ongoing changes to the Southern Ocean carbon cycle. |
en_US |
dc.format |
Abstract |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
https://www.science.org/doi/10.1126/science.abl5237 |
en_US |
dc.source |
Science, 379(6634) |
en_US |
dc.subject |
Climate change |
en_US |
dc.subject |
Phytoplankton photophysiology |
en_US |
dc.subject |
Southern Hemisphere climate |
en_US |
dc.subject |
The Southern ocean |
en_US |
dc.title |
Multidecadal trend of increasing iron stress in Southern Ocean phytoplankton |
en_US |
dc.type |
Article |
en_US |
dc.description.pages |
834-840 |
en_US |
dc.description.note |
Copyright © 2023 the authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. Due to licensing restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website: https://www.science.org/doi/10.1126/science.abl5237 |
en_US |
dc.description.cluster |
Smart Places |
en_US |
dc.description.impactarea |
Ocean Systems and Climate |
en_US |
dc.identifier.apacitation |
Ryan-Keogh, T. J., Thomalla, S. J., Scheel Monteiro, P. M., & Tagliabue, A. (2023). Multidecadal trend of increasing iron stress in Southern Ocean phytoplankton. <i>Science, 379(6634)</i>, http://hdl.handle.net/10204/12778 |
en_ZA |
dc.identifier.chicagocitation |
Ryan-Keogh, Thomas J, Sandy J Thomalla, Pedro M Scheel Monteiro, and A Tagliabue "Multidecadal trend of increasing iron stress in Southern Ocean phytoplankton." <i>Science, 379(6634)</i> (2023) http://hdl.handle.net/10204/12778 |
en_ZA |
dc.identifier.vancouvercitation |
Ryan-Keogh TJ, Thomalla SJ, Scheel Monteiro PM, Tagliabue A. Multidecadal trend of increasing iron stress in Southern Ocean phytoplankton. Science, 379(6634). 2023; http://hdl.handle.net/10204/12778. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Ryan-Keogh, Thomas J
AU - Thomalla, Sandy J
AU - Scheel Monteiro, Pedro M
AU - Tagliabue, A
AB - Southern Ocean primary productivity is principally controlled by adjustments in light and iron limitation, but the spatial and temporal determinants of iron availability, accessibility, and demand are poorly constrained, which hinders accurate long-term projections. We present a multidecadal record of phytoplankton photophysiology between 1996 and 2022 from historical in situ datasets collected by Biogeochemical Argo (BGC-Argo) floats and ship-based platforms. We find a significant multidecadal trend in irradiance-normalized nonphotochemical quenching due to increasing iron stress, with concomitant declines in regional net primary production. The observed trend of increasing iron stress results from changing Southern Ocean mixed-layer physics as well as complex biological and chemical feedback that is indicative of important ongoing changes to the Southern Ocean carbon cycle.
DA - 2023-02
DB - ResearchSpace
DP - CSIR
J1 - Science, 379(6634)
KW - Climate change
KW - Phytoplankton photophysiology
KW - Southern Hemisphere climate
KW - The Southern ocean
LK - https://researchspace.csir.co.za
PY - 2023
SM - 0036-8075
SM - 1095-9203
T1 - Multidecadal trend of increasing iron stress in Southern Ocean phytoplankton
TI - Multidecadal trend of increasing iron stress in Southern Ocean phytoplankton
UR - http://hdl.handle.net/10204/12778
ER -
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en_ZA |
dc.identifier.worklist |
26618 |
en_US |