Climate of the Past
Climate of the Past
CP
Articles | Volume 17, issue 2
Articles | Volume 17, issue 2
https://doi.org/10.5194/cp-17-603-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-17-603-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 2
Research article
 | 
09 Mar 2021
Research article |  | 09 Mar 2021

Nutrient utilization and diatom productivity changes in the low-latitude south-eastern Atlantic over the past 70 ka: response to Southern Ocean leakage

Katharine Hendry, Oscar Romero, and Vanessa Pashley

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Short summary
Productive eastern boundary upwelling systems (EBUs) are characterized by abundant siliceous algae and diatoms, and they play a key role in carbon fixation. Understanding past shifts in diatom production is critical for predicting the impact of future climate change. We combine existing sediment archives from the Benguela EBU with new diatom isotope analyses and modelling to reconstruct late Quaternary silica cycling, which we suggest depends on both upwelling intensity and surface utilization.
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