Articles | Volume 17, issue 2
Clim. Past, 17, 603–614, 2021
https://doi.org/10.5194/cp-17-603-2021
Clim. Past, 17, 603–614, 2021
https://doi.org/10.5194/cp-17-603-2021

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 et al.

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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.