Biogeosciences
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Articles | Volume 23, issue 2
Articles | Volume 23, issue 2
https://doi.org/10.5194/bg-23-831-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-831-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 2
Research article
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29 Jan 2026
Research article | Highlight paper |  | 29 Jan 2026

Assessment of the Cape Blanc (northwest Africa) upwelling ecosystem response to recent climate change, using wavelet analyses on dinoflagellate cyst export

Surya Eldo V. Roza, Runa T. Reuter, Jan-Berend W. Stuut, Gerard J. M. Versteegh, Vera Pospelova, Iria García-Moreiras, and Karin A. F. Zonneveld

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Editorial statement
This study provides rare, high-resolution insight into how a climatically sensitive upwelling ecosystem responds to recent climate variability, based on an exceptional 18-year marine sediment trap record. By combining wavelet analyses with long-term observations of dinoflagellate cyst export, upwelling winds, and dust input, it reveals distinct temporal phases and demonstrates the ecosystem’s strong sensitivity to climate-driven changes in wind dynamics.
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Short summary
This study examined the cycle variability in records of a plankton group remnant (dinoflagellate cysts), atmospheric, and oceanic factors off Cape Blanc, Northwest Africa. The result showed changes in the cycles of the plankton, upwelling winds, and Saharan dust records from 2003 to 2020. These changes were divided into three phases, coinciding with changes in the plankton assemblage. Our results showed that local climate change can influence the dynamics and composition of marine ecosystems.
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