A 2-decade (1988–2009) record of diatom fluxes in the  Mauritanian coastal upwelling: impact of low-frequency  forcing and a two-step shift in the species composition

Romero, Oscar E.; Ramondenc, Simon; Fischer, Gerhard

doi:https://doi.org/10.5194/bg-18-1873-2021

Articles | Volume 18, issue 5

https://doi.org/10.5194/bg-18-1873-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-18-1873-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 5

Research article

|

18 Mar 2021

Research article |

| 18 Mar 2021

A 2-decade (1988–2009) record of diatom fluxes in the Mauritanian coastal upwelling: impact of low-frequency forcing and a two-step shift in the species composition

Oscar E. Romero, Simon Ramondenc, and Gerhard Fischer

Data sets

Total flux of diatoms and relative composition of diatom groups in trap samples at the CBmeso (= Cape Blanc mesotrophic), off Mauritania O. E. Romero https://doi.org/10.1594/PANGAEA.922784

Short summary

Upwelling intensity along NW Africa varies on the interannual to decadal timescale. Understanding its changes is key for the prediction of future changes of CO₂ sequestration in the northeastern Atlantic. Based on a multiyear (1988–2009) sediment trap experiment at the site CBmeso, fluxes and the species composition of the diatom assemblage are presented. Our data help in establishing the scientific basis for forecasting and modeling future states of this ecosystem and its decadal changes.