Sedimentary organic matter signature hints at the phytoplankton-driven biological carbon pump  in the central Arabian Sea

Pandey, Medhavi; Biswas, Haimanti; Birgel, Daniel; Burdanowitz, Nicole; Gaye, Birgit

doi:https://doi.org/10.5194/bg-21-4681-2024

Articles | Volume 21, issue 20

https://doi.org/10.5194/bg-21-4681-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-21-4681-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 20

Research article

|

29 Oct 2024

Research article |

| 29 Oct 2024

Sedimentary organic matter signature hints at the phytoplankton-driven biological carbon pump in the central Arabian Sea

Medhavi Pandey, Haimanti Biswas, Daniel Birgel, Nicole Burdanowitz, and Birgit Gaye

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https://doi.org/10.5194/bg-21-4681-2024-supplement

Data sets

Understanding biological carbon pump in the central Arabian Sea using phytoplankton biomarkers and diatom frustules from surface sediments Medhavi Pandey et al. https://doi.org/10.17632/xm4nxzdxb2.1

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Short summary

We analysed sea surface temperature (SST) proxy and plankton biomarkers in sediments that accumulate sinking material signatures from surface waters in the central Arabian Sea (21°–11° N, 64° E), a tropical basin impacted by monsoons. We saw a north–south SST gradient, and the biological proxies showed more organic matter from larger algae in the north. Smaller algae and zooplankton were more numerous in the south. These trends were related to ocean–atmospheric processes and oxygen availability.