Articles | Volume 17, issue 18
Biogeosciences, 17, 4663–4679, 2020
https://doi.org/10.5194/bg-17-4663-2020

Special issue: Ocean deoxygenation: drivers and consequences – past, present...

Biogeosciences, 17, 4663–4679, 2020
https://doi.org/10.5194/bg-17-4663-2020

Research article 25 Sep 2020

Research article | 25 Sep 2020

Sediment release of dissolved organic matter to the oxygen minimum zone off Peru

Alexandra N. Loginova et al.

Data sets

Organic matter sediment release during METOR cruise M136: BIGO data Alexandra Loginova and Anja Engel https://doi.pangaea.de/10.1594/PANGAEA.913476

Organic matter sediment release during METOR cruises M136 and M137: Multicorer data Alexandra Loginova and Anja Engel https://doi.pangaea.de/10.1594/PANGAEA.913477

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Short summary
We measured dissolved organic carbon (DOC), nitrogen (DON) and matter (DOM) optical properties in pore waters and near-bottom waters of the eastern tropical South Pacific off Peru. The difference between diffusion-driven and net fluxes of DOC and DON and qualitative changes in DOM optical properties suggested active microbial utilisation of the released DOM at the sediment–water interface. Our results suggest that the sediment release of DOM contributes to microbial processes in the area.
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