Assessing the temporal scale of deep-sea mining impacts on sediment biogeochemistry

Haffert, Laura; Haeckel, Matthias; de Stigter, Henko; Janssen, Felix

doi:https://doi.org/10.5194/bg-17-2767-2020

Articles | Volume 17, issue 10

https://doi.org/10.5194/bg-17-2767-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Assessing environmental impacts of deep-sea mining...

https://doi.org/10.5194/bg-17-2767-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 10

Research article

|

26 May 2020

Research article |

| 26 May 2020

Assessing the temporal scale of deep-sea mining impacts on sediment biogeochemistry

Laura Haffert, Matthias Haeckel, Henko de Stigter, and Felix Janssen

Data sets

Geochemistry of sediment cores during SONNE cruises SO242/1 and SO242/2 at the DISCOL area, Peru Basin Matthias Haeckel https://doi.org/10.1594/PANGAEA.905377

Radionuclide data (total 210Pb) measured on sediment multi cores during SONNE cruise SO242/1 at the DISCOL area, Peru Basin Henko de Stigter https://doi.org/10.1594/PANGAEA.905442

Radionuclide 210Pb and 226Ra data measured on sediment cores during SONNE cruise SO242/1 Henko de Stigter https://doi.org/10.1594/PANGAEA.905443

Short summary

Deep-sea mining for polymetallic nodules is expected to have severe environmental impacts. Through prognostic modelling, this study aims to provide a holistic assessment of the biogeochemical recovery after a disturbance event. It was found that the recovery strongly depends on the impact type; e.g. complete removal of the surface sediment reduces seafloor nutrient fluxes over centuries.