Articles | Volume 17, issue 10
https://doi.org/10.5194/bg-17-2767-2020
https://doi.org/10.5194/bg-17-2767-2020
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

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Cited articles

Berner, R. A.: Early Diagenesis – A Theoretical Approach, Princeton University Press, Princeton, New Jersey, 241 pp., 1980. 
Bluhm, H.: Re-establishment of an abyssal megabenthic community after experimental physical disturbance of the seafloor, Deep-Sea Res. Pt. II, 48, 3841–3868, https://doi.org/10.1016/S0967-0645(01)00070-4, 2001. 
Boetius, A.: RV SONNE Cruise Report SO242-2: JPI OCEANS Ecological Aspects of Deep-Sea Mining, DISCOL Revisited, 2015. 
Borowski, C. and Thiel, H.: Deep-sea macrofaunal impacts of a large-scale physical disturbance experiment in the Southeast Pacific, Deep-Sea Res. Pt. II, 45, 55–81, https://doi.org/10.1016/S0967-0645(97)00073-8, 1998. 
Borowski, C.: Physically disturbed deep-sea macrofauna in the Peru Basin, southeast Pacific, revisited 7 years after the experimental impact, Deep-Sea Res. Pt. II, 48, 3809–3839, 2001. 
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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.
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