Articles | Volume 17, issue 4
Biogeosciences, 17, 1113–1131, 2020
https://doi.org/10.5194/bg-17-1113-2020

Special issue: Assessing environmental impacts of deep-sea mining...

Biogeosciences, 17, 1113–1131, 2020
https://doi.org/10.5194/bg-17-1113-2020

Research article 28 Feb 2020

Research article | 28 Feb 2020

Impact of small-scale disturbances on geochemical conditions, biogeochemical processes and element fluxes in surface sediments of the eastern Clarion–Clipperton Zone, Pacific Ocean

Jessica B. Volz et al.

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Cited articles

Aleynik, D., Inall, M. E., Dale, A., and Vink, A.: Impact of remotely generated eddies on plume dispersion at abyssal mining sites in the Pacific, Sci. Rep.-UK, 7, 1–14, https://doi.org/10.1038/s41598-017-16912-2, 2017. 
Anderson, R. F., Sachs, J. P., Fleisher, M. Q., Allen, K. A., Yu, J., Koutavas, A., and Jaccard, S. L.: Deep-sea oxygen depletion and ocean carbon sequestration during the last ice age, Global Biogeochem. Cy., 33, 301–317, https://doi.org/10.1029/2018GB006049, 2019. 
Berger, W. H.: Deep-sea sedimentation, in: The Geology of Continental Margins, edited by: Burk, C. A. and Drake, C. L., Springer, New York, 213–241, 1974. 
Berner, R. A.: Early Diagenesis: A Theoretical Approach, Princeton University Press, Princeton, 1–24, 1980. 
Berner, R. A.: A new geochemical classification of sedimentary environments, J. Sediment. Petrol., 51, 359–365, 1981. 
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Short summary
Potential future deep-sea mining of polymetallic nodules at the seafloor is expected to severely harm the marine environment. However, the consequences on deep-sea ecosystems are still poorly understood. This study on surface sediments from man-made disturbance tracks in the Pacific Ocean shows that due to the removal of the uppermost sediment layer and thereby the loss of organic matter, the geochemical system in the sediments is disturbed for millennia before reaching a new equilibrium.
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