Environmental impacts and risks of deep-sea mining
2018 - 2022
In the second project phase of MiningImpact, we will extend our previous work towards three major research interests concerning deep-sea mining: (1) the larger scale environmental impact caused by the suspended sediment plume, (2) the regional connectivity of species and the biodiversity of biological assemblages and their resilience to impacts, and (3) the integrated effects on ecosystem functions, such as the benthic foodweb and biogeochemical processes. In this context, key objectives of the project are:
To develop and test monitoring concepts and strategies for deep-sea mining operations
To develop standardization procedures for monitoring and definitions for indicators of a
good environmental status
To investigate potential mitigation measures, such as spatial management plans of
mining operations and means to facilitate ecosystem recovery
To develop sound methodologies to assess the environmental risks and estimate
benefits, costs and risks
To explore how uncertainties in the knowledge of impacts can be implemented into
appropriate regulatory framework
While the first project phase could investigate only experimental and/or rather small-scale disturbances of the seafloor, in the second phase a comprehensive monitoring program will be devoted to the industrial test of the prototype nodule collector system of the Belgian contractor DEME-GSR. The test intends to harvest nodules in approx. 300x300m2 large areas of the seabed in the Belgian and the German contract areas of the CCZ. Thus, MiningImpact 2 will collect independent scientific information on the environmental impacts of this operation. Here, the primary focus is on constraining and quantifying the temporal dynamics and characteristics of the suspended sediment plume, the spatial footprint of the deposited sediment blanket, and the induced effects on the abyssal ecosystem. Thus, MiningImpact 2 will be able to further close existing knowledge gaps and reduce uncertainties on the environmental impacts of deep-sea mining of polymetallic nodules.
National Funding through JPI Oceans
Start Date: 08-2018
End Date: 02-2022
Cruise: SO268 and MANGAN 2021
The JPI Oceans Pilot Action "Ecological Aspects of Deep-Sea Mining" assesses the ecological impacts which could arise from commercial mining activities in the deep-sea. Core of the project are three expeditions visiting several nodule license areas and a protected area in the Clarion Clipperton Zone (CCZ) as well as the disturbance and recolonization experiment (DISCOL) in the Peru Basin, which was conducted 26 years ago.
For information about 'Phase 1' of the MiningImpact project see here!
SO295 - BLOG
Please find all updates on the ongoing SO295 expedition here on oceanblogs.org.
2nd prize in JPI Oceans
Art and Photo Awards
Autun Purser (AWI) wins the 2nd prize of the JPI-Oceans Art and Photo Awards in the JPI-Oceans project category. Congratulations, Autun! Please find the winning entries here.
Stakeholder Event and Final Project Meeting 2022
The final Stakeholder Event and project meeting of the 2nd phase of MiningImpact took place on February 1-2, 2022 (via ZOOM). The presentations are now available on the event page.
The video interviews with the MiningImpact scientists filmed onboard expedition SO268 (2019) are finally online. Learn more about their work on board here! You can also find new videos showing the disturbed and undisturbed seafloor from expeditions SO239 and SO242 (both 2015).
Mineral Resources of the Deep Sea - Formation, Potential and Risks (brochure)