Articles | Volume 15, issue 13
Biogeosciences, 15, 4131–4145, 2018

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

Biogeosciences, 15, 4131–4145, 2018

Research article 06 Jul 2018

Research article | 06 Jul 2018

Abyssal plain faunal carbon flows remain depressed 26 years after a simulated deep-sea mining disturbance

Tanja Stratmann et al.

Data sets

Seafloor images from the Peru Basin Disturbance and Colonization (DISCOL) area collected during SO242/2 A. Purser, Y. Marcon, and A. Boetius

Short summary
Extraction of polymetallic nodules will have negative impacts on the deep-sea ecosystem, but it is not known whether the ecosystem is able to recover from them. Therefore, in 1989 a sediment disturbance experiment was conducted in the Peru Basin to mimic deep-sea mining. Subsequently, the experimental site was re-visited 5 times to monitor the recovery of fauna. We developed food-web models for all 5 time steps and found that, even after 26 years, carbon flow in the system differs significantly.
Final-revised paper