In cooperation with an international team, Senckenberg scientists examined the impact of deep-sea mining – such as the extraction of manganese nodules – on the species diversity at the ocean floor. They were able to show that even 26 years after the end of the mining activity a significant loss of ground-dwelling organisms can be registered. Filter-feeding animals are particularly affected – more than two decades after the mining operations, almost 80 percent of the species remain absent. The study was recently published in the scientific journal Biogeosciences.