The majority of the growth in demand has been met by Indonesia, which has been bulldozing rainforests to get at the ore beneath. Mining the seabed would be more environmentally friendly
to which it has been granted access. That triggered a requirement for theto produce rules governing commercial exploitation of the deposits. If those regulations are not ready by July 9th—and it looks like they will not be—then the’s plan is about as straightforward as underwater mining can be. Its first target is a patch of the’s boss, estimates there are about 3.8m tonnes of nickel in the area.
As with mining on the land, extracting nickel from the sea floor will damage the surrounding ecosystem. Although the’s robot will destroy any organisms on the seabed it drives across, as well as creatures that live on the nodules it collects. It will also kick up plumes of sediment, some of which will drift onto nearby organisms and kill them .
But it is not enough to simply weigh the biomass in each ecosystem. The amount of nickel that can be produced per hectare is also relevant. The 2.5m hectares thathopes to exploit is expected to yield about 3.8m tonnes of nickel, or about 1.5 tonnes per hectare. All that makes a very rough comparison possible. Around 13 kilograms of biomass would be lost for every tonne ofnickel mined. Each tonne mined on Sulawesi would destroy around 450kg of plants alone—plus an unknown amount of animal biomass, too.
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