An Australian mining firm wants to turn a Nevada valley into a quarry for lithium and boron – key elements for green technologies – but a rare plant may stand in its way. Researchers say that biodiversity and clean energy should not be in opposition.
The company, Ioneer, says the quarry in Rhyolite Ridge valley would be the first US quarry of its kind, able to supply lithium for 400,000 electric car batteries a year and boron to power wind turbines. But soil containing these elements is also the perfect environment for Tiehm’s buckwheat (Eriogonum tiehmii), a plant that looks like a pile of leaves. When it blooms, it could be the dandelion’s fuzzy cousin.
There are only about 40,000 specimens of the buckwheat, and its namesake, Arnold Tiehm at the University of Nevada, Reno, says its closest relative is more than 80 kilometres away.
Most of the buckwheat’s natural home lies in the area mapped to be dug up for the quarry. “That puts the buckwheat on a one-way path to extinction,” says Patrick Donnelly at the Center for Biological Diversity (CBD) in Nevada. Ioneer will remove 65 per cent of the buckwheat’s population if the first planned quarry goes ahead, the company confirmed to New Scientist.
Although rare, the buckwheat isn’t yet considered endangered, but that may change. Following a petition by the CBD, the US Fish and Wildlife Service announced in July that the plant is both valuable enough and under sufficient threat to warrant a year-long review to decide whether to list the plant under the US Endangered Species Act. The listing would