'For example, the DNA identification technique used in forensic and other applications relies on a thermophilic (heat-loving) micro-organism isolated from Yellowstone National Park, USA, and is a multi-billion dollar industry.'

'Current estimates are that we only know of five to 10 percent of the total microbial species on earth,' Stott said.

Some of the species found in the Taupo geothermal systems showed potential for use in new technologies.