http://www.abc.net.au/news/2013-06-0...in-que/4732122
Climate change researchers awed by pristine Blue Lake on North Stradbroke Island
The World Today
By Rebecca Brice

Updated Thu Jun 6, 2013 10:36am AEST

Key points
  • Blue Lake is on North Stradbroke Island, off the coast of Brisbane
  • Scientists found lake's chemistry has changed very little over 7,500 years
  • Study looked at fossil pollen and fossil algae as proxies for environmental change
  • Lake drains into a swamp and is refreshed by an aquifer, so does not evaporate or become more saline