Blue Lake, one of the largest lakes on North Stradbroke Island, southeast of Brisbane has been relatively unaffected by the impact of humans and changes in climate over the past 7000 years.
Blue Lake is unusual because of its clarity despite its more than 10 metre depth.
The findings could affect whether the freshwater aquifer of North Stradbroke Island is used as a source of fresh water for the mainland.
Findings suggest Blue Lake has been an important climate “refuge” for the freshwater organisms of the region, and is in the same condition now as it was 7500 years ago.
Read more at University of Adelaide