Biodiversity: nature's variety, our heritage, our future

Environment Australia

A guide to using and protecting Australia's biodiversity
1998 (Revised 2001)

About the guide

Biodiversity is the web of life – the thin skin of living things, including us, which inhabits the surface of planet Earth. Biodiversity includes humans, animals, plants, fungi and microbes – from dugongs to daisies, toadstools to termites. This variety of life has evolved over hundreds of millions of years. We don’t know how many species live on Earth – scientists have described about 1.8 million. But that’s just a drop in the ocean compared to the estimated 10 to 100 million which probably exist.