Biodiversity

The changes that have occurred to our natural environment affect the richness and diversity of the species and ecosystems found in NSW and their ability to survive into the future

Common Brown (Heteronympha merope) butterfly sitting on blade of grass

The topics in this theme describe how the native species and ecosystems of NSW are faring presently and the effects of introduced species.

Biodiversity overview

For an overview of this theme, including Aboriginal perspectives click on the heading.

To read more, go to topic .

Threatened Species

The number of species considered at risk of extinction continues to rise.

To read more, go to topic .

Number of threatened species

1,043

species are listed as threatened in NSW as at December 2020 (18 more species than in the last report)

Native Fauna

The overall diversity and richness of native species and communities in NSW remains under threat of further decline.

To read more, go to topic .

Survival of native vertebrate species

62%

of native terrestrial vertebrate species are not currently listed as threatened, but this is worsening

Invasive Species

Many invasive species are widespread across NSW. Once established, they are difficult to control.

To read more, go to topic .

Pest animals and weeds threatened more than

70%

of threatened species and endangered ecological communities in NSW