According to the South Australia State of the Environment Report 2023, invasive species remain a primary driver of biodiversity decline. Since the 1960s, they have cost the national economy more than $390 billion in management and impacts. The report highlights critical threats on Kangaroo Island, in regional and pastoral areas, and on Country. It also found there had been little progress on reducing the abundance or distribution of most key invasive species. And the number of new reported incursions had increased.
In South Australia and across Australia, invasive species have been the major driver of animal extinctions. Since 1788, Australia has averaged more than 1 extinction every 3 years. Invasive species have been a primary driver (>30% contribution) in about two-thirds of these, including for more than 80% of vertebrate animal losses.
This document outlines the Invasive Species Council’s priorities for the next South Australian government. With even a modest funding increase, the next government can strategically tackle the state’s most difficult invasive species challenges and lead the nation in addressing the primary cause of extinctions.

Key priorities include:
A legacy for Kangaroo Island: an ambitious opportunity for island conservation to establish and maintain a Wildlife haven.
Priority invasive species: urgent action to prevent species from becoming unmanageable or to eradicate populations while it is still possible.
Care for Country: support for Indigenous-led and community efforts to protect land and wildlife from feral animals and weeds. This leverages traditional knowledge and modern science to ensure healthier ecosystems and cultural continuity.
Invest and innovate: implementing regulatory and funding reforms to improve how we tackle invasive species.
Protected areas: our state parks require adequate resourcing to manage invasive species and maintain ecosystem health.
Landscape reforms: ensuring strong landscape boards across the state.