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The 2021 independent State of Environment Report has highlighted that invasive species are identified as the most prevalent threat to Australian wildlife and are the primary cause of extinction events. The report warns of the compounding and devastating impact of multiple threats to Australia’s environment.

A new report, Fighting Plagues and Predators: Australia’s Path to a Pest and Weed-Free Future [PDF,  12 MB], reveals the environment is facing a "sliding doors" moment, with two possible futures for Australia, depending on the decisions made today. It highlights a looming wave of new extinctions and outlines two futures for Australia, one based on an unsustainable ‘business as usual’ approach and the other based on implementing targeted actions that will help save our unique biodiversity. The report pegs the conservative cost of damage caused by invasive species in Australia – predominantly weeds, feral cats, rabbits and fire ants – at $390 billion over the past six decades and around $25 billion each year and growing.

New research by the Threatened Species Recovery Hub has shown that invasive or pest species are a problem for 1,257 threatened species in Australia, or about four out of five species. The research which has been published in the scientific journal Pacific Conservation Biology also identified the top ten invasive species based on how many threatened species they impact. Lead researcher Stephen Kearney from the University of Queensland said many people may be surprised at which species top the list. “Rabbits, a plant root disease and feral pigs are the top three pest species impacting Australia’s threatened species,” Mr Kearney said.

The Australian Plant Biosecurity Science Foundation was established to follow the Plant Biosecurity Cooperative Research Centre (PBCRC) which finished operations in June 2018, supported with unspent funds from PBCRC.

Provides news updates and other resources. See also: Avian Influenza Surveillance

See also: Wildlife Diseases in Alberta for more fact sheets

This resource is to assist Pacific island invasive species practitioners in their battle against invasive species. It includes the Pacific Invasive Species Battler Series on common Pacific topical issues and an option to see what new resources have been added lately. You can also search for documents, case-studies, reports and other media by selecting the appropriate "Guidelines" theme or objective, or use the general search function by selecting tags related to the resources.

Invasive species pose a threat across the United States and its territories, but they can be especially challenging for the U.S. South Pacific territory of American Samoa. Among the invasive pests menacing the territory are several non-native fire ant species. 

The Be Plant Wise campaign, launched by Defra and the Scottish Government, is designed to raise awareness among gardeners, pond owners and retailers of the damage caused by invasive aquatic plants and to encourage the public to dispose of these plants correctly. We have developed resources with advice for gardeners and pond owners and are working closely with retailers of aquatic plants to provide information in stores. These pages contain the detailed information you need to Be Plant Wise.

Restoring islands through the removal of non-native invasive mammals is a powerful biodiversity conservation tool. This new study now shows that human communities on islands could benefit from restoration actions, which can potentially reduce or eliminate the burden of diseases transmitted to people by invasive species. Simply put, removal of invasive species can benefit human health in addition to ecological health.

Bioinvasão Brasil is a digital platform developed with the objective of making available records of invasive alien species in Brazil. Special Note: In Portuguese.

The global increase in biological invasions is placing growing pressure on the management of ecological and economic systems. However, the effectiveness of current management expenditure is difficult to assess due to a lack of standardised measurement across spatial, taxonomic and temporal scales.

Research Highlights:

• Since 1960, management for biological invasions totalled at least $95.3 billion.
• Damage costs from invasions were substantially higher ($1130.6 billion).
• Pre-invasion management spending is 25-times lower than post-invasion.
• Management and damage costs are increasing rapidly over time.
• Proactive management substantially reduces future costs at the trillion-$ scale.

The Invasive Species Programme (ISP) aims to detect invasive species; assess the risk these species pose to South Africa and attempt eradication of high risk species with limited distribution.