Managing new pests in South Australia – what’s new?

Ecologist Nicki de Preu takes a look at changes to South Australia’s declared pests list and a new policy on new and emerging pests.
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Red-whiskered bulbuls are a serious pest bird that damage fruit crops, spread weeds and compete with native bird species. Photo: Creepanta | CC BY-SA 4.0
Red-whiskered bulbuls are a serious pest bird that damage fruit crops, spread weeds and compete with native bird species. Photo: Creepanta | CC BY-SA 4.0

Preventing the establishment of new pests and containing emerging pests at a state and territory level is key to protecting Australia’s precious native plants and animals from invasive species, writes Nicki de Preu, an ecologist with the Nature Conservation Society of South Australia.

The South Australian government is updating its list of pest animals that are deliberately or accidentally released and are a serious threat to primary industry, the natural environment and public safety. No introduced animal can be released into the wild in South Australia.

The government is also drafting a New and Emerging Introduced Animal Policy.

The updates to South Australia’s declared pests list should keep it current and prevent the establishment of new pest animals in South Australia. The new policy regulates the movement and keeping of introduced animals to prevent incursions into the wild and addresses how new and emerging pest animals are managed.

Some changes to the declared list are administrative, such as taxonomic updates to scientific names and the addition of animals now present in Australia. Other changes are more substantive and include the addition of animals into Class 1 under the Natural Resources Management Act, which includes introduced animals of high invasive potential that are not yet established in South Australia, such as the Red-whiskered Bulbul.

Other changes included transfer of some animals to a class with increased restrictions in terms of the movement, possession or sale of animals or their deliberate release in to the wild.

The draft policy focuses on prevention, early detection and eradication as the most cost-effective ways to control pest species. With the right resources early intervention can achieve better outcomes, but must include co-ordinated action with all stakeholders to prevent and manage incursions of new and emerging introduced animals.

Biosecurity SA and regional Natural Resource Management boards need to take a lead role.

Changes for the good

The Nature Conservation Society of South Australia recently reviewed the proposed changes and are confident they will improve how new and emerging introduced animals are managed in South Australia.

However, we strongly recommend the draft policy acknowledges that climate change will have a major impact on current and future distribution and abundance of pest animals.

We also recommend the policy provide further context about how the policy links to other related state and national policies that guide biosecurity responses (for example the Intergovernmental Agreement on Biosecurity to which the South Australian Government is a signatory).

A key area for the management of new and emerging pest animals proposed through the policy is the development and implementation of management strategies to reduce the number of incursions or number of introduced animals that establish populations in the wild.

We support this approach but strongly recommended the policy acknowledge the need for adequate resourcing to implement these strategies if they are to be effective.

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    Dear Project Team,

    [YOUR PERSONALISED MESSAGE WILL APPEAR HERE.] 

    I support the amendment to the Kosciuszko National Park Wild Horse Heritage Management Plan to allow our incredible National Parks staff to use aerial shooting as one method to rapidly reduce feral horse numbers. I want to see feral horse numbers urgently reduced in order to save the national park and our native wildlife that live there.

    The current approach is not solving the problem. Feral horse numbers have rapidly increased in Kosciuszko National Park to around 18,000, a 30% jump in just the past 2 years. With the population so high, thousands of feral horses need to be removed annually to reduce numbers and stop our National Park becoming a horse paddock. Aerial shooting, undertaken humanely and safely by professionals using standard protocols, is the only way this can happen.

    The government’s own management plan for feral horses states that ‘if undertaken in accordance with best practice, aerial shooting can have the lowest negative animal welfare impacts of all lethal control methods’.

    This humane and effective practice is already used across Australia to manage hundreds of thousands of feral animals like horses, deer, pigs, and goats.

    Trapping and rehoming of feral horses has been used in Kosciuszko National Park for well over a decade but has consistently failed to reduce the population, has delayed meaningful action and is expensive. There are too many feral horses in the Alps and not enough demand for rehoming for it to be relied upon for the reduction of the population.

    Fertility control as a management tool is only effective for a small, geographically isolated, and accessible population of feral horses where the management outcome sought is to maintain the population at its current size. It is not a viable option to reduce the large and growing feral horse population in the vast and rugged terrain of Kosciuszko National Park.

    Feral horses are trashing and trampling our sensitive alpine ecosystems and streams, causing the decline and extinction of native animals. The federal government’s Threatened Species Scientific Committee has stated that feral horses ‘may be the crucial factor that causes final extinction’ for 12 alpine species.

    I recognise the sad reality that urgent and humane measures are necessary to urgently remove the horses or they will destroy the Snowies and the native wildlife that call the mountains home. I support a healthy national park where native species like the Corroboree Frog and Mountain Pygmy Possum can thrive.

    Kind regards,
    [Your name]
    [Your email address]
    [Your postcode]


    Dear Project Team,

    [YOUR PERSONALISED MESSAGE WILL APPEAR HERE.] 

    I support the amendment to the Kosciuszko National Park Wild Horse Heritage Management Plan to allow our incredible National Parks staff to use aerial shooting as one method to rapidly reduce feral horse numbers. I want to see feral horse numbers urgently reduced in order to save the national park and our native wildlife that live there.

    The current approach is not solving the problem. Feral horse numbers have rapidly increased in Kosciuszko National Park to around 18,000, a 30% jump in just the past 2 years. With the population so high, thousands of feral horses need to be removed annually to reduce numbers and stop our National Park becoming a horse paddock. Aerial shooting, undertaken humanely and safely by professionals using standard protocols, is the only way this can happen.

    The government’s own management plan for feral horses states that ‘if undertaken in accordance with best practice, aerial shooting can have the lowest negative animal welfare impacts of all lethal control methods’.

    This humane and effective practice is already used across Australia to manage hundreds of thousands of feral animals like horses, deer, pigs, and goats.

    Trapping and rehoming of feral horses has been used in Kosciuszko National Park for well over a decade but has consistently failed to reduce the population, has delayed meaningful action and is expensive. There are too many feral horses in the Alps and not enough demand for rehoming for it to be relied upon for the reduction of the population.

    Fertility control as a management tool is only effective for a small, geographically isolated, and accessible population of feral horses where the management outcome sought is to maintain the population at its current size. It is not a viable option to reduce the large and growing feral horse population in the vast and rugged terrain of Kosciuszko National Park.

    Feral horses are trashing and trampling our sensitive alpine ecosystems and streams, causing the decline and extinction of native animals. The federal government’s Threatened Species Scientific Committee has stated that feral horses ‘may be the crucial factor that causes final extinction’ for 12 alpine species.

    I recognise the sad reality that urgent and humane measures are necessary to urgently remove the horses or they will destroy the Snowies and the native wildlife that call the mountains home. I support a healthy national park where native species like the Corroboree Frog and Mountain Pygmy Possum can thrive.

    Kind regards,
    [Your name]
    [Your email address]
    [Your postcode]