Tag Archives: Tasmania

Threats: Feral goats

Feral goats are animals which have escaped the control of people and are living and breeding in the wild. In Tasmania, many feral populations probably built up in the 1980s from the offspring of haphazard escapes and releases: crossbred varieties are common. Feral goats can breed from six months of age and young are weaned […]

The red fox in Tasmania, an incursion waiting to happen.

Tasmania’s high risk of continued red fox incursions and consequent establishment comes from a number of factors, some common to the issue of introductions, some specific to Tasmania. Foxes themselves; their physical, ecological and behavioural flexibilities are important. They are extremely adaptable animals the pups of which can be mistaken for dogs and which some […]

Minimising the effects of 1080 fox baiting on non-target species and vice versa while maximising the risks of foxes in Tasmania

It did not seem possible to eradicate foxes in Tasmania based on ‘chasing down’ individuals so a program based on endangering foxes wherever they occurred was undertaken. Based on differences in physical susceptibilities to 1080 between foxes and obvious potential non-target wildlife, 1080 baiting was chosen as the basic strategic eradication method. Key potential problems […]

Developing a strategic fox eradication program in a sceptical social environment

From 1998 to late 2003 there was concrete evidence showing a small number of red foxes exist in Tasmania. This spate of evidence led to the Fox Free Tasmania program tasked with eradicating foxes. The history, effects and the difficulties of controlling foxes on mainland Australia are accepted but many Tasmanians remain sceptical about foxes […]

Detection of the Red Fox (Vulpes vulpes) at Low Population Density

Since the recent introduction of the European red fox (Vulpes vulpes) to Tasmania, an urgent need has arisen to detect populations while they are still at low densities so that control measures can be implemented. However, detection and enumeration of rare and cryptic animals presents a particularly difficult challenge. Standard methods of surveying foxes involve […]

An Integrated Pest Management Strategy to Manage Mammal Browsing on State Forest in Tasmania

Browsing of sown and planted tree seedlings by mammalian herbivores (wallabies, pademelons, possums and rabbits) is currently a significant biotic risk faced by production forestry in Tasmania. Use of the poison 1080 has historically been the principal method of managing mammal browsing. However it’s use, particularly against native herbivores, is controversial and in 2004 the […]

Eradicating European Carp from Tasmania and Implications for National European Carp Eradication

Carp is a major feral pest in Australia. Development of control options has consistently been identified as a high priority research item. When carp were identified in Lakes Crescent (2365 ha) and Sorell (4770 ha) in 1995, the Inland Fisheries Service (IFS) decided to eradicate – both populations. These represent the only extant carp populations […]


Carp were first discovered in Tasmania in the states North-West in 1975 and again in 1980. These populations were eradicated using the fish poison rotenone. Carp were again discovered in Tasmania in early 1995 this time in the popular recreational trout waters of lakes Crescent and Sorell. Following the discovery of this latest infestation, the […]

Foxes in Tasmania

From growing amounts of hard evidence, it is regrettably apparent that the Red Fox (Vulpes vulpes) is present in low numbers in Tasmania. This efficient, adaptable predator is recognised nationally as the single most devastating introduced pest and threat to Australia’s native land animals, and it would be an unmitigated disaster if it was allowed […]

Animal Pests

Animal pests represent one of the most serious threats to Tasmania’s biodiversity, both on land and in water. In 2001, there was a total of 1,012 (60 vertebrates, 952 invertebrates) known naturalised animal species in Tasmania. This ‘At a glance’ section provides an overview of the animal pest issue. More detailed information and references are […]