PhD student Billy Ross is using motion-sensing camera traps to establish baseline data on the number of northern quolls and feral cats in the Pilbara to
determine whether cat-baiting can prevent the threatened mammals’ extinction.
“Feral cats are devastating our native wildlife – they are killing millions of individuals of many wildlife species and have been implicated in a number of extinctions and declines across the continent,” says Mr Ross.
“Since their arrival alongside European settlement, they have dispersed across more than 98 per cent of the country. We need to implement broad-scale cat control initiatives to prevent further declines and to assist the recovery of those threatened species currently on the brink.”
Mr Ross is monitoring populations of the endangered northern quoll in the Pilbara, one of the last quoll habitats to remain free of cane toads – another invasive species with a devastating impact on quoll numbers. He is also measuring feral cat densities and recording the interactions between feral cats and quolls.
“Over the next three years I will investigate the impact of the Eradicat baiting program on feral cat densities and spatial ecology; the nature of interactions between cats and quolls in the Pilbara; and the ecological responses of quolls to reduced numbers of feral cats.”
The Pilbara cat-baiting program is managed by the West Australian Department of Parks and Wildlife, a TSR Hub partner, as part of a Threatened Species Offset Plan supported by Rio Tinto. The department assumes responsibility for baiting, assessing bait uptake and quoll monitoring – with the research undertaken by Mr Ross designed to complement and augment the program’s activities.
His research forms part of the TSR Hub’s Project 1.1, which aims to develop management tools to reduce the impact of feral species on threatened mammals. The project is led by Professor John Woinarski and Dr Sarah Legge.
Despite occasionally running into difficulties with impenetrable spinifex and the often-searing heat of the Pilbara, Mr Ross still manages to appreciate the beauty of his surroundings.
“I consider myself fortunate to spend so much time among the mighty mesas (hills) and gorgeous gorges of my field sites.”
Mr Ross will continue his research for the next three years – collecting and analysing data with the intention of optimising future baiting programs.
Image: Setting a trap by Billy Ross
Conservation managers considering the implementation of nest boxes programs need to give careful consideration to design, colour, placement and shade profile of nest boxes.
The vast brigalow forest that extended from northern New South Wales to southern Queensland has been cleared in the space of 60 years and it seems that many species have become threatened as a result. Rod Fensham and co-workers have identified the plant species that are likely to have become threatened and many of these species were not previously recognised as imperilled.
Monitoring is fundamental to good policy and effective conservation management. Data derived from monitoring underpin the process for listing of species as threatened, which is a precursor to recognition in policy.
TSR Hub researcher David Lindenmayer and colleagues embarked on a four-year case study examining the impacts of a biodiversity offset which established nest boxes to compensate for the losses of natural tree hollows caused by the widening of sections of the Hume Highway (the road linking Sydney and Melbourne).
In recent months you may have noticed some energetic public debate about what is the biggest threat to threatened species in Australia. Is it feral cats and foxes or is it the clearing and degradation of native vegetation?