Rio Tinto has committed millions of dollars to a new initiative aimed at stopping the poisonous cane toad from reaching the Pilbara region of western Australia. The mining giant operates a vast iron ore facility in the area and is joining forces with Curtin University in Perth and other partners for this effort. The total cost of the project is estimated at A$28 million, which is equivalent to approximately 14.5 million pounds.
The primary goal is to construct a toad containment zone that will prevent the invasive species from travelling further south. Although the toads do not pose a direct threat to the mining operations themselves, they produce toxins that are lethal to native wildlife. Consequently, their presence poses a significant risk to the broader ecosystem of the Pilbara region.
This environmental initiative arrives at a sensitive time for the company. Rio Tinto previously faced widespread criticism after it destroyed two sacred Aboriginal rock shelters in the Pilbara. These shelters were located above tonnes of iron ore, and their destruction led to the departure of the former chief executive. The incident sparked a major backlash and prompted the company to make a commitment to rebuilding trust with Indigenous communities.
Roberta Hunter, a ranger in Australia's Nyangumarta Warrarn Indigenous Protected Area, commented on the proposed containment zone. She noted that cane toads destroy water sources and animals. Hunter added that when toads come close to their country, the community wants to be there to stop them because they do not want the land to be destroyed.
The technical plan involves cutting off the toad's access to water. The barrier will cover 7,500 square kilometers of land situated between the Great Sandy Desert and the Indian Ocean. During drier months, cane toads require water every few days to survive. In the absence of natural water sources, they rely on artificial points typically used for cattle and irrigation.
The funding allocated for the project will be used to prevent the toads from accessing dams, storage tanks, and other ground-level water sources. This five-year project is scheduled to begin in 2027. The strategy aims to exploit the toads' dependence on specific water availability to halt their southward march.
Several native species are at risk if the toads successfully enter the Pilbara. These include the northern quoll, whose population numbers have been decreasing, as well as the goanna lizard and the ghost bat. Protecting these vulnerable animals is a key driver for the containment effort.
The cane toad was originally introduced to Australia in 1935 to control beetles within the sugar cane industry. Since that time, the species has been on a slow march west across the country's northern landscape. According to the Australian government, the toads travel between 40 and 60 kilometers per year.
There are currently no predators or diseases that naturally control the toad population. The animals defend themselves by using poison. Ben Phillips, a professor at Curtin University, stated that without action, the toads would reach the Pilbara region within two decades.
Phillips described the toad containment zone as a once in a lifetime opportunity. He emphasized that the project aims to stop one of the world's worst invasive species in its tracks and protect the region's unique wildlife.
