Pilbara’s ecosystem faces defense against cane toad advance

A novel strategy involving the creation of a “waterless barrier” south of Broome is being implemented to disrupt the toads’ movement. This involves eliminating water sources, such as dams and storage tanks, which the toads rely on.

The project will impact six pastoral stations, encompassing 7,500 square kilometers of land. A significant investment of $28 million from Rio Tinto and the Rhodes Ridge joint venture will enable the commencement of work on the containment zone starting next year.

The potential impact on native wildlife is severe. Curtin University biologist Ben Phillips described the situation as “a national tragedy,” highlighting the loss of Australian native animals like snakes, goannas, and crocodiles. He emphasized the Pilbara’s unique biodiversity and the threat posed by the invasive toads.

Curtin University ecologist Judy Dunlop noted the success of similar water point modifications in other areas. “By removing the critical thing they need, which is water, we prevent them from continuing their spread,” she explained. The construction phase is anticipated to take between two and five years, alongside ongoing monitoring and related work.

Traditional owners are actively involved in the project, with the Karajarri Traditional Lands Association playing a key role. “We’ve got a ranger program, we have a heritage team that are going to assist the project leads and construction workers,” said Martin Bin Rashid, chief executive of the association. He stressed the importance of protecting culturally significant water sources.

Pastoralists are also collaborating on the initiative. David Stoate, owner of Anna Plains Station, stated, “It took a bit of time to come around to the idea of the project because it’s such a big job.” He anticipates the need for approximately 100 waterless barriers across his station.

The concept of a waterless barrier was initially proposed in 2016, with early funding of around $340,000 allocated for community consultation. The total funding now stands at $12 million, significantly boosted by the Rio/Rhodes Ridge contribution, which will be distributed over five years.

Rio Tinto’s Chris Osborn described the Pilbara as a “special place” and expressed confidence in the collaborative approach. “I think it’s a model for how really critical problems can be solved when you get the right partners involved,” he said.