Protecting Sandhill Dunnarts

Why we need to act

This little-known species is highly elusive and lives in harsh, arid environments characterised by sandy soils and dense spinifex. Like many small Australian marsupials, Sandhill Dunnarts are highly vulnerable to predation by introduced species such as feral cats and foxes. Their secretive nature and limited distribution make them particularly difficult to monitor, posing a significant challenge for conservation.

Threats to the species

As a species, the Sandhill Dunnart is vulnerable to habitat degradation and predation by invasive species. Understanding the effectiveness of threat management is crucial for its long-term survival.

By refining predator control strategies and identifying key habitats for protection, this project plays a vital role in securing the future of Sandhill Dunnarts in the Gawler Ranges. The insights gained will contribute to broader conservation efforts aimed at preserving Australia’s unique and endangered small mammals.

Solution and approach

1. Occupancy surveys and predator management assessment
   The project seeks to determine Sandhill Dunnart presence within areas subjected to different predator control measures, specifically, regions managed for both feral cats and foxes versus those managed for foxes alone. Understanding how these approaches influence Dunnart populations will help refine conservation strategies to maximise their impact.

2. Motion-activated camera monitoring
   To detect Sandhill Dunnarts, we are using motion-activated cameras deployed in suitable sandy spinifex habitat. Each camera is positioned over a scent-baited tunnel with 10mm graduations, allowing researchers to estimate the size of detected animals. Currently, 10 cameras are placed in areas managed for both feral cats and foxes, while another 10 are in fox-only managed zones. These cameras will remain in place for six months before being relocated to survey new habitat areas.

3. Targeted trapping for species confirmation
   In areas where Sandhill Dunnarts are detected on camera, targeted live trapping may be conducted to confirm species identification and gather additional ecological data. This will help improve our understanding of Dunnart population structure and habitat use.

4. Comprehensive sampling across key conservation reserves
   By the end of 2027, all suitable Sandhill Dunnart habitats across the Gawler Ranges and Pinkawillinnie Conservation Reserves will be surveyed, ensuring a broad and thorough assessment of the species’ status in these protected areas.

The findings will help refine predator control programs and support the recovery of one of Australia's most threatened small mammals, while contributing to broader landscape-scale conservation efforts under the Three Safer Havens Initiative.