As one of the most arid and geographically remote regions of Australia, the Western Desert has always presented severe challenges for human survival. Yet despite the harsh conditions, Aboriginal peoples have maintained an enduring presence, continuously adapting to environmental variations through complex socioeconomic strategies.

In the study, published in Scientific Reports, the researchers used Earth Observation data to model the most suitable habitats for traditional foraging activities, identifying where surface water was most abundant and vegetation was greenest to infer which areas of the landscape past Aboriginal peoples were likely to have utilized. The study also drew on previous research into traditional subsistence and settlement practices, enabling researchers to estimate daily foraging range in proximity to water.

Lead author of the study, Postdoctoral Researcher Dr. Wallace Boone Law, says the fine scale of the satellite model developed enabled the team to depict the highly variable nature of environmental and hence potential foraging habitats in the Western Desert.

"Where earlier studies depicted the Western Desert as a relatively uniform environment, our study shows the region to be highly dynamic and variable, both in its environmental conditions and foraging potential," Dr. Law said.

"For example, desert dunefields were once thought to have been a periodic barrier to occupation, but our work shows this is not true for all sandridge deserts. Some dunefield areas offer good foraging habitats, particularly amongst interdunal swale areas.