Australian researchers have released a study estimating that over 2.2 million Indigenous people inhabited the continent in 1788. This new figure, derived from genetic and ecological modeling, suggests the previous consensus of 300,000 was a massive undercount.
Triangulating 2.22 million people through genetic and ecological modeling
A multidisciplinary team of scientists has fundamentally revised the baseline for Australian history by estimating the pre-colonial Indigenous population at 2.22 million people in 1788. led by ecologist Corey Bradshaw of Flinders University, the research utilized three distinct evidentiary lines: radiocarbon dating of archaeological remains, genetic reconstruction from modern genomes, and ecological modeling of the continent's land carrying capactiy.
This new figure represents a significant departure from the long-held academic consensus, which placed the pre-colonial population at approximately 300,000. According to the study, the resulting density of 0.29 individuals per square kiilometer indicates a much more robust and widespread presence across the continent than earlier scholars acknowledged.
The 93% demographic collapse witnessed by 1861
The arrival of European colonists triggered what the researchers describe as a full-scale demographic catastrophe. Demographic modeling suggests that within just seventy-three years of initial settlement, the Indigenous population had plummeted by 93 percent.
By 1861, the scale of the loss was staggering, representing roughly two million deaths. While the data paints a grim picture of loss, the researchers also emphasize a narrative of resilience, noting that Indigenous peoples adapted under extraordinary pressure to preserve their culture, language, and knowledge. As the report says, this rapid decline directly challenges the notion that colonial violence had only a minor or incidental impact on the continent's original inhabitants.
The inaccuracy of colonial blanket distribution records
Historical population estimates were often deeply flawed because they relied too heavily on colonial-era documentation. Many previous counts were based on individuals who appeared at blanket distribution points or resided on government reserves, which failed to account for the vast majority of the population.
These colonial records were often compiled after a "cascade of disease,dispossession and violence" had already deciamted Indigenous communities. By using these records as a starting point, earlier historians were essentially counting a population that had already been significantly reduced, leading to the "postcard-size" estimates that the new study seeks to correct.
The unanswered question of the 4.2 miillion death ceiling
Significant variables remain regarding the exact human cost of colonization, specifically within the study's wide statistical margins. The researchers noted that the estimated range of total deaths varies from a low of 700,000 to a high of 4.2 milion.
The source does not clarify which specific environmental or social factors drove the upper limit of that 4 .2 million figure, nor does it provide a breakdown of how these deaths were distributed across different linguistic groups. Furthermore, while Larissa Behrendt of the Research Council Centre of Excellence for Indigenous and Environmental Histories and Futures highlighted the findings as a "demographic catastrophe," the specific mechanisms that allowed for the documented resilience of these communities amidst such loss remain an area for further investigation.
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