Impact of colonisation on First Nations people far greater than previous estimates, research finds

ABC News (AU) · collected 2026-09-15 · by Stephanie Richards
Read the original at ABC News (AU) ↗

Summary

Researchers from across Australia have revised estimates of pre-colonial Indigenous populations, suggesting that Australia's Indigenous population was up to seven times larger than previously thought, with a median estimate of 2.22 million people before colonization. Post-1788, an estimated 2.06 million First Nations Australians died due to diseases, massacres, and other colonial disturbances, leaving only about seven percent of the pre-colonial population surviving just over 70 years after the arrival of Europeans. The study highlights a demographic catastrophe caused by colonization, using computer modeling and ethnographic observations to provide a more accurate picture of Indigenous history in Australia.
Written by the local model on 2026-09-15, using this article's own text rather than the other coverage of the same event (that is the story summary below).

Signals How these are calculated →

Claims extracted
24
claim-shaped sentences
Uncertain
8%
2 of 24 hedged
Leaning
withheld
no quote in the article backed the model's score
Correction & hedging signals
60.0
corrections and hedging in what we collected; not a measure of accuracy
Outlets on this story
1
Science
Narrative spread
1
articles carrying this framing
Analyzed 2026-09-15 · how these are computed

AI analysis (generated at analysis time, not now)

Story summary

Researchers from Flinders University in Australia have revised pre-colonial Indigenous population estimates, suggesting there were up to seven times more Indigenous people on the continent than previously thought, with a median estimate of 2.22 million people before European arrival. The study indicates that after the First Fleet's arrival in 1788, diseases and settler violence led to an estimated 2.06 million deaths, drastically reducing the population. Based on current trends, it would take another 21 years for Australia’s Indigenous population to recover to pre-colonisation levels. This research provides a more accurate picture of the devastating impact of colonisation on First Nations people and highlights historical biases in earlier estimates.

Written for “Colonization Impact On First Nations …” on 2026-09-15, grounded in this article and the 0 other(s) covering the same event.
Why this leaning score
The model judged this article politically coded and scored it -0.65, but 2 quote(s) could not be found in the article and the other 2 are attributed speech rather than the article's own narration, so the score is not published.
Written under an earlier scoring contract, which gave a paragraph rather than checkable quotes. Re-analysing this article replaces it.
Leaning score withheld for article 9705: no verified evidence · logged 2026-09-15

Story

📰 Colonization Impact On First Nations …
Science · 1 article(s) covering the same event. This is the one the site leads with.

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Publisher

ABC News (AU) · 445 article(s) · 2 correction(s) detected
Running correction rate · 2 correction(s)
2026-09-15
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Who wrote this

Stephanie Richards
1 article(s) here · 1 carrying a prediction
🔮 Based on current trends, it would take another 21 years for Australia's Indigenous population to reach pre-colonisation numbers.
The only article under this byline in the corpus.

Topics

Australia Europeans First Nations Indigenous the First Fleet

Subjects

Australia GPE · 10× Indigenous NORP · 8× First Nations NORP · 5× Bradshaw PERSON · 2× the First Fleet ORG · 2× Australian NORP · 1× Eualayai/Gamillaroi NORP · 1× Europeans NORP · 1× Larissa Behrendt PERSON · 1× University of Technology Sydney ORG · 1×

Narrative

Report co-author and Flinders University global ecology professor Corey Bradshaw said he found it "unsurprising" that it had taken until now to form a more accurate picture of Australia's pre-colonial Indigenous population, given historical biases and racism towards First Nations people.
framing: assertive · carried by 1 article(s) · first seen 2026-09-15
🔮 Based on current trends, it would take another 21 years for Australia's Indigenous population to reach pre-colonisation numbers.

Claims (24 extracted, 2 hedged)

In short: Australia's pre-colonial population estimate has been revised, suggesting the number of Indigenous people on the continent was at least twice as large as previously thought. asserted
number → revise → continent
Diseases and settler violence caused an estimated 2.06 million to die after the arrival of the First Fleet. asserted
million → cause → Fleet
Based on current trends, it would take another 21 years for Australia's Indigenous population to reach pre-colonisation numbers. asserted
population → base → numbers
Australia's Indigenous population was up to seven times larger before colonisation than previously estimated, but was devastated following the arrival of Europeans, new research reveals. asserted
research → estimate → Europeans
Researchers from across Australia say their findings paint a more accurate picture of the impact of colonisation on First Nations people, updating previous population estimates calculated using anthropological information gathered in the 1930s. asserted
findings → say → 1930s
In a research paper published on Tuesday evening, the researchers estimated Australia's median pre-colonial Indigenous population was 2.22 million people — significantly higher than previous estimates of between 250,000 and 1 million people. asserted
population → publish → people
But according to the new research, an estimated 2.06 million First Nations Australians were likely to have died from diseases, massacres and mortality associated with displacement and other colonial-related disturbances to Indigenous ways of life over the late 18th and 19th centuries. uncertain
Australians → accord → centuries
Just over 70 years after the First Fleet landed in Australia in 1788, only seven per cent of Australia's pre-colonial population was estimated to have survived. asserted
cent → land → population
The researchers used computer modelling and reviewed ethnographic observations and archaeological and genetic reconstructions to calculate the revised estimates. asserted
researchers → use → estimates
"These research findings challenge us to rethink the scale of what happened after 1788," University of Technology Sydney professor and Eualayai/Gamillaroi woman Larissa Behrendt said. " asserted
Behrendt → challenge → Technology
We are not talking about a marginal consequence of colonisation, but a demographic catastrophe at the heart of the Australian story. asserted
We → talk → story
" Lethal disease, frontier violence decimated Indigenous population asserted
disease → decimate → population
Report co-author and Flinders University global ecology professor Corey Bradshaw said he found it "unsurprising" that it had taken until now to form a more accurate picture of Australia's pre-colonial Indigenous population, given historical biases and racism towards First Nations people. asserted
it → say → people
He said previous studies underestimated the impact of lethal diseases and frontier and structural violence on the population. asserted
studies → say → population
"Aboriginal people were considered fauna under our Wildlife Act as late as the 1970s, the first official census of Aboriginal people in Aboriginal in 1971, so it hasn't been that long that we've woken up to the fact these travesties occurred," he said. asserted
he → consider → fact
Professor Bradshaw said smallpox alone could have killed up to 220,000 First Nations people along the country's east coast within the first 10 years of colonisation. uncertain
smallpox → say → colonisation
He said while some massacres were recorded in databases, the information represented "only the tip of the iceberg". asserted
information → say → iceberg
"Probably most of the frontier violence was done under the cover of night, so to speak," he said. " asserted
he → do → night
We expect that the recorded massacres are probably out by an order of magnitude of what was actually happening." asserted
what → expect → magnitude
Research important to truth-telling and reconciliation Australia's First Nations population has grown since the 1950s, with latest census data showing in 2021, it was at about 37 per cent of the estimated median pre-colonial size. asserted
it → grow → size
Researchers estimate that achieving parity with the 1788 pre-colonial population would not be reached until 2047, if current growth trends continue. asserted
trends → estimate → 2047
In their paper, the researchers wrote that estimating the size of Australia's Indigenous population before colonisation was "invaluable to truth-telling and reconciliation". asserted
estimating → write → telling
"Removing 93 per cent of the (Indigenous) population in 70 years, it can't be interpreted in any other way but disastrous," Professor Bradshaw said. " asserted
Bradshaw → remove → way
On the flip side, these Indigenous cultures survived and these people, despite all that horrendous treatment and dispossession and death, managed to perpetuate their languages, their culture, their managing of country and that is worth celebrating." asserted
that → survive → country
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