Human migration patterns are more closely linked to megafauna extinction than climate change
In short: Researchers who analyzed global mammal extinctions found that the disappearance of large animals was primarily associated with human movement rather than shifting climates. By examining country-level data on species weighing 10 kg or more, the team compared the timing of these losses against both known climatic shifts and the geographical spread of early humans.
The study provides a macroscale perspective on why many large mammals vanished during the late Quaternary period. While climate change is often cited as a major factor, this analysis suggests that human presence was the dominant driver across most continents.
The research utilized comprehensive data on species distributions from 132,000 to 1,000 years ago. A limitation of this approach is its reliance on existing country-level records and broad geographical resolutions rather than site-specific archaeological evidence.
Why it matters: Understanding why large animals went extinct helps clarify the profound impact human migration has had on global biodiversity.
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