Secular Café: Humans killed off Australian megafauna

Secular Café Serious discussion of science, skepticism, evolution, pseudoscience, and the paranormal

Humans killed off Australian megafauna Mar 27th 2012, 06:54 Rather than climate change. Looks pretty solid to me now. http://www.bbc.co.uk/news/science-environment-17488447 Quote: The extinction in turn caused major ecological changes to the landscape. The scientists looked at pollen and charcoal from Lynch's Crater, a sediment-filled volcanic crater in Queensland that was surrounded by tropical rainforest until European settlement. They found Sporormiella spores, which grow in herbivore dung, virtually disappeared around 41,000 years ago, a time when no known climate transformation was taking place. At the same time, the incidence of fire increased, as shown by a steep rise in charcoal fragments. The extinction of megafauna then had its effect on vegetation. David

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