(Ali Majdfar/Getty Images)NATURE
CARLY CASSELLA19 SEPTEMBER 2021
Apart from the global catastrophe that killed off most of thedinosaurs, some experts think almost all the mass extinctions in Earth’s history were followed by a proliferation of microbes in rivers and lakes.
After the Permian extinction event 252 million years ago – the largest mass extinction event in Earth’s history – there appears to have been a burst in bacterial and algal blooms, lasting for hundreds of thousands of years.
According tothe geologic record in Australia, the damaging impacts ofclimate changeand climate-driven deforestation during the Permian extinction event most likely caused a toxic soup to sprout in the Sydney Basin, one of the oldest known freshwater ecosystems in the world.
That’s disconcerting, the authors say, as human activity is leading to a similar mass extinction event today.
“We’re seeing more and more toxic algae blooms…
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