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July 17, 2018 02:40 pm
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/9S9ogrCO_qo/traces-of-lost-society-found-in-pristine-cloud-forest
Traces of Lost Society Found in 'Pristine' Cloud Forest
Deep in Ecuador's lush Quijos Valley, a society thrived -- and then disappeared. But a lake preserved its story. From a report: In the 1850s, a team of botanists venturing into the cloud forest in the Quijos Valley of eastern Ecuador hacked their way through vegetation so thick they could barely make their way forward. This, they thought, was the heart of the pristine forest, a place where people had never gone. But they were very wrong. Indigenous Quijo groups had developed sophisticated agricultural settlements across the region, settlements that had been decimated with the arrival of Spanish explorers in the 1500s. In their absence, the forest sprung back. This process of societal collapse and forest reclamation is described in a new study published today in Nature Ecology and Evolution. The Quijos Valley lies in one of the most biodiverse cloud forests in the world, along a pre-Columbian trade route that linked the rich Amazonian lowlands with the high Andes. Thousands of people lived there centuries before the Spanish arrived, farming maize, squash, beans, and even passionfruit in poor soil of the valley floor. The study's researchers found a tiny lake in the valley and dug down into the silt at the bottom, pulling up a plug of sediment that had built up over the last 1000 years -- and found evidence of human occupation going back to the very oldest part of the core. In the oldest layers, scientists found tiny pieces of pollen -- swept from the valley and the surrounding forest into the lake by wind -- from maize and other plants that only grow in open, airy conditions, which told them that humans were cultivating plants on the valley floor. They also found plenty of charcoal bits, indications that people had lit fires nearby.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/9S9ogrCO_qo/traces-of-lost-society-found-in-pristine-cloud-forest
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