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Paleoclimatic changes are the most probable causes of the rainforest crises 2,600 y ago in Central Africa [Physical Sciences]

In PNAS, Garcin et al. (1) describe a Late Holocene rainforest crisis (LHRC) between ∼2,600 and 2,000 calendar years B.P. in Lake Barombi (Southwest Cameroon) when tropical rainforest was replaced by savannah, as attested by a large peak in Poaceae pollen (30–40%), and correlated with a shift in the δ13C...
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