EVEN THE FORESTS WERE NOT IMPROVED ALTHOUGH THE AMOUNT OF WATER INCREASED
The team found that the lake’s water level and vegetation had a consistent climate pattern over the past 636,000 years, with the forests surrounding the shore disappearing during drought and recovering when the lake reached normal levels.
However, pollen records showed an interruption in the cycle 86,000 years ago. Researchers found that water levels stabilized during wetter periods, but forests along the coast did not improve. The data also revealed an increase in coal accumulation shortly before the species richness in the region declined.