Sentences with phrase «vegetated period»

Ancient pollen samples suggest that the landscape was a bit like today's Chilean Andes: grassy tundra dotted with small trees.This vegetated period peaked during the middle Miocene, when atmospheric carbon dioxide levels were around 400 to 600 parts per million.

Not exact matches

While most of the region endured dry, freezing weather, pockets of «refugia,» or vegetated areas not affected by climate change, remained scattered along the Bering land bridge throughout the LGM period.