Paleovegetation in West Africa for 18.000 B.P. and 8.500 B.P.

The investigations were concentrated on the reconstruction of former vegetation patterns tor the Sudanian and Guinean savannas as well as tropical semi-evergreen and evergreen rainforests. A numher of research projects concerning changes in the vegetation cover have shown that even tropical regions have been effected by the enormous climatic oscillations of the last 20,000 years. The problem linked to the judgement of a changing vegetation is the increasing effect of human influence on the appearenee...