TY - SER ID - dupont1996paaa T1 - Pollen analysis and age model of sediment core GIK-16856-2 AU - Dupont, Lydie M AU - Weinelt, Mara PY - 1996 T2 - Supplement to: Dupont, LM; Weinelt, M (1996): Vegetation history of the savanna corridor between the Guinean and the Congolian rain forest during the last 150,000 years. Vegetation History and Archaeobotany, 5, 273-292, https://doi.org/10.1007/BF00195296 PB - PANGAEA DO - 10.1594/PANGAEA.776472 UR - https://doi.org/10.1594/PANGAEA.776472 N2 - Pollen and spores from a deep-sea core located west of the Niger Delta record an uninterrupted area of lowland rain forest in West Africa from Guinea to Cameroon during the last Interglacial and the early Holocene. During other periods of the last 150 ka, a savanna corridor between the western -- Guinean -- and the eastern -- Congolian -- part of the African lowland rain forest existed. This so-called Dahomey Gap had its largest extension during Glacial Stages 6, 4, 3, and 2. Reduced surface salinity in the eastern Gulf of Guinea as recorded by dinoflagellate cysts indicates sufficient precipitation for extensive forest growth during Stages 5 and 1. The large modern extension of dry forest and savanna in West Africa cannot be solely explained by climatic factors. Mangrove expansion in and west of the Niger Delta was largest during the phases of sea-level rise of Stages 5 and 1. During Stages 6, 4, 3, and 2, shelf areas were exposed and the area of the mangrove swamps was minimal. ER -