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An overview over 20 years of archaeobotanical studies in West Africa is given. The Holocene vegetation history of the West African savannahs and the development of plant cultivation were major research topics. The existence of climatically induced savannahs throughout the Holocene could be confirmed. Archaeobotanical data indicate the late emergence of agriculture around 2000 BC and the development of a cultural landscape in the course of the last 2000 years.
The year 1989 represents the starting point of the cooperation between botanists of the Goethe-University in Frankfurt (Germany) and of the University of Ouagadougou (Burkina Faso). Some years later, the University of Abomey-Calavi (Benin) joined the cooperation. This paper gives an overview on joint projects, resulting publications and theses, and on other achievements of this fruitful cooperation, which meanwhile also comprises partners of Ivory Coast, Niger and Senegal.