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A question of timing: spatio-temporal structure and mechanisms of early agriculture expansion in West Africa

Lespez, Laurent
Garnier, Aline
Ballouche, Aziz
Neumann, Katharina
Pays, Olivier
Published in Journal of archaeological science. 2014, vol. 50, p. 359-368
Abstract Although understanding the emergence of agriculture in West Africa has recently benefited from major advances, the reasons for its fast diffusion south of the Sahara remain to be explained. We propose here a reconstruction of African agriculture expansion built from a spatialization of available archaeological data and associated radiocarbon dates. With this approach, we can show that the initial spread of food production occurred with some specific rhythms. From this structure, we discuss the potential underlying processes. Our work suggests that the spread of agriculture in West Africa cannot be explained by a simple response to an abrupt environmental change at the beginning of the Late Holocene, but rather by a combined climate-culture mechanism. In addition, cord-wrapped roulette-impressed pottery appears to be a good indicator of the expansion of agro-pastoralist populations in Sub-Saharan regions. Our results are also consistent with the assumption of a monophyletic origin of domestic pearl millet in south-western Sahara and strengthen the idea that the first cultivators were Saharan pastoralists.
Keywords West AfricaAgricultureDiffusionPearl milletRoulette-decorated potteryClimate-culture interactions
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Research groups Laboratoire d'archéologie et peuplement de l'Afrique (APA)
Unité d'anthropologie
Swiss National Science Foundation: P300P1_147816
(ISO format)
OZAINNE, Sylvain et al. A question of timing: spatio-temporal structure and mechanisms of early agriculture expansion in West Africa. In: Journal of archaeological science, 2014, vol. 50, p. 359-368. doi: 10.1016/j.jas.2014.07.025 https://archive-ouverte.unige.ch/unige:39937

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Deposited on : 2014-09-03

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