Demic Diffusion


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A migratory model regarding the spread of ancient culture—e.g., from Africa, across Europe—which modifies the general diffusion theory, by postulating that farmers advanced at a rate of 1 km/year, assimilating the hunter-gatherer gene pool
References in periodicals archive ?
But while demic diffusion may have predominated, it is equally important to assess the involvement, different for each place and time, of indigenous hunter-gatherers who adopted farming through contact with colonising farmers.
Transdanubia and SW Slovakia) acculturation or a combination of demic diffusion and adoption was probably the motor.
2000), much of which supports an acculturation model--and therefore challenges the demic diffusion hypothesis of Ammerman & Cavalli-Sforza (1984), which had only a very small number of dates to refer to.
The authors note similarities between the people of Ban Chiang and the latter group and the Ainu people, and pay no heed to the weight of linguistic or archaeological evidence that, in fact, supports the hypothesis for demic diffusion.
The present treatment shows that a continuous demic diffusion model can cover also models of 'saltatory jumps' and 'leapfrogging' suggested by other authors (above).
In their monograph, they reported that such a cline (trend) in gene frequencies was expected where farming had spread by demic diffusion.
Recently, the geographic distribution of Y-chromosome haplotypes from modern Europeans has been presented in support of the Neolithic demic diffusion model (Chikhi et al.
The results of this paper, therefore, strongly support van Andel & Runnels' (1995) modified model of Neolithic demic diffusion originating from south central Anatolia.
Genetic variation in north Africa and Eurasia: neolithic demic diffusion vs.
1997) have shown that there is good cause to question the demic diffusion model as proposed by Cavalli-Sforza and colleagues (e.
The demic diffusion model for the spread of agriculture as proposed by Ammerman & Cavalli-Sforza (1971; 1984: 63-84) suggested that early farming populations expanded into southeastern Europe gradually at the front of a wave-of-advance.
In this paper we argue that agriculture arrived in southeastern Europe by demic diffusion and present a major modification of Ammerman & Cavalli Sforza's (1984: 6) wave-of-advance model for this process.