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Biased dispersal can explain fast human range expansions
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In: Fort J 2020 Biased dispersal can explain fast human range expansions Scientific Reports 10 art.núm. 9036 (2020)
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Assessing the importance of cultural diffusion in the Bantu spread into southeastern Africa
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In: PLoS ONE, 2019, vol. 14, núm. 5, p. e0215573 ; Articles publicats (D-F) (2019)
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Assessing the importance of cultural diffusion in the Bantu spread into southeastern Africa
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Can a linguistic serial founder effect originating in Africa explain the worldwide phonemic cline?
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Can a linguistic serial founder effect originating in Africa explain the worldwide phonemic cline?
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Abstract:
It has been proposed that a serial founder effect could have caused the present observed pattern of global phonemic diversity. Here we present a model that simulates the human range expansion out of Africa and the subsequent spatial linguistic dynamics until today. It does not assume copying errors, Darwinian competition, reduced contrastive possibilities or any other specific linguistic mechanism. We show that the decrease of linguistic diversity with distance (from the presumed origin of the expansion) arises under three assumptions, previously introduced by other authors: (i) an accumulation rate for phonemes; (ii) small phonemic inventories for the languages spoken before the out-of-Africa dispersal; (iii) an increase in the phonemic accumulation rate with the number of speakers per unit area. Numerical simulations show that the predictions of the model agree with the observed decrease of linguistic diversity with increasing distance from the most likely origin of the out-of-Africa dispersal. Thus, the proposal that a serial founder effect could have caused the present observed pattern of global phonemic diversity is viable, if three strong assumptions are satisfied ; This work was supported in part by ICREA (Academia Humanities award to J.F.), MINECO (grants nos. SimulPast-CSD-2010-00034 and FIS-2012-31307) and the Fundacio´n BBVA (grant no. Neodigit-PIN2015E)
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Keyword:
Biologia computacional; Biologia de sistemes; Computational biology; Language and languages -- Variation -- Mathematical models; Llenguatge i llengües -- Variació -- Models matemàtics; Systems biology
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URL: http://hdl.handle.net/10256/13439 https://doi.org/10.1098/rsif.2016.0185
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Can a linguistic serial founder effect originating in Africa explain the worldwide phonemic cline?
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In: © Journal of the Royal Society Interface, 2016, vol. 13, p. 20160185 ; Articles publicats (D-F) (2016)
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Can a linguistic serial founder effect originating in Africa explain the worldwide phonemic cline?
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Language extinction and linguistic fronts
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In: Isern Sardó, Neus Fort, Joaquim 2014 Language extinction and linguistic fronts Journal Of The Royal Society Interface 11 94 20140028 (2014)
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Language extinction and linguistic fronts
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In: Isern Sardó, Neus Fort, Joaquim 2014 Language extinction and linguistic fronts Journal Of The Royal Society Interface 11 94 20140028 (2014)
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