Demographic conditions necessary to colonize new spaces: the case for early human dispersal in the Americas

Lanata, José Luis; Martino, L. A.; Osella, A.; García-Herbst, Arleen

doi:10.1080/00438240802452890

Cited by 37 publications

(29 citation statements)

References 42 publications

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“…However, the data presented here are useful for estimating the rate of long-term growth, which we place at w0.05 AE 0.03 percent per year, comparable to estimates of 0.08-0.1 percent per year and 0.008 percent per year for late Pleistocene and early Holocene hunter-gatherer groups (Hassan, 1981;Pennington, 2001). The highest growth rate occurs just before 14,000 cal yr BP, consistent with a rapid dispersal and colonization of the continent by early Paleo-Indians (Steele et al, 1998;Lanata et al, 2008). Growth rates of a few percent per year could only have been sustainable for a few centuries, 1 and would have been confined to certain, favorable regions, whereas in other areas negative growth would have occurred.…”

Section: Native American Population Historymentioning

confidence: 95%

Prehistoric demography of North America inferred from radiocarbon data

Peros

Muñoz

Gajewski

et al. 2010

Journal of Archaeological Science

146

131

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Section: Native American Population Historymentioning

confidence: 95%

Prehistoric demography of North America inferred from radiocarbon data

Peros

Muñoz

Gajewski

et al. 2010

Journal of Archaeological Science

146

131

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“…Recent demographic modeling of migrations of First Americans Steele 2003, 2004;Lanata et al 2008;Peros et al 2010;Steele 2009;Steele and Politis 2009;Steele et al 1998) and hunter-gatherers entering other unoccupied regions of the world (e.g., Field and Lahr 2006;Field et al 2007) indicates that human colonization of productive, open landscapes occurs quickly. Ray and Excoffier (2009) have further shown that long-range migration, as from the Pacific Northwest to South America, tends to accelerate colonization rates.…”

Section: The Americasmentioning

confidence: 99%

A Tale of Two Migrations: Reconciling Recent Biological and Archaeological Evidence for the Pleistocene Peopling of the Americas

Pitblado

2011

J Archaeol Res

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This article synthesizes the 2000s-era ''peopling of the Americas'' data drawn from molecular biology, osteology, and archaeology. Collectively, they suggest that colonization proceeded in two pulses, both originating in western Beringia, and before that, south-central and southeastern Siberia. The first pulse occurred circa 16 k-15 k cal. B.P. by watercraft along the coast of Beringia and western North and South America. The second took place 1,000 years later and involved proto-Clovis hunter-gatherers who used the ice-free corridor as a conduit south. At least eight North American sites dating as far back as the Last Glacial Maximum suggest that the peopling picture may eventually need to change to accommodate an earlier than previously thought migration through the ice-free corridor. For now, the data are not strong enough to support this scenario, but they are tantalizingly close.

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“…The popular “Out of Beringia” model [33] purports that, after the initial peopling of Beringia by North Asians >16,000 years ago, this proto-American population expanded, migrated southward along the coast and through an ice-free interior corridor, and differentiated either into a few large groups corresponding to the Eskimo-Aleut, Na-Dene and Amerindian linguistic families [34] or, in the view of many scholars, into hundreds of independent Paleo-Indian groups. On their way south, human populations may have experienced their first notable expansion in Central America [35]. However, the narrow Isthmus of Panama is a likely bottleneck that should have allowed only a comparatively small number of nomadic hunters, fishermen and gatherers to enter the northern Andean region via the Cauca and Magdalena rivers [36].…”

Section: Introductionmentioning

confidence: 99%

Continent-Wide Decoupling of Y-Chromosomal Genetic Variation from Language and Geography in Native South Americans

et al. 2013

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Numerous studies of human populations in Europe and Asia have revealed a concordance between their extant genetic structure and the prevailing regional pattern of geography and language. For native South Americans, however, such evidence has been lacking so far. Therefore, we examined the relationship between Y-chromosomal genotype on the one hand, and male geographic origin and linguistic affiliation on the other, in the largest study of South American natives to date in terms of sampled individuals and populations. A total of 1,011 individuals, representing 50 tribal populations from 81 settlements, were genotyped for up to 17 short tandem repeat (STR) markers and 16 single nucleotide polymorphisms (Y-SNPs), the latter resolving phylogenetic lineages Q and C. Virtually no structure became apparent for the extant Y-chromosomal genetic variation of South American males that could sensibly be related to their inter-tribal geographic and linguistic relationships. This continent-wide decoupling is consistent with a rapid peopling of the continent followed by long periods of isolation in small groups. Furthermore, for the first time, we identified a distinct geographical cluster of Y-SNP lineages C-M217 (C3*) in South America. Such haplotypes are virtually absent from North and Central America, but occur at high frequency in Asia. Together with the locally confined Y-STR autocorrelation observed in our study as a whole, the available data therefore suggest a late introduction of C3* into South America no more than 6,000 years ago, perhaps via coastal or trans-Pacific routes. Extensive simulations revealed that the observed lack of haplogroup C3* among extant North and Central American natives is only compatible with low levels of migration between the ancestor populations of C3* carriers and non-carriers. In summary, our data highlight the fact that a pronounced correlation between genetic and geographic/cultural structure can only be expected under very specific conditions, most of which are likely not to have been met by the ancestors of native South Americans.

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Demographic conditions necessary to colonize new spaces: the case for early human dispersal in the Americas

Abstract: During the last decade or so, several authors have discussed human dispersal using mathematical simulations in the Americas (

Cited by 37 publications

References 42 publications

Prehistoric demography of North America inferred from radiocarbon data

Prehistoric demography of North America inferred from radiocarbon data

A Tale of Two Migrations: Reconciling Recent Biological and Archaeological Evidence for the Pleistocene Peopling of the Americas

Continent-Wide Decoupling of Y-Chromosomal Genetic Variation from Language and Geography in Native South Americans

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