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2016 ; 11
(5
): e0154641
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Population Dynamics of Early Human Migration in Britain
#MMPMID27148959
Vahia MN
; Ladiwala U
; Mahathe P
; Mathur D
PLoS One
2016[]; 11
(5
): e0154641
PMID27148959
show ga
BACKGROUND: Early human migration is largely determined by geography and human
needs. These are both deterministic parameters when small populations move into
unoccupied areas where conflicts and large group dynamics are not important. The
early period of human migration into the British Isles provides such a laboratory
which, because of its relative geographical isolation, may allow some insights
into the complex dynamics of early human migration and interaction. METHOD AND
RESULTS: We developed a simulation code based on human affinity to habitable
land, as defined by availability of water sources, altitude, and flatness of
land, in choosing the path of migration. Movement of people on the British island
over the prehistoric period from their initial entry points was simulated on the
basis of data from the megalithic period. Topographical and hydro-shed data from
satellite databases was used to define habitability, based on distance from water
bodies, flatness of the terrain, and altitude above sea level. We simulated
population movement based on assumptions of affinity for more habitable places,
with the rate of movement tempered by existing populations. We compared results
of our computer simulations with genetic data and show that our simulation can
predict fairly accurately the points of contacts between different migratory
paths. Such comparison also provides more detailed information about the path of
peoples' movement over ~2000 years before the present era. CONCLUSIONS: We
demonstrate an accurate method to simulate prehistoric movements of people based
upon current topographical satellite data. Our findings are validated by
recently-available genetic data. Our method may prove useful in determining early
human population dynamics even when no genetic information is available.
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