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Emergence of social complexity among coastal hunter-gatherers in the Atacama Desert of northern Chile
Pablo A. Marquet, Calogero M. Santoro, Claudio Latorre, Vivien G. Standen, Sebastián R. Abades, Marcelo M. Rivadeneira, Bernardo Arriaza and Michael E. Hochberg
Proceedings of the National Academy of Sciences of the United States of America
Vol. 109, No. 37 (September 11, 2012), pp. 14754-14760
Published by: National Academy of Sciences
Stable URL: http://www.jstor.org/stable/41706293
Page Count: 7
You can always find the topics here!Topics: Deserts, Mummies, Hunter gatherers, Cultural evolution, Population size, Population growth rate, Latin American culture, Radiocarbon, Technological innovation, Climate change
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The emergence of complex cultural practices in simple huntergatherer groups poses interesting questions on what drives social complexity and what causes the emergence and disappearance of cultural innovations. Here we analyze the conditions that underlie the emergence of artificial mummification in the Chinchorro culture in the coastal Atacama Desert in northern Chile and southern Peru. We provide empirical and theoretical evidence that artificial mummification appeared during a period of increased coastal freshwater availability and marine productivity, which caused an increase in human population size and accelerated the emergence of cultural innovations, as predicted by recent models of cultural and technological evolution. Under a scenario of increasing population size and extreme aridity (with little or no decomposition of corpses) a simple demographic model shows that dead individuals may have become a significant part of the landscape, creating the conditions for the manipulation of the dead that led to the emergence of complex mortuary practices.
Proceedings of the National Academy of Sciences of the United States of America © 2012 National Academy of Sciences