RT Journal Article SR Electronic T1 Rise and Fall of the Beringian Steppe Bison JF Science JO Science FD American Association for the Advancement of Science SP 1561 OP 1565 DO 10.1126/science.1101074 VO 306 IS 5701 A1 Shapiro, Beth A1 Drummond, Alexei J. A1 Rambaut, Andrew A1 Wilson, Michael C. A1 Matheus, Paul E. A1 Sher, Andrei V. A1 Pybus, Oliver G. A1 Gilbert, M. Thomas P. A1 Barnes, Ian A1 Binladen, Jonas A1 Willerslev, Eske A1 Hansen, Anders J. A1 Baryshnikov, Gennady F. A1 Burns, James A. A1 Davydov, Sergei A1 Driver, Jonathan C. A1 Froese, Duane G. A1 Harington, C. Richard A1 Keddie, Grant A1 Kosintsev, Pavel A1 Kunz, Michael L. A1 Martin, Larry D. A1 Stephenson, Robert O. A1 Storer, John A1 Tedford, Richard A1 Zimov, Sergei A1 Cooper, Alan YR 2004 UL http://science.sciencemag.org/content/306/5701/1561.abstract AB The widespread extinctions of large mammals at the end of the Pleistocene epoch have often been attributed to the depredations of humans; here we present genetic evidence that questions this assumption. We used ancient DNA and Bayesian techniques to reconstruct a detailed genetic history of bison throughout the late Pleistocene and Holocene epochs. Our analyses depict a large diverse population living throughout Beringia until around 37,000 years before the present, when the population's genetic diversity began to decline dramatically. The timing of this decline correlates with environmental changes associated with the onset of the last glacial cycle, whereas archaeological evidence does not support the presence of large populations of humans in Eastern Beringia until more than 15,000 years later.