tions in Eurasia and Beringia were almost exactly balanced by the gain in human biomass.
However, global megafauna biomass crashed dramatically between 15 and 11.5 kyr B.P. The crash reflects the second pulse of extinction in Eurasia–Beringia and the major extinction pulse in North and South America. This crash is evident in every one of the sensitivity tests, so it does not appear to be a computation artifact. The crash also remains evident when the biomass added by domestic species that support humans—pigs, sheep, goats, cattle—are included beginning 11 kyr B.P. Even using unreasonably high proportions of domesticates to humans (i.e., assuming today’s
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12 Megafauna Biomass Tradeoff as a Driver of Quaternary and Future Extinctions--ANTHONY D. BARNOSKY ."
In the Light of Evolution, Volume II: Biodiversity and Extinction . Washington, DC: The National Academies Press,
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