Variations in small game hunting along the northern and eastern rims of the
Mediterranean Sea and results from predator-prey simulation modeling indic
ate that human population densities increased abruptly during the late Midd
le Paleolithic and again during the Upper and Epi-Paleolithic periods. The
demographic pulses are evidenced by increasing reliance on agile, fast-repr
oducing partridges, hares, and rabbits at the expense of slow-reproducing b
ut easily caught tortoises and marine shellfish and, concurrently, climate-
independent size diminution in tortoises and shellfish. The results indicat
e that human populations of the early Middle Paleolithic were exceptionally
small and highly dispersed.