Fig. 4.

Faunal diversity at Saint-Césaire and its presumed impact on human densities. (A) Large mammal versus micromammal species diversity, as measured by the reciprocal of Simpson's index, in the Saint-Césaire levels. Data are from Table 2 (EJOP inf and EJO inf assemblages excluded because of small sample size). (B) Hypothetical reconstruction of fluctuations of hunter–gatherer densities in western Europe during the Late Pleistocene. The reconstruction is based on an extrapolation of the presumed effects of mammal diversity on human population densities. The shaded area shows the transition between the Châtelperronian and the Early Aurignacian.