Fig. 6.

Coupled plant wax isotope records of hydroclimate and land use change from (A) Lake Chichancanab and (B) Lake Salpeten, alongside (C) estimates of population in the Lake Salpeten catchment (56) and population density in the central portion of the southern Maya Lowlands (57). The δD_wax-corr and δ¹³C_wax records in A and B are fit to a smoothing spline (thicker lines) to highlight centennial-scale trends. Colored envelopes indicate 1σ error applied to the smoothing spline fits for δD_wax-corr (±7‰) and δ¹³C_wax (±0.5‰). Estimates of percent C₄ plants are discussed in SI Text.