“…Summed probability plots based on the averaged occupational events at El Chueco 1 site and at valley scale were used for comparing human occupations with fire-episode frequencies and magnitudes reconstructed from the Lake Shaman record (Figure 5). The following was observed from the fire-episode frequencies: (1) despite the availability of fuel, no fires were recorded prior to the onset of human presence in the CRV at 11,500 cal years BP; (2) from 10,500 to 8000 cal years BP, moderate fire frequencies occur, coinciding with redundant, lowintensity occupational events at El Chueco 1 site; (3) between 8000 and 7000 cal years BP, no fire episodes or absent to low fire-episode frequency were recorded, coinciding with no 14 Cbased occupations and a lack of human-made features, bone remains and artifact deposition at El Chueco 1; (4) at 7000 cal years BP fire episodes reappear at a moderate frequency alongside human signs at El Chueco 1 and other sites in the upper CRV; (5) high fire-episode frequencies were observed concomitant with the occurrence of multiple occupational events in the upper and middle CRV between 3000 and 2300 cal years BP (Méndez and Reyes, 2008;Méndez et al, 2016), and (6) high fire-episode frequencies were observed associated with higher intensity of occupations e.g., larger sites (Velásquez et al, 2007), higher artifact frequencies (Contreras et al, 2016), more site variability (Reyes et al, 2009) including local burials (Reyes and Méndez, 2010), and the use of local lithic resources (Gómez and Méndez, 2015) in the upper CRV between 1500 and 400 cal years BP.…”