There is evidence that the ways fires were created and maintained changed along with the intensity of occupation.
For each of these three periods, the duo calculated three different proxies for population numbers: The number of sites, the size of each site, and what the authors term the "intensity of occupation," indicated by the number of stone tools found and the amount of meat consumed as estimated from the bones that Neandertals and modern humans left behind.
But James O'Connell, an anthropologist at the University of Utah in Salt Lake City, cautions that the study assumes Neandertals and moderns used their sites in the same way, whereas studies of modern hunter-gatherers indicate that site size and intensity of occupation can vary according to cultural factors that do not necessarily correspond to population numbers.
In addition, following (Goos et al. (2010), tables 6A, 6B and 7) and Autor and Dorn (2013), we also use a routinization index in a separate regression, which combines the previous three measures to create an index of routine task-intensity by occupation, which is defined as follows: begin{aligned} Routinization,Index=Log {Routine,Intensity})- log ({Abstract,Intensity}) -log ({Service,Intensity}).
Finally, "Non-routine Service Intensity" of occupations is positively and significantly correlated with the change in the share of employment.
At Franchthi Cave, the intensity of occupations of the cave increased in tandem with intensified use of animal and plant resources.
When separating out the different task intensities, there is no significant correlation between the change in the share of employment and the "Abstract Intensity" of occupations.
On the other hand, "Routine Intensity" of occupations exhibits a clearly negative correlation with the change in the share of employment in the recession period.
Human mobility is monitored by reconstructing site occupation intensity using zooarchaeological measures of dietary breadth and prey mortality.
However, there were significant differences in the occupation, intensity and direction of change depending on the biome and protection level.
The richness of shell types that were collected as raw material correlates to greater exploitation of edible marine shellfish and greater occupation intensity.
