Fig 1.
Overall map of the Aegean Sea region.
Data Source: Natural Earth [32].
Fig 2.
Two forms of maritime network based on a critical analysis of Pascal Arnaud’s collection of ancient navigational guides [49].
A–a static network in which each node is a port (the size of each symbol reflects the calculated centrality value); B–a complex and more realistic geographical network. Data Source: Natural Earth [32].
Fig 3.
Temporally relevant Ptolemaic military garrisons and temples of Egyptian gods in the area of interest displayed on the background of a complex transport network with ports.
Garrisons are represented by stars and temples by squares. Data Source: Natural Earth [32].
Fig 4.
Schema of the environmental model.
Fig 5.
Food shortage vulnerability–output from the environmental model.
Islands with a darker shade of orange colour (and lower number) are more vulnerable to food shortages. Data Source: Natural Earth [32].
Fig 6.
Visualization of the data described in the Methods section.
The diagonal includes the frequency histograms of the analysed variables; above the diagonal are their pairwise correlations (Spearman rank correlation coefficients), below the diagonal are dot-plots of the variable pairs complemented by non-parametric estimates of their “dependence”.
Table 1.
Variance in spatial intensity of Egyptian cults explained by selected factors.