ABSTRACT. We report a study of central Maya lowland dynastic information networks, i.e., six cities' external elite ceramic influences, and how they reflect the decision-making practices of Maya elites over 3000 years. Forest cover, i.e., Moraceae family pollen, was added to the network analysis to provide ecological boundary conditions, thus ecologically moderated information networks. Principal components analysis revealed three dominant patterns. First, the networking of interior cities into powerful polities in the Late Preclassic and Classic periods (400 BCE-800 CE). In a second pattern, coastal cities emerged as key entrepôts based on marine navigation (Terminal and Postclassic periods, 800-1500 CE). Climate dynamics and sustainability considerations facilitated the transition. Forest cover, a measure of ecosystem health, shows interior forests diminished as interior cities networked but rebounded as their networks declined. By contrast, coastal forests flourished with networks implying that the marine-based economy was sustainable. Third, in the Classic, the network-dominant coast, west or east, changed with interior polities' political struggles, the critical transition occurring after 695 CE as Tikal gained dominance over the Calakmul-Caracol alliance. Beginning with the Late Preclassic about 2000 years ago, it is possible to assign names to the decision makers by referencing the growing literature on written Maya records. Although the detectable decision sequence evident in this analysis is very basic, we believe it does open possible avenues to much deeper understanding as the study proceeds into the future. The Integrated History and Future of People on Earth-Maya working group that sponsored the analysis anticipates that it will provide actionable social science intelligence for future decision making at the global scale.
Key Words: central Maya lowlands; ceramics; complex-adaptive systems; distribution analysis; forest cover; principal components analysis
INTRODUCTIONA network analysis of elite pottery types associated with the archaeological records of multiple sites in the central Maya lowlands can be used to illustrate changing degrees of connectedness between these sites over time. We assume that tracking degrees and duration of connectedness are a means to understand the sustainability of systems that operated at these sites. The method that was utilized collected a uniform data set on information exchange among a sample of communities across the region. Principal components analysis (PCA) was then used to determine changing patterns of network cooperation across space and time as mirrored in material culture. This quantitative analysis is further amplified through the use of Maya historical records that provide information relative to decision making over the same temporal span. Based on the patterns observed in these data sets, it is possible to (1) clarify the kind and strength of relations among communities in the central Maya lowlands and communities outside the region; (2) understand how...