Household Quarry-Reservoirs at the Ancient Maya Site of Yaxnohcah, Mexico

In this study, we present new data from the ancient Maya site of Yaxnohcah in southern Mexico. These data, which are drawn from lidar-based GIS analysis, field inspection, and the excavation of two small, closed depressions, suggest that many of this site's features served a dual function. Quarrying to extract construction materials left behind closed depressions that were then sealed to create household reservoirs. We classify these water-storage features as quarry-reservoirs. The ubiquity of these small quarry-reservoirs represented an important community water source outside the sphere of direct elite control.

THEOLOGY AND ECONOMY IN THE POPOL WUJ AND THEOLOGIA INDORUM

Drawing on modern ethnography, scholars often characterize ancient Maya religion as “covenants” involving human beings generating merit through ritual activity in order to repay a primordial debt to the gods. However, models based on modern ethnography alone would not allow us to recognize the impact on Maya religions of those Christian discourses of debt and merit that accompanied sixteenth-century colonization. This article attempts to historicize our understanding of indigenous Mesoamerican theologies by examining how early Colonial indigenous language texts describe moral and ritual obligations to the gods in terms of their societies’ economies. The specific case study here compares two contemporaneous sixteenth-century K'iche' Maya texts: the Popol Wuj by traditionalist K'iche' elites and the Theologia Indorum by the Dominican friar Domingo de Vico. Comparison of these texts’ use of exchange-related lexicon illustrates that the traditionalist theological discourse of the Popol Wuj, which emphasizes reciprocal obligations between different beings within an ontological hierarchy, came to exist alongside Christian K'iche' discourses with a more mercantile religious language of spiritual debt payment. It is argued that these results have potential implications for our assessment of ethnohistorical sources on indigenous theology from elsewhere throughout Mesoamerica as well.

Harmful algal blooms and cyanotoxins in Lake Amatitlán, Guatemala, coincided with ancient Maya occupation in the watershed

Human-induced deforestation and soil erosion were environmental stressors for the ancient Maya of Mesoamerica. Furthermore, intense, periodic droughts during the Terminal Classic Period, ca. Common Era 830 to 950, have been documented from lake sediment cores and speleothems. Today, lakes worldwide that are surrounded by dense human settlement and intense riparian land use often develop algae/cyanobacteria blooms that can compromise water quality by depleting oxygen and producing toxins. Such environmental impacts have rarely been explored in the context of ancient Maya settlement. We measured nutrients, biomarkers for cyanobacteria, and the cyanotoxin microcystin in a sediment core from Lake Amatitlán, highland Guatemala, which spans the last ∼2,100 y. The lake is currently hypereutrophic and characterized by high cyanotoxin concentrations from persistent blooms of the cyanobacterium Microcystis aeruginosa. Our paleolimnological data show that harmful cyanobacteria blooms and cyanotoxin production occurred during periods of ancient Maya occupation. Highest prehistoric concentrations of cyanotoxins in the sediment coincided with alterations of the water system in the Maya city of Kaminaljuyú, and changes in nutrient stoichiometry and maximum cyanobacteria abundance were coeval with times of greatest ancient human populations in the watershed. These prehistoric episodes of cyanobacteria proliferation and cyanotoxin production rivaled modern conditions in the lake, with respect to both bloom magnitude and toxicity. This suggests that pre-Columbian Maya occupation of the Lake Amatitlán watershed negatively impacted water potability. Prehistoric cultural eutrophication indicates that human-driven nutrient enrichment of water bodies is not an exclusively modern phenomenon and may well have been a stressor for the ancient Maya.

Writing amidst the Scribbles: The Role and Place of Writing in Ancient Maya Graffiti

The significantcorpus of ancient Maya graffiti (c. 200 BC-AD 950) attests to the widespreadpractice of secondarily altering architectural surfaces during the course oftheir use.  For the most part this corpusis highly figurative and includes a series of schematic elements that attest totheir production by the hands of a variety of agents. As one of the largestcorpora of graffiti from any early civilization, the figural representationsinclude a wide array of themes.  Somegraffiti feature complex, narrative scenes that document important moments ofritual life of the ancient Maya. Almost paradoxically, amid the intricate andhighly figurative scenes are hieroglyphic graffiti. What do these writtengraffiti record, and what is the degree of literacy that these attest to? Thisraises a series of interesting questions including whether written and figuralgraffiti were etched onto walls by the same individuals, or whether theserepresent different social segments each leaving their mark. From theseobservations follow a series of important ramifications as to authorship, theuse of the built environment as well as the motivations behind the graffitiitself.