The site of Cancuen held a strategic position as "head of navigation" of the Pasión River and the physical nexus of land and river routes between the southern highlands, the Maya lowlands, and the transversal route to Tabasco and Veracruz. For that reason, the well-defined ports of Cancuen were critical to both Classic Maya highland/lowland commerce and interactions with the far west. All aspects of Cancuen were related to its role as a port city. By the late eighth century, evidence suggests that in the site epicenter peninsula ports and other aspects of the economy were elite controlled and supervised, based on associated architectural complexes, artifacts, imports, and placement. Recent evidence indicates that, in addition to previously discussed long-distance exchange in exotics such as jade and pyrite, Cancuen also was involved in very large-scale obsidian transport and production, as well as probable exchange of other piedmont commodities such as cacao, cotton, salt, achiote (Bixa orellana), and vanilla.Distribution of architectural, epigraphic, and iconographic evidence and an administrative/ritual palace all indicate growing roles for nobles in these economic activities, particularly the ports. It would appear that, as elsewhere, nobles were taking a more direct mercantile role and that many aspects of the multepal system of power, characteristic of Postclassic period societies, were already in place at Cancuen by the late eighth century. The failure of Cancuen's early transition to a Terminal Classic political economy may be related to its dependence on highland resources and overextended trade networks.

Chronology is a crucial issue given the specific settlement patterns of the Río Bec region located on the northern fringe of the Maya central lowlands. Fine-resolution chronology of the local residential occupation in its many spatial and temporal forms is one of the main proxies available to reconstruct social organization and dynamics, in the absence of a nucleated center with the typical Maya political monuments usually investigated. Variability can be traced in residential morphologies and evolution that must be dated. The scope of the paper aims to describe the construction of the Río Bec chronology in its multiple dimensions, based on a diversity of methods from ceramic TypeVariety classification up to seriation of building sequences defining the evolution of the famous Río Bec architectural style. Epigraphic evidence exists, albeit limited and ambiguous. The general sequence of occupation for the targeted micro-region stretches from the Middle Preclassic to the end of the Terminal Classic period.

This work focuses on the impact of Maya agriculture on soil degradation. In site and out site studies in the area of the city of La Joyanca (NW Petén) show that "Maya clays" do not constitute a homogeneous unit, but represent a complex sedimentary record. A high resolution analysis leads us to document changes in rates and practices evolving in time in relation with major socio-political and economic changes. It is possible to highlight extensive agricultural practices between Early Pre-classical to Late Pre-classical times. Intensification occurs in relation with reduction of the fallow duration during Pre-classic to Classic periods. The consequences of these changes on soil erosion are discussed. However, it does not seem that the agronomic potential of the soils was significantly degraded before the end of the Classic period.

El sitio arqueológico Cancuén se destaca en el área maya del Clásico Tardío por su localización en el río de la Pasión, entre las Tierras Altas y las Bajas de Guatemala; desde allí la ciudad controló parte del flujo de bienes entre ambas áreas. Esto pudo comprobarse a través de la excavación de un taller de manufactura de artefactos de jade, cuya existencia fue un hecho único en las ciudades de Bajas. El estudio de la cerámica de este sitio presenta un doble reto: primero, ubicar culturalmente, revelando una mezcla de influencias cerámicas procedentes de varias regiones vecinas. Una presentación sintética de la tipología permite vislumbrar la complejidad de las redes de intercambio y producción local de las vasijas. El segundo reto es el de establecer una cronología fina para los apenas 150 años de duración de la ocupación del sitio. La confrontación de la tipología cerámica con los datos epigráficos y los eventos políticos locales, permite establecer una secuencia cronológica completa, una de las primeras para esta zona fronteriza entre Tierras Bajas y Altas.

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