Browsing by Author "Mcrostie, Virginia"

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    Formative Period in Tarapaca (3000-1000 BP): Archeology, nature and culture in the Pampa del Tamarugal, Atacama Desert, northern Chile
    (CAMBRIDGE UNIV PRESS, 2020) Uribe, Mauricio; Angelo, Dante; Capriles, Jose; Castro, Victoria; Eugenia de Porras, Maria; Garcia, Magdalena; Gayo, Eugenia; Gonzalez, Josefina; Jose Herrera, Maria; Izaurieta, Roberto; Maldonado, Antonio; Mandakovic, Valentina; Mcrostie, Virginia; Razeto, Jorge; Santana, Francisca; Santoro, Calogero; Valenzuela, Jimena; Vidal, Alejandra
    In this article, we illustrate the relationships that human societies established with their environment during the Formative period in the Pampa del Tamarugal (3000-1000 BP), Atacama Desert, Chile. We employed a theoretical-methodological perspective that emphasizes the explanatory potential of ecofacts. By mediating between humans and environment, this perspective provides a better understanding of how these societies constructed nature and culture. The purpose is to show that this process was part of a long history of rationalization of the desert, its resources, and the lived experience of the Formative communities that occupied that landscape. Therefore, we propose that this human intervention in Pampa del Tamarugal can be understood not only as an ecological and economic change but also a "cosmological" one.
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    The first peoples of the Atacama Desert lived among the trees: A 11,600-to 11,200-year- old grove and congregation site
    (2024) Ugalde, Paula C.; Joly, Delphine; Latorre, Claudio; Gayo, Eugenia M.; Labarca, Rafael; Simunovic, Mikhaela; Mcrostie, Virginia; Holliday, Vance T.; Quade, Jay; Santoro, Calogero M.
    In deserts, water has been singled out as the most important factor for choosing where to settle, but trees were likely an important part of the landscape for hunter - gatherers beyond merely constituting an economic resource. Yet, this critical aspect has not been considered archaeologically. Here, we present the results of mapping and radiocarbon dating of a truly unique archaeological record. Over 150 preserved stumps around five Late Pleistocene/ Early Holocene archaeological campsites (12,800 to 11,200 cal BP) show that trees were key features in the creation of everyday habitats for the first inhabitants of the Atacama Desert. At two of these sites, QM12 and QM35, the spatial and chronological correlation between trees and hearths reveals that people located their homes under the tree canopy. At residential site QM35, artifact distribution coincides with a grove dated to - 11,600 to 11,200 cal BP. A third residential area (QM32) occurred along the grove margins - 12,000 to 11,200 cal BP. Based on the distinct cultural material of these two camps, we propose that two different groups intermittently shared this rich wetland - grove environment. The tree taxa suggest a preference for the native Schinus molle, a tree scarcely present on the landscape today, over the endemic, nitrogen - fixing Strombocarpa tamarugo , both for toolmaking and firewood and even though the S. tamarugo was locally more abundant. Together with the spatial and chronological coincidence of campsites, hearths, and trees, we propose that people spared the most abundant and resilient species to create their homes, in turn promoting fertility oases amid the Atacama's hyperaridity.
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    Towards understanding human-environment feedback loops: the Atacama Desert case
    (2024) Gayo, Eugenia M.; Lima, Mauricio; Gurruchaga, Andone; Estay, Sergio A.; Santoro, Calogero M.; Latorre, Claudio; Mcrostie, Virginia
    The overall trajectory for the human-environment interaction has been punctuated by demographic boom-and-bust cycles, phases of growth/overshooting as well as of expansion/contraction in productivity. Although this pattern has been explained in terms of an interplay between population growth, social upscaling, ecosystem engineering and climate variability, the evoked demographic-resource-complexity mechanisms have not been empirically tested. By integrating proxy data for population sizes, palaeoclimate and internal societal factors into empirical modelling approaches from the population dynamic theory, we evaluated how endogenous (population sizes, warfare and social upscaling) and exogenous (climate) variables module the dynamic in past agrarian societies. We focused on the inland Atacama Desert, where populations developed agriculture activities by engineering arid and semi-arid landscapes during the last 2000 years. Our modelling approach indicates that these populations experienced a boom-and-bust dynamic over the last millennia, which was coupled to structure feedback between population sizes, hydroclimate, social upscaling, warfare and ecosystem engineering. Thus, the human-environment loop appears closely linked with cooperation, competition, limiting resources and the ability of problem-solving.This article is part of the theme issue 'Evolution and sustainability: gathering the strands for an Anthropocene synthesis'.