I. Estudios Urbanos y Territoriales

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Browsing I. Estudios Urbanos y Territoriales by browse.metadata.categoria "Tecnología"

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    A temporal analysis of the consequences of the drought regime on the water footprint of agriculture in the Guadalupe Valley, Mexico
    (2024) Novoa, Vanessa; Rojas Quezada, Carolina Alejandra; Rojas, Octavio; Ahumada-Rudolph, Ramón; Moreno-Santoyo, Rebeca; CEDEUS (Chile)
    Changes in water availability have a substantial impact on the sustainability and maintenance of agriculture, with water footprint (WF) being a robust methodology to assess these transformations. The Guadalupe Valley is one of the places with the highest agricultural production in Mexico. Despite its semi-arid climatic conditions, it provides high-quality crops that are well-positioned in the world. The historical trend of rainfall and temperatures between 1987 and 2017 was analyzed to identify climatic patterns in the territory. Through the calculations of the water footprint of Grapevine and Olive crops, the sensitivity of the crops to recurrent water deficit and their adaptation in their yields to drought episodes was identified. The reduction in precipitation and occurrence of extreme temperatures have contributed significantly towards augmenting crop evapotranspiration and, consequently, intensifying crop irrigation demands. As a result, there has been an apparent increase in the consumption of WFagricultural since 2007. Thus, the period of highest WFagricultural consumption was 2014 (Extremely dry), as opposed to 2011 (Very wet). In particular, the lowest WFgreen consumptions were observed in extremely dry years, that is, > 20% of the WFagricultural intensifying drought events. Therefore, these periods were compensated with higher uses of WFblue and WFgray, which are inversely correlated with precipitation, where vine crops consume 73% more WFagricultural compared to olive plantations, showing greater interannual variability. These results contribute to analyzing the temporal evolution of water consumption for agriculture, providing a basis for rational water use strategies.
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    Bikesharing and ordinary cyclists from Chile: Comparing trips, attitudes, and health-behaviours
    (2024) Mora, Rodrigo; Miranda Marquez, Sebastián; Truffello Robledo, Ricardo; Sadarangani, Kabir P.; CEDEUS (Chile)
    Bikesharing helps citizens solve “the last mile” problem actively and healthily. However, these schemes tend to be located in the affluent and central areas of cities and often demand users to pay by credit or debit cards that are typically out of reach for poor groups, especially in developing countries. Consequently, bikesharing tends to reproduce existing inequalities in cities, leaving vulnerable groups and those living in poor areas with no option to ride bicycles. This study compares bikesharing users and ordinary cyclists from Santiago de Chile in terms of their sociodemographic characteristics, health status, transport-modal patterns, attitudes, and perceptions toward cycling and bikesharing infrastructure. In all, 1272 adult participants (569 bikesharing users and 703 ordinary cyclists, 63% males) responded to a 12-min survey in Santiago de Chile. The main findings show that bikesharing users reported higher educational levels and car ownership than ordinary cyclists, made shorter trips, and cycled less often than ordinary cyclists. However, using shared bikes permits them to comply with nearly 53% of their weekly physical activity recommendations, as nearly 40% of bikesharing trips would be otherwise made by car. Bikesharing users also tend to visit central areas of Santiago and rarely visit less central and affluent zones.
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    While clearing the forests: The social–ecological memory of trees in the Anthropocene
    (2024) Ibarra Eliessetch, José Tomás; Riquelme Maulén, Wladimir Esteban; Bañales Seguel, Camila; Orrego, Gabriel; Salazar Preece, Gonzalo; CEDEUS (Chile)
    The Anthropocene concept raises awareness of human-induced planetary changes but is criticized for being ‘too global’. We examined the social–ecological memory that emerges from people-tree relationships in South American temperate territories, Chile. We integrated dendrochronology (analysis of tree rings of 35 memorial trees; 17 species) with dendrography (participant observation complemented with semi-structured and goalong interviews with 14 interviewees; six women, eight men). We found that assemblages of people–tree relationships reflect marked historical changes in the territory, associated with the historical clearing of forests, which may be imprinted in both tree growth rings and in the social meanings and practices associated with memorial trees. In devastated territories, practices of tree care emphasize interconnectedness, multispecies collaborations, and the blurring of boundaries between humans and otherthan-humans. We discuss some of the interdisciplinary and relational insights of our study, which may prove valuable for future research, political agendas, and educational programs in South America and beyond.