Grupo de Investigaciones Hidrológicas para el Desarrollo de la Región Amazónica (G-IHDRA)

Permanent URI for this collectionhttps://repositorio.ucb.edu.bo/handle/20.500.12771/175

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Start date: 2020End date: 2024

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    Impacts of Wildfires on Groundwater Recharge: A Comprehensive Analysis of Processes, Methodological Challenges, and Research Opportunities
    (2024) Guzmán Rojo, Mónica; Fernandez, Jeanne; D’Abzac, Paul; Huysmans, Marijke; Department of Water and Climate, Vrije Universiteit Brussel; Department of Earth Sciences, Uppsala University; Centro de Investigación en Ciencias Exactas e Ingenierías, Universidad Católica Boliviana San Pablo, Cochabamba, Bolivia; Centro de Investigación para el Desarrollo Sostenible del Oriente Boliviano, Universidad Católica Boliviana San Pablo. Santa Cruz de la Sierra, Bolivia
    ncreasing wildfire activity has led to complex ecosystem consequences, with direct effects on the subsystems that affect the presence and movement of water. Although studies have inves- tigated the cascading effects of wildfires on the water balance, our understanding of broad-scale groundwater modifications post fire remains unclear. This review aims to elucidate fire-induced shifts in the water balance, their causal factors, and their potential effects on groundwater recharge. By scrutinizing prior research examples that modeled post-fire recharge scenarios, the review highlights persistent knowledge gaps. The challenge of quantifying and integrating fire-induced alterations in precipitation, wind, and land temperature patterns into recharge projection models is specifically addressed. Despite these gaps, post-fire values of hydrologically meaningful parameters such as leaf area index (LAI), curve number (CN), and near-surface saturated hydraulic conductivity (KST) have been identified. Simulating post-fire recharge via the extrapolation of these values requires the consideration of site-specific conditions, vegetation recovery, and ash removal. It frequently results in a reduced interception and increased surface runoff, while evapotranspiration remains dependent on site-specific factors and often dictates groundwater recharge estimates. Although post-fire recharge simulations are inherently complex and imprecise, their growing application can guide land-use alterations and support policy implementation that considers fire-induced water availability changes
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    Combining hands-on and virtual experiments for enhancing fluid mechanics teaching: A design-based research study
    (2022) Gutierrez, Ronald R.; Escusa, Frank; Lyon, Joseph A.; Magana, Alejandra J.; Cabrera, Jose H.; Pehovaz, Richard; Link, Oscar; Rivillas-Ospina, German; Acuña, Guillermo J.; Kuroiwa, Julio M.; Guzmán, Mónica; Latosinski, Francisco G.
    Fluid Mechanics courses comprise both theoretical and laboratory modules. In developing nations, computer-assisted techniques are not commonly applied in Fluid Mechanics instruction. Forced by the COVID-19 pandemic, South American universities are, however, using them for online teaching. This contribution presents an 8-semester (2016–2019) educational intervention over an undergraduate Fluid Mechanics course. It mainly blends physical (hands-on) and virtual experiments (computer fluid dynamics-based simulations) for the laboratory module, which are complemented by flipped classroom-based prompts for the theoretical module. The intervention follows design-based research as a research method and is guided via conjecture mapping and fidelity of implementation standards. Our results suggest that the intervention improves fluid mechanics laboratory instruction, although improvements depend upon the participation of other educational actors such as teaching assistants and laboratory technicians to some extent. Laboratory report grades (the assessment instrument) follow the Gompertz probability distribution. Following UNESCO standards, a portion of the intervention output is shared as open educational resources. This contribution encourages upscaling the educational intervention through the formation of cooperative clusters to build common-pool Fluid Mechanics resources. Learning scientists have underlined the need to better understand laboratory instruction processes. They have been addressed in very few instances in developing countries. We believe that this study has the potential to provide valuable insights on the matter.
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    Estimating The Effect Of Wildfires On Groundwater Recharge Rates Through Soil Water Balance Models
    (2021) Guzmán, Mónica; D’Abzac, Paul; Huysmans, Marijke
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