Future water availability in dryland ecosystems in southern Peru and northern Chile

Pino-Vargas, Edwin; Montalvan-Díaz, Isaac; Jihuallanga, César Avendaño

doi:10.17268/agroind.sci.2019.02.10

Cited by 3 publications

(3 citation statements)

References 33 publications

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“…De acuerdo con el estudio de zonificación realizado por el Ministerio del Ambiente (MINAM, 2013), el 54,92 % de cuenca Quebrada del Diablo son tierras marginales áridas de escasa vegetación sin uso y el 39,64 % tierras con praderas no mejoradas. Las temperaturas medias anuales máxima y mínima para el período 1950-2019, son de 23,6 • C y 12,7 • C, respectivamente [9,10].…”

Section: Descripción Del áRea De Estudiounclassified

Predicción espacial de la erosión del suelo en zonas áridas mediante teledetección. Estudio de caso: Quebrada del Diablo, Tacna, Perú

et al. 2021

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La presente investigación trata sobre la evaluación de la erosión hídrica del suelo en una zona árida de la región Tacna al sur de Perú, tomando como caso de estudio la Quebrada del Diablo. Se usaron los modelos USLE (Universal Soil Loss Equation) y RUSLE (Revised Universal Soil Loss Equation) en conexión con sistemas geográficos de información (GIS) y técnicas de teledetección. Los factores R, K, LS, C y P de los modelos fueron calculados a partir de información pluviométrica local registrada en tres estaciones y de datos provenientes de sensores remotos integrados mediante el GIS, obteniendo así una simple y efectiva herramienta para determinar mapas, áreas y tasas de erosión. Los resultados indican que la máxima tasa de erosión hídrica, debido a la precipitación extraordinaria ocurrida el año 2020, calculada mediante ambos modelos, varía de 0 a 50 t/ha/año, variación considerada en el rango bajo, ligero y moderado. Los modelos USLE y RUSLE arrojan un potencial de erosión menor a 10 t/ha/año para el 71,81 % y el 45,27 % del área de estudio, respectivamente; para tazas de erosión mayores a 10 t/ha/año las áreas calculadas con el modelo RUSLE superan a los estimados con el modelo USLE.

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Section: Descripción Del áRea De Estudiounclassified

Predicción espacial de la erosión del suelo en zonas áridas mediante teledetección. Estudio de caso: Quebrada del Diablo, Tacna, Perú

et al. 2021

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“…Agroindustrial Science, 2019 [61] Multidisciplinary study for the assessment of the geometry, boundaries, and preferential recharge zones of an overexploited aquifer in the Atacama Desert (Pampa del Tamarugal, Northern Chile)…”

Section: Article Journal Year Referencementioning

confidence: 99%

Impacts of Groundwater Management Policies in the Caplina Aquifer, Atacama Desert

Pino-Vargas

Espinoza-Molina

Chávarri

et al. 2023

Water

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Groundwater constitutes one of the main sources used to satisfy the water demands of the different users located in a basin. Current groundwater pumping rates in many cases exceed natural recharge, resulting in the overexploitation of aquifers and the deterioration of water quality. Consequently, many aquifer systems in the world have applied and adapted policies to manage the use of groundwater. In this article, we investigate the impacts of groundwater management policies on the Caplina aquifer located in the Atacama Desert, Peru. To evaluate these impacts, we review policies and regulations implemented during the last 40 years. Likewise, more than 25 scientific investigations that were carried out in this aquifer are reviewed and analyzed to understand its hydrodynamics and hydrochemistry, as well as the impact of climate change, among other aspects. The results, based on scientific evidence, show that the current and future conditions of the groundwater of the Caplina aquifer are not sustainable, and likewise, public policies are not effective for reversing this situation. This leads the aquifer system to a situation in which there is a quality degradation of the water, to a point that may be irreversible.

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“…Furthermore, Chilean copper production represents almost a third of the world’s production (de Solminihac, Gonzales, and Cerda 2018). Copper mining operations are located mainly in the northern part of the country, in places with limited water supply (Pino-Vargas, Montalvan-Díaz, and Avendaño-Jihuallanga 2019). This has generated overexploitation of water resources, as the consumption of water by the mining sector can represent more than 50% of total consumption in northern Chile (Aitken et al 2016).…”

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An Economic Evaluation of the Health and Agricultural Damages Caused by Copper Mining in Chile

Campos

Mardones

2022

Lat. Am. res. rev.

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This study assesses the environmental damage caused by copper mining on surface water bodies in Chile. The few official records on the discharges and concentrations of arsenic and copper only allow for identifying the impacts of some mining operations in the regions of Coquimbo, Valparaíso, and O’Higgins. The economic valuation is carried out through the impact pathway approach, which relates copper production, discharges, concentrations, and dose-response coefficients to establish effects on health and agriculture. The results show that the economic damage due to water pollution occurs mainly in the regions of Coquimbo and O’Higgins. The above is explained because the greatest externalities are generated in agricultural areas, while the damage to health is low because of the small population exposed (97.6% versus 2.4%). Finally, total damages represent 0.43%, 0.26%, and 0.0001% of copper sales in the mining operations analyzed in the regions of Coquimbo, O’Higgins, and Valparaíso, respectively.

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Future water availability in dryland ecosystems in southern Peru and northern Chile

Cited by 3 publications

References 33 publications

Predicción espacial de la erosión del suelo en zonas áridas mediante teledetección. Estudio de caso: Quebrada del Diablo, Tacna, Perú

Predicción espacial de la erosión del suelo en zonas áridas mediante teledetección. Estudio de caso: Quebrada del Diablo, Tacna, Perú

Impacts of Groundwater Management Policies in the Caplina Aquifer, Atacama Desert

An Economic Evaluation of the Health and Agricultural Damages Caused by Copper Mining in Chile

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