The role of desalinisation to address aquifer overdraft in SE Spain

Martínez-Granados, David; Calatrava, Javier

doi:10.1016/j.jenvman.2014.06.003

Cited by 17 publications

(11 citation statements)

References 9 publications

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“…The effects of overallocation of water resources are particularly severe in downstream areas, where agriculture is more profitable, water is scarcer, and competition between economic and environmental uses has led to a widespread aquifer depletion (Avellá & García‐Mollá, ). Reallocation from upstream agricultural uses to the environment has been suggested as a means to enhance environmental flows at the least economic cost (Martínez‐Granados & Calatrava, ; Pérez‐Blanco & Gutiérrez‐Martín, ). Yet the economic and environmental repercussions of such intervention have yet to be assessed in an integrated socio‐hydrologic framework.…”

Section: Implications Of Water Policy In a Rational Human‐water Systemmentioning

confidence: 99%

“…In the RMRB, AWDUs offer the lowest spatial disaggregation level with comprehensive and readily available socio‐economic data, hence being considered as the decision‐making socio‐economic agents in this case study. The process of aggregating individual farmers into groups to represent economic agents is well documented in the literature (Gómez‐Limón et al, ; Gutiérrez‐Martín et al, ), also through the use of AWDUs (Martínez‐Granados & Calatrava, ; Pérez‐Blanco & Gutiérrez‐Martín, ). AWDUs may be composed of one or more HERUs, depending on soil, land use, and topographic characteristics of the spatial area the AWDU covers.…”

Section: Implications Of Water Policy In a Rational Human‐water Systemmentioning

confidence: 99%

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Rationalizing Systems Analysis for the Evaluation of Adaptation Strategies in Complex Human‐Water Systems

2018

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Water resources management is a nontrivial process requiring a holistic understanding of the factors driving the dynamics of human‐water systems. Policy‐induced or autonomous behavioral changes in human systems may affect water and land management, which may affect water systems and feedback to human systems, further impacting water and land management. Currently, hydro‐economic models lack the ability to describe such dynamics either because they do not account for the multifactor/multioutput nature of these systems and/or are not designed to operate at a river basin scale. This paper presents a flexible and replicable methodological framework for integrating a microeconomic multifactor/multioutput Positive Multi‐Attribute Utility Programming (PMAUP) model with an eco‐hydrologic model, the Soil and Water Assessment Tool (SWAT). The connection between the models occurs in a sequential modular approach through a common spatial unit, the “hydrologic‐economic representative units” (HERUs), derived from the boundaries of decision‐making entities and hydrologic responsive units. The resulting SWAT‐PMAUP model aims to provide the means for exploring the dynamics between the behavior of socio‐economic agents and their connection with the water system through water and land management. The integrated model is illustrated by simulating the impacts of irrigation restriction policies on the Río Mundo subbasin in south‐eastern Spain. The results suggest that agents' adaptation strategies in response to the irrigation restrictions have broad economic impacts and subsequent consequences on surface and groundwater hydrology. We suggest that the integrated modeling framework can be a valuable tool to support decision‐making in water resources management across a wide range of scales.

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Section: Implications Of Water Policy In a Rational Human‐water Systemmentioning

confidence: 99%

Section: Implications Of Water Policy In a Rational Human‐water Systemmentioning

confidence: 99%

Rationalizing Systems Analysis for the Evaluation of Adaptation Strategies in Complex Human‐Water Systems

2018

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“…En el caso de la alternativa 2 (suministro de agua desalinizada desde la IDAM de Torrevieja), sería necesario subvencionar 0,86 de los 1,27 €/m 3 del coste total del suministro, lo que supondría un coste anual para la administración de 38,8 millones de euros. Por su parte, en el caso de la alternativa 3 (suministro de agua del ATS mediante permuta por caudales desalinizados), la subvención debería de ascender a 0,60 de los 1,00 €/mA diferencia de los resultados obtenidos por Martínez-Granados y Calatrava (2014Calatrava ( , 2017 para la zona del Guadalentín, también en la cuenca del Segura, donde la disponibilidad de agua desalinizada mitigaría el impacto negativo que la reducción de las extracciones de recursos subterráneos tendría para el sector agrario, los resultados aquí obtenidos muestran cómo eliminar las extracciones no renovables de los acuíferos del Altiplano sin proveer de recursos alternativos tendría importantes consecuencias negativas, tanto económicas como sociales, sobre el sector agrario de la zona, al verse drásticamente reducido el uso de agua. El impacto aquí estimado supondría una reducción del margen neto de las explotaciones y de la producción y el empleo agrario directo en la zona de un 48, 55 y 62% respectivamente.…”

Section: -Materiales Y Métodosunclassified

Evaluación Económica Del Aporte De Recursos Externos Para Sustituir Las Extracciones No Renovables De Los Acuíferos Del Altiplano

Calatrava¹,

Martínez-Álvarez²,

Martínez-Granados³

2018

XXXVI Congreso Nacional De Riegos

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“…Albiac et al (2006) show that the most cost-effective alternatives combine the control of illegal abstractions with water trading and desalinisation, whereas pumping restrictions and water pricing have large impacts in terms of farm income, raising social opposition and resulting in failure. Martínez-Granados & Calatrava (2014) analyse alternative policy instruments to eliminate non-renewable pumping in several aquifers of the Segura basin and show that the availability of desalinised water alone may not be effective for reducing groundwater withdrawals, as its price is greater than the cost of groundwater. Therefore, desalinised water resources would have to be heavily subsidised if they are to be a substitute for groundwater.…”

Section: Introductionmentioning

confidence: 99%

“…While Martínez-Granados & Calatrava (2014) consider the separate application of instruments, this study analyses the economic impact of combining several instruments that can be used to eliminate overdraft in the Alto Guadalentín aquifer, one of the most severe cases of groundwater depletion in Europe.…”

Section: Introductionmentioning

confidence: 99%

Combining economic policy instruments with desalinisation to reduce overdraft in the Spanish Alto Guadalentín aquifer

Martínez-Granados

Calatrava

2016

Water Policy

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This paper analyses the cost-effectiveness of combining several economic policy instruments to address the problem of non-renewable pumping in the Alto Guadalentín aquifer in southeastern Spain, one of the most extreme cases of aquifer depletion in Europe. Our results show that all instruments have significant economic impacts. However, the future availability of desalinisation would notably mitigate these impacts, as farmers can substitute groundwater with desalinised water. Although a complete ban on non-renewable pumping and an environmental tax on withdrawals imply the lowest level of public expenditure, they are very unpopular and have a large political cost. The buyback of groundwater rights and the subsidisation of desalinisation in exchange for reducing withdrawals are likely to be much better received by farmers, as their cost would be charged to the public budget. A combination of instruments would split the cost of aquifer recovery between farmers and the administration and would therefore possibly not meet with as much opposition from stakeholders.

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The role of desalinisation to address aquifer overdraft in SE Spain

Cited by 17 publications

References 9 publications

Rationalizing Systems Analysis for the Evaluation of Adaptation Strategies in Complex Human‐Water Systems

Rationalizing Systems Analysis for the Evaluation of Adaptation Strategies in Complex Human‐Water Systems

Evaluación Económica Del Aporte De Recursos Externos Para Sustituir Las Extracciones No Renovables De Los Acuíferos Del Altiplano

Combining economic policy instruments with desalinisation to reduce overdraft in the Spanish Alto Guadalentín aquifer

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