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Doctoral thesis . 2022
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Valoración de servicios y contraservicios de los agroecosistemas: un enfoque de no mercado para los agroecosistemas semiáridos mediterráneos

Agroecosystem services and disservices valuation: a non-market approach for semiarid Mediterranean agroecosystems
Authors: Zabala García, José Ángel;

Valoración de servicios y contraservicios de los agroecosistemas: un enfoque de no mercado para los agroecosistemas semiáridos mediterráneos

Abstract

[SPA] Esta tesis doctoral se presenta bajo la modalidad de compendio de publicaciones. La contribución de la agricultura al bienestar humano va más allá de la mera producción de alimentos y materias primas. También abarca la provisión de bienes y servicios de no mercado que pueden tener impacto, positivo o negativo, en el bienestar humano. Así, la agricultura es la principal actividad desarrollada al amparo de los agroecosistemas, donde la presión antrópica de las prácticas agrícolas afecta a su funcionamiento y a los niveles de provisión de servicios y contraservicios ecosistémicos. La valoración económica de estos servicios y contraservicios, y en consecuencia de las prácticas agrícolas que los fomentan, permite orientar las decisiones de política agrícola de acuerdo a la contribución de los agroecosistemas al bienestar humano. En este contexto, la presente tesis doctoral tiene como objetivo central la valoración económica de la demanda social de servicios y contraservicios de los agroecosistemas, así como de las prácticas agrícolas que los promueven. Para ello, y utilizando experimentos de elección como metodología principal, se formula un enfoque integral para la valoración de agroecosistemas en una región semiárida del Mediterráneo, la Región de Murcia (sudeste de España). La validación de este enfoque es llevada a cabo por parte de los agentes implicados en su gestión y permite seleccionar los servicios y contraservicios más importantes, cuya demanda social y valor de no mercado son posteriormente estimados. Más allá de las cifras concretas, los resultados ofrecen una visión amplia sobre el enfoque necesario en las políticas agrícolas para que logren aumentar el bienestar de la sociedad. Así, las acciones de política agrícola deberían centrarse en aumentar la provisión de alimentos, promover la biodiversidad de los agroecosistemas, reducir la temperatura local, generar oportunidades para el ocio y recreo en los paisajes agrícolas, mientras se busca regular el suministro de agua para riego y mitigar la contaminación por nutrientes agrícolas. En relación a este último aspecto, en esta tesis también se aborda la evaluación de la demanda social de medidas agrícolas con el fin de reducir la contaminación por nitratos de la agricultura. Todas las medidas propuestas, pese a la heterogeneidad detectada en su demanda, contaron con apoyo social, lo que ha de brindar orientación a los gestores públicos para el establecimiento de estrategias para la mitigación de la contaminación agrícola por nitratos que sean socialmente respaldadas. Así se espera que esta tesis proporcione una mejor comprensión de los vínculos entre agricultura y bienestar humano, orientando la formulación de políticas mejor informadas y eficaces en aras de su contribución al bienestar social. [ENG] This doctoral dissertation has been presented in the form of thesis by publication. The contribution of agriculture to human wellbeing goes beyond food production. It also encompasses the provision of non-commodity goods and services that may impact human wellbeing both positively and negatively. Agriculture is the main activity developed within agroecosystems, where human pressures, mainly through agricultural practices, affect their innate functioning. This leads to the provision of agroecosystem services and disservices. Economic valuation of agroecosystem services and disservices, and agricultural practices in accordance, allow us to guide policy decisions in line with the contribution of agroecosystems to human wellbeing. In such a context, this thesis aims to economically evaluate the integrated social demand of agroecosystem services and disservices, and the agricultural practices that promotes them, by adapting a comprehensive approach for agroecosystem valuation in a semiarid Mediterranean region – the Region of Murcia (SE Spain). Discrete choice experiment was the central methodology used. The non-market value of agroecosystem services and disservices, and consequently, of agricultural practices impacting on them, was disentangled aiming to reflect the contribution of agroecosystems to human wellbeing in monetary terms. The validation of a comprehensive approach for agroecosystem valuation by stakeholders settled the agroecosystem services and disservices whose social demand and non-market value was then estimated. Regardless of the specific economic values, the non-market results provide deep insight into the expected focus of agricultural policies for increasing their impact on human wellbeing. Agricultural measures should therefore be centred around increasing food provision, promoting agroecosystem biodiversity, reducing the local temperature, generating opportunities for recreation in agricultural landscapes, whilst seeking to regulate water supply for irrigation and mitigate agricultural nutrient pollution. In accordance with the latter, the social demand for agricultural measures aiming to reduce nitrate pollution from agriculture was addressed. Despite the great preference heterogeneity, social support was revealed to the measures, providing guidance for policy makers in the establishment of socially supported strategies for agricultural nitrate pollution mitigation. To conclude, this thesis expects to provide better insight into the links between agriculture and human wellbeing, in the hopes that better- informed policy actions will, therefore, be developed that aim to boost human wellbeing.

Esta tesis doctoral se presenta bajo la modalidad de compendio de publicaciones. Está formada por un total de tres artículos: Article 1.-: Zabala, J.A., Martínez-Paz, J.M., Alcon, F., 2021. A comprehensive approach for agroecosystem services and disservices valuation. Science of The Total Environment 768, 144859. https://doi.org/10.1016/j.scitotenv.2020.144859. Q1. IF 7.963. Article 2.-: Zabala, J.A, Martínez-Paz, J.M., Alcon, F., 2021. Integrated valuation of semiarid Mediterranean agroecosystem services and disservices. Ecological Economics 184, 107008. https://doi.org/10.1016/j.ecolecon.2021.107008. Q1. IF 5.389 Article 3.-: Alcon, F., Zabala, J.A., Martínez-Paz, J.M., 2022. Assessment of social demand heterogeneity to inform agricultural diffuse pollution mitigation policies. Ecological Economics 191, 107216. https://doi.org/10.1016/j.ecolecon.2021.107216. Q1. IF 5.389.

Escuela Internacional de Doctorado de la Universidad Politécnica de Cartagena

Programa Doctorado en Ciencias Económicas, Empresariales y Jurídicas

Universidad Politécnica de Cartagena

Country
Spain
Related Organizations
Keywords

Heterogeneidad social, Human wellbeing, Environmental economics, Agricultura, Agriculture, 3308 Ingeniería y Tecnología del Medio Ambiente, Bienestar humano, Experimentos de elección, 5306.01 Economía Investigación y desarrollo Experimental, Economía, Sociología y Política Agraria, Preference heterogeneity, Non-market valuation, Discrete choice experiment, 5102.01 Agricultura, Valoración de no mercado, Economía ambiental

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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Italian National Biodiversity Future Center