J. Martínez-Valderrama

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Scientific researcher. ORCID 0000-0001-5859-5674

Estación Experimental de Zonas Áridas, CSIC
Campus UAL. Carretera de Sacramento s/n
04120 La Cañada de San Urbano (Almería/Spain)
Phone: +34 950281045
e-mail: jaimonides@eeza.csic.es

 

LINES OF RESEARCH AND METHODS

Desertification, Global Change, Sustainable Development, Integrated Water Management, Pastoral Systems, Groundwater, Food Production, System Dynamics, Vulnerability, Risk Analysis, Scientific Dissemination.

SHORT BIO

Jaime Martínez Valderrama is an expert in the socio-economic study of desertification. The general objective of his research has been to deepen the understanding of the relationships between land use and its impacts in drylands. To this end, he uses integrated models to analyze their stability in different scenarios. Through this analysis, he has developed early warning indicators of desertification risk and quantified the influence of the various factors involved in this degradation process. The main socio-ecosystems studied are pastoral systems and irrigated agriculture linked to groundwater resources. One of the main methodologies used in this work has been System Dynamics (SD), a simulation tool flexible enough to incorporate various types of analysis. In addition, SD allows the construction of practical user interfaces, which has enabled it to transfer the results of its research to various public and private institutions, including the Desertification Early Warning System designed for the Ministry of the Environment.
    This activity has been developed in the CSIC (IEG-CCHS and EEZA; 1998-2018 and 2022-2023) and the University of Alicante (2019-2022), throughout 23 research projects. He is also PI of the ATLAS project, whose mission is to make an Atlas of desertification in Spain, and of a project granted by the Chinese Government to study desertification processes in this country. He has extensive experience in various arid regions (Southern Europe, Africa, Asia, and South America) and has spent time in Chile and Mexico. He has a great vocation for dissemination, with a presence in the media and dozens of articles on desertification, and two books dedicated to it (Deserts and desertification (2015); Desertificación, cuando el territorio hace aguas (2023)). In addition, he has participated in several training courses as a professor, including several editions of the CSIC Master’s degree on Global Change, and is directing a doctoral thesis at the UCAM that follows the original line of research on the search for early warning indicators.
    Due to his experience in desertification, he has been an advisor to MITECO in the design of the National Strategy to Combat Desertification and has been consulted on several occasions by committees of members of the German Parliament on the connections between desertification and food production. He is currently a member of the executive committee of the Connections – ARID ZONES initiative of the CSIC, which aims to coordinate the various institutions and institutions involved in the study of drylands.

PUBLICATIONS

JCR papers

  • Martínez-Valderrama, J.; Gil-Sánchez, J.M.; Herrera Sánchez, J. 2023. La vida sigilosa del desierto. Metode Science Studies Journal 113.
  • Guirado, E.; Delgado-Baquerizo, M.; Benito; B.M.; Molina-Pardo, J.L.; Berdugo, M.; Martínez-Valderrama, J.; Maestre, F.T. 2023. The global biogeography and environmental drivers of fairy circles. PNAS.
  • Martínez-Valderrama, J.; Olcina, J.; Delacámara, G.; Guirado, E.; Maestre, F.T. 2023. A complex policy mix to cope with human-made agricultural water gaps. Water Resources Management. 37: 2805–2834 https://doi.org/10.1007/s11269-023-03481-5
  • Martínez-Valderrama, J.; Ibáñez, J. 2023. Implementing climate change projections in System Dynamics models. MethodsX. 10: 102044. https://doi.org/10.1016/j.mex.2023.102044
  • Herrera-Sánchez, F.J.; López, O.; Rodríguez-Siles, J.; Díaz-Portero, M.A.; Arredondo, A.; Sáez, J.M.; Álvarez, B.; Cancio, I.; De Lucas, J.; Joaquín Pérez, Gerardo Valenzuela, Martínez-Valderrama, J.;  Sánchez-Cerdá,  M.;  Qninba, A.; Virgós,  E.;  Calleja, J.A.; Bartolomé Filella, J.; Albanell, E.; Serrano, E.;  Abáigar, T.;  Gil Sánchez, J.M. 2023. Feeding Ecology of the Cuvier’s Gazelle (Gazella cuvieri) in the Sahara Desert. Animals. 13(4): 567. https://doi.org/10.3390/ani13040567
  • Gil-Sánchez, J. M., Herrera-Sánchez, F. J., Rodríguez-Siles, J., Díaz-Portero, M. Á., Arredondo, Á., Sáez, J. M., Álvarez, B., Canci, I., Lucas, J. de, McCain, E., Pérez, J., Valenzuela, G., Martínez-Valderrama, J., Sánchez-Cerdá, M., Lahlafi, T., Martín, J. M., Burgo, T., Jiménez, J., Qninba, A., & Virgós, E. 2023. Applications of non-intrusive methods to study the sand cat: a field study in the Sahara Desert. European Journal of Wildlife Research, 69: 20. https://doi.org/10.1007/s10344-023-01645-7
  • Martínez-Valderrama, J.; Ibáñez, J. 2023. System Dynamics tools to study Mediterranean rangeland’s sustainability. Land. 12(1): 206. https://doi.org/10.3390/land12010206
  • Maestre, F.T. et al. 2022. Livestock grazing and ecosystem service delivery in global drylands.  Science. 378(6622): 315-320.  https://doi.org/10.1126/science.abq4062
More JCR papers

  • Ibáñez, J.; Gartzia, R.; Alcalá, F.J.; Martínez-Valderrama, J. 2022. The importance of prevention in tackling desertification: an approach to anticipate risks of degradation in coastal aquifers. Land, 11: 1626. https://doi.org/10.3390/land11101626
  • Guirado, E.; Delgado-Baquerizo, M.; Martínez-Valderrama, J.; Tabik, S.; Alcaraz-Segura, D.; Maestre, F.T. 2022. Climate legacies drive the distribution and future restoration potential of dryland forests. Nature Plants, 8: 879-886. https://doi.org/10.1038/s41477-022-01198-8
  • Sanjuán, M.E.; Martínez-Valderrama, J.; Ruiz, A.; del Barrio, G. 2022. Land use intensification affects the relative importance of climate variation and active land degradation: convergence of six regions around the world. Land Degradation & Development, 33(14): 2487-2499 https://doi.org/10.1002/ldr.4326
  • Martínez-Valderrama, J.; Guirado, E.; Maestre, F.T. 2022. Life adapted to precariousness: The ecology of drylands. Metode Science Studies Journal, 112 (1): 59-65. https://doi.org/10.7203/metode.13.22006
  • Martínez-Valderrama, J.; Guirado, E.; Maestre, F.T. 2022. Drylands: Opportunities, challenges and threats. Metode Science Studies Journal, 112 (1): 57. https://ojs.uv.es/index.php/Metode/article/view/24248
  • Martínez-Valderrama, J.; del Barrio, G.; Sanjuán, M.E.; Guirado, E.; Maestre, F.T. 2022. Desertification in Spain: A sound diagnosis without solutions and new scenarios. Land, 11(2): 1020272 doi: https://doi.org/10.3390/land11020272.
  • Alcalá, F.J.; Martínez-Valderrama, J.; Gomáriz-Castillo, F.; Hernández, C.G.; Cecilia, J.M. 2021. Scientific Programming Tools for Water Management. Scientific Programming. 2021. 9828596. https://doi.org/10.1155/2021/9828596
  • del Barrio, G.; Sanjuán, E.; Martínez-Valderrama, J.; Ruiz, A.; Puigdefábregas, J. 2021. Land degradation: means loss of management options. Journal of Arid Environment. 189: 104502. https://doi.org/10.1016/j.jaridenv.2021.104502
  • Guirado, E., Blanco-Sacristán, J., Rodriguez-Caballero, E., Tabik, S., Alcaraz-Segura, D., Martínez-Valderrama, J., Cabello, J. 2021. Mask R-CNN and OBIA Fusion Improves the Segmentation of Scattered Vegetation in Very High-resolution Optical Sensors. Sensors. 21 (1): 320. https://doi.org/10.3390/s21010320
  • Martínez-Valderrama, J., Sanjuán, M.E.; del Barrio, G.; Guirado, E., Ruiz, A.; Maestre, F.T. 2021. Mediterranean landscape re-greening at the expense of South American agricultural expansion. Land. 10(2): 204. https://doi.org/10.3390/land10020204
  • del Barrio, G.; Sainz, H.; Sanjuán, M.E.; Sánchez de Dios, R.; Martínez-Valderrama, J.; Ruiz, A. 2021. Abrupt fragmentation thresholds of eight zonal forest types in mainland Spain. Forest Ecology and Management. 482: 118788. https://doi.org/10.1016/j.foreco.2020.118788
  • Martínez-Valderrama, J.; Ibáñez, J.; Alcalá, F.J; Sanjuán, M. E.; Ruiz, A.; del Barrio, G. 2021. Assessing the sensitivity of a Mediterranean commercial rangeland to droughts under climate change scenarios by means of a multidisciplinary integrated model. Agricultural Systems, 187: 103021. https://doi.org/10.1016/j.agsy.2020.103021
  • Sánchez de Dios, R; Sanjuán, M.E; Sainz, H.; Ruiz, A.; Martínez-Valderrama, J.; del Barrio, G. 2021. A dataset with complete geographic distributions of eight zonal monospecific forest types in mainland Spain. Data in Brief, 34: 106681. https://doi.org/10.1016/j.dib.2020.106681
  • Martínez-Valderrama, J., Guirado, E., Maestre, F.T. 2020. Discarded food and resource depletion. Nature Food 1, 660–662. https://doi.org/10.1038/s43016-020-00186-5
  • Martínez-Valderrama, J., Guirado, E., Maestre, F.T. 2020. Unraveling Misunderstandings about Desertification: The Paradoxical Case of the Tabernas-Sorbas Basin in Southeast Spain. Land. 9(8): 269. https://doi.org/10.3390/land9080269
  • Martínez-Valderrama, J., Guirado, E., Maestre, F.T. 2020. Desertifying deserts. Nature Sustainability. 3: 572-575. https://doi.org/10.1038/s41893-020-0561-2
  • Martínez-Valderrama, J.; Ibáñez, J.; Alcalá, F.J.; Martínez, S. 2020. SAT, a software for assessing the risk of desertification in Spain. Scientific Programming. https://doi.org/10.1155/2020/7563928
  • Martínez-Valderrama, J.; Ibáñez, J.; Alcalá, F.J. 2020. AQUACOAST: A simulation tool to explore coastal groundwater and irrigation farming interactions. Scientific Programming. 2020. https://doi.org/10.1155/2020/9092829
  • Gil-Sánchez JM, Herrera-Sánchez FJ, Rodríguez-Siles J, Manuel J, Díaz-Portero M.Á., Arredondo, Á., et al. Feeding Specialization of Honey Badgers in the Sahara Desert: A Trial of Life in a Hard Environment. 2020. Diversity. 12(59):1–11. https://doi.org/10.3390/d12020059
  • Ibáñez, J., Martínez-Valderrama, J., Lavado Contador, J.F., Pulido Fernández, M. 2020. Exploring the economic, social and environmental prospects for commercial natural annual grasslands by performing a sensitivity analysis on a multidisciplinary integrated model. Science of the Total Environment 705: 135860. https://doi.org/10.1016/j.scitotenv.2019.135860
  • Ibáñez, J.; Martínez-Valderrama, J. 2018. Global effectiveness of a range of group decision-making strategies in coping with forage and price variabilities in commercial rangelands – A modelling assessment. Journal of Environmental Management. 217: 531 – 541. https://doi.org/10.1016/j.jenvman.2018.03.127
  • Alcalá, F.J.; Martín-Martín, M.; Guerrera, F.; Martínez-Valderrama, J.; Robles-Marín, P. 2018. A feasible methodology for groundwater resource modelling for sustainable use in sparse-data drylands: results from the Amtoudi Oasis in the northern Sahara. Science of the Total Environment. 630: 1246 – 1257. https://doi.org/10.1016/j.scitotenv.2018.02.294
  • Martínez-Valderrama, J.; Ibáñez, J.; Del Barrio, G.; Alcalá, F.J.; Sanjuán, M. E.; Ruiz, A.; Hirche, A.; Puigdefábregas, J. 2017. Doomed to collapse: Why Algerian steppe rangelands are overgrazed and some lessons to help land-use transitions. Science of the Total Environment. 613-614: 1489-1497. https://doi.org/10.1016/j.scitotenv.2017.07.058
  • Martínez-Valderrama, J.; Ibáñez, J.; Del Barrio, G.; Sanjuán, M. E.; Alcalá, F.J.; Martínez-Vicente, S.; Puigdefábregas, J. 2016. Present and future of desertification in Spain: Implementation of a surveillance system to prevent land degradation. Science of the Total Environment. 563: 169 – 178. https://doi.org/10.1016/j.scitotenv.2016.04.065
  • del Barrio, G.; Sanjuan, M.E.; Hirche, A.; Puigdefabregas, J.; Yassin, M.; Ruiz, A.; Ouessar, M.; Martinez-Valderrama, J.; Essifi, B. 2016. Land degradation states and trends in north-western Maghreb drylands, 1998-2008. Remote Sensing. 8(7), 603. https://doi.org/10.3390/rs8070603.
  • Gil-Sánchez, J.M., Herrera-Sánchez, F.J., Álvarez, B., Arredondo, Á., Bautista, J., Cancio, I., Castillo, S., Díaz-Portero, M.Á., de Lucas, J., McCain, E., Pérez, J., Rodríguez-Siles, J., Sáez, J.M., Martínez-Valderrama, J., Valenzuela, G., Qninba, A. and Virgós, E. (2016). Evaluating methods for surveying the Endangered Cuvier’s gazelle Gazella cuvieri in arid landscapes. Oryx. 51(4): 648-655. https://doi.org/10.1017/S0030605316000430.
  • Ibáñez, J.; Lavado Contador, J.F.; Schnabel, S.; Pulido Fernández, M.; Martínez-Valderrama, J. 2016. Evaluating the influence of physical, economic and managerial factors on sheet erosion in rangelands of SW Spain by performing a sensitivity analysis on an integrated dynamic model. Science of the Total Environment. 544: 439-449. https://doi.org/10.1016/j.scitotenv.2015.11.128
  • Alcalá, F.J.; Martínez-Valderrama, J.; Robles-Marín, P.; Guerrera, F.; Martín-Martín, M.; Raffaelli, G.; Tejera de León, J.; Asebriy, L. 2015. Hydrological-economic model for the Amtoudi Oasis (southern Morocco, northern Sahara): a key case for sustainable groundwater use in sparse-data drylands. Science of the Total Environment. 537: 309-322. https://doi.org/10.1016/j.scitotenv.2015.07.062
  • Ibáñez, J.; Martínez Valderrama, J.; Taguas, E.V.; Gómez, J.A. 2014. Long-term implications of water erosion in olive-growing areas in southern Spain arising from a model-based integrated assessment at hillside scale. Agricultural Systems. 127: 70-80. https://doi.org/10.1016/j.agsy.2014.01.006
  • Ibáñez, J.; Lavado Contador, J.F.; Schnabel, S.; Pulido Fernández, M.; Martínez Valderrama, J. 2014. A model-based integrated assessment of land degradation by water erosion in a valuable Spanish rangeland. Environmental Modelling & Software. 55, 201-213. https://doi.org/10.1016/j.envsoft.2014.01.026
  • Ibáñez, J.; Martínez Valderrama, J.; Papanastasis, V; Evangelou, C; Puigdefábregas, J. 2014. A multidisciplinary model for assessing degradation in Mediterranean rangelands. Land Degradation and Development. 25(5), 468 – 482. https://doi.org/10.1002/ldr.2165
  • Martínez Valderrama, J.; Ibáñez, J.; Alcalá, F.J.; Domínguez, A.; Yassin, M.; Puigdefábregas, J. 2011. The use of a hydrological-economic model to assess sustainability in groundwater-dependent agriculture in drylands. Journal of Hydrology. 402: 80-91. https://doi.org/10.1016/j.jhydrol.2011.03.003
  • Hirche, A.; Salamani, M; Abdellaoui, A.; Benhouhou, S.; Martínez Valderrama, J. 2011. Landscape changes of desertification in arid areas: the case of south-west Algeria. Environmental Monitoring and Assessment. 179(1-4), 403-420. https://doi.org10.1007/s10661-010-1744-5
  • Ibáñez, J.; Martínez Valderrama, J.; Puigdefábregas, J. 2008. Assessing overexploitation in Mediterranean aquifers using system stability condition analysis. Ecological Modelling. 218: 260 – 266.  https://doi.org/10.1016/j.ecolmodel.2008.07.004
  • Ibáñez, J.; Martínez Valderrama, J.; Puigdefábregas, J. 2008. Assessing desertification risk using system stability condition analysis. Ecological Modelling. 213(2): 180 – 190. https://doi.org10.1016/j.ecolmodel.2007.11.017
  • Ibáñez, J.; Martínez Valderrama, J.; Schnabel, S. 2007. Desertification due to overgrazing in a dynamic commercial livestock-grass-soil system. Ecological Modelling. 205(3-4): 277-288. https://doi.org/10.1016/j.ecolmodel.2007.02.024
  • Ibáñez, J.; Martínez, S; Martínez Valderrama, J. 2004. Competitive and optimal control strategies for groundwater pumping by agricultural production units. Water Resources Research. 40(3). https:// doi.org/10.1029/2003WR002486

 

Other peer-reviewed papers

  • Martínez-Valderrama, J.; Gui, D.; Ahmed, Z. 2023. Oasification and desertification under the framework of Land Degradation Neutrality. Environmental Science Proceedings, 25(1), 94 https://doi.org/10.3390/ECWS-7-14238
  • Guirado, E.; Martínez-Valderrama, J. 2021. Potencial de la inteligencia artificial para avanzar en el estudio de la desertificación. Ecosistemas, 30(3): 2250. https://doi.org/10.7818/ECOS.2250
  • Martínez-Valderrama, J.; Guirado, E.; Maestre, F.T. 2021. Editorial. Desertificación: nuevos enfoques para un viejo problema. Ecosistemas, 30(3): 2312. https://doi.org/10.7818/ECOS.2312
  • Martínez-Valderrama, J.; Guirado, E.; Maestre, F.T. 2021. ¿Se puede cartografiar la desertificación? Luces y sombras de una tarea desafiante. Ecosistemas, 30(3): 2211. https://doi.org/10.7818/ECOS.2211
More peer-reviewed papers

  • Martínez-Valderrama, J.; Ibáñez, J.; Gartzia, R.; Alcalá, F.J. 2021. Dinámica de Sistemas para comprender los procesos de desertificación. Ecosistemas, 30(3): 21921. https://doi.org/10.7818/ECOS.2191
  • del Barrio G., Gao Z., Martínez-Valderrama J., Li X., Sanjuán M.E., Sun B., Ruiz A., Wang B. Puigdefábregas J. 2020. Comparing land degradation and regeneration trends in China drylands. Journal of Remote Sensing Proceedings. 3(4): 89-97 https://doi.org/10.11947/j.JGGS.2020.0409
  • Martínez-Valderrama, J.; Ibáñez, J. 2019. Herramientas de simulación para comprender y evaluar los sistemas de pastoreo mediterráneos. Revista Española de Estudios Agrosociales y Pesqueros. 254 (3/2019): 15 – 47. ISSN: 1575-1198.
  • Martínez Valderrama, J. 2017. El cambio global desde una perspectiva sistémica: propuestas para evitar el colapso. Revista de Responsabilidad Social de la Empresa. Nº 27-2017. Cuatrimestre III: 106 – 126. ISSN: 1888-9638.
  • Gallardo Olmedo, F.; Martínez-Valderrama, J.; Buñuel González, M. 2016. Fundamentos e implicaciones del cambio climático. Una visión global. Revista de Responsabilidad Social de la Empresa. Nº 23-2016. Cuatrimestre III: 17-54. ISSN: 1888-9638.
  • Díaz-Ambrona, C. G. H.; Etienne, A.; Martínez-Valderrama, J. 2008. Producciones potenciales de herbáceas, de bellota y carga ganadera en las dehesas de Extremadura. Pastos. Vol 38 (2): 243 – 258.
  • Díaz-Ambrona, C.; Martínez-Valderrama, J.; Calvete Sogo, H. 2011. Modelos para la simulación dinámica del crecimiento y desarrollo de pastos. Pastos. Vol 41(2): 127 – 162.
  • Etienne, A.; Martínez-Valderrama, J.; Hernández Díaz-Ambrona, C. 2008. Productive model of evergreen oak and annual pastures in Extremadura (Spain). Options Méditerranéennes Serie A: Séminaires Méditerranéens. Número 79: 65-68, ISBN 2-85352-378-0
  • Díaz-Ambrona, C. G. H.; González De Miguel, C.; Martínez-Valderrama, J. 2008. Three layer coffee plantation model. Acta Hortic. 802, 319–324. doi: 10.17660/ActaHortic.2008.802.41
  • Martínez Valderrama, J. 2006. El agua en España: un problema con muchas caras. Estrategia Global. Año III-Nº 14: 38-45. ISSN: 1697-0764
  • Gallardo, F.; Martínez-Valderrama, J. 2006. La próxima crisis del petróleo y otras consideraciones. Estrategia Global. Año III-Nº 13: 42-49. ISSN: 1697-0764
  • Martínez-Valderrama, J.; Ibáñez Puerta, J.; Martínez Vicente, S. 2003. Análisis de la desertificación por sobrepastoreo. Boletín de Dinámica de Sistemas. Sep 2003. ISSN 1988-7205. http://www.dinamica-de-sistemas.com/revista/0903h.htm
  • Martínez-Valderrama, J.; Garrido, A. 2003. El nuevo marco institucional del agua y la agricultura de regadío. Papeles de economía española. Vol 96: 145-161. ISSN: 0210-9107
  • Martínez-Valderrama, J.; Nieto Marín, C.; Martínez Vicente, S.; 2002. Una aplicación DSS para el mercado del vino. Distribución y consumo. Año 12. Vol 65: 63-68. ISSN 1132-0176

 

BOOKS

 

SCIENCE OUTREACH IN BLOGS

El blog del escritor J.M. Valderrama donde podrás comprar sus libros Días de nada y rosas, Altitud en vena y Aquí Bahía.