PhD, Research Engineer, INRA

Address: INRA – Institut National de la Recherche Agronomique, UMR 1069 Sol Agro et hydrosystème Spatialisation de Rennes-Quimper

On deputation at IRD – Institut de Recherche pour le Développement, Géosciences Environnement Toulouse, 14 avenue Edouard Belin, 31400 Toulouse, FRANCE

Positionned at Indo-French Cell of Water Science, Indian Institute of Sciences, 560012 Bangalore, INDIA

Phone: +91 82 77 56 64 25

Email: laurent.ruiz|DONTWANTSPAM|


Main fields of research and expertise

Laurent RUIZ is agro-hydrologist, with interest on environmental observatory management and modelling of agro-ecosystems at watershed scale. His competences span temperate and tropical (Africa, India) conditions.

  • Integrated modelling of Water and Nutrient cycles in pristine and agricultural watersheds
  • Design of assessment of scenarios of adaptation of agriculture to global change

Research programs


Recent publications (2014-2018)

  1. Chitra-Tarak, R., Ruiz, L., Dattaraja, H. S., Kumar, M. S. M., Riotte, J., Suresh, H. S., McMahon, S. M. and Sukumar, R. (2018), The roots of the drought: Hydrology and water uptake strategies mediate forest-wide demographic response to precipitation. J Ecol. Accepted Author Manuscript.
  2. De Montety, V., Aquilina, L., Labasque, T., Chatton, E., Fovet, O., Ruiz, L., … & De Dreuzy, J. R. (2018). Recharge processes and vertical transfer investigated through long-term monitoring of dissolved gases in shallow groundwater. Journal of Hydrology, 560, 275-288.
  3. Mangiarotti, S., Sharma, A. K., Corgne, S., Hubert-Moy, L., Ruiz, L., Sekhar, M., & Kerr, Y. (2018). Can the global modeling technique be used for crop classification?. Chaos, Solitons & Fractals, 106, 363-378.
  4. Gascuel-Odoux, C., Fovet, O., Gruau, G., Ruiz, L., & Merot, P. (2018). Evolution of scientific questions over 50 years in the Kervidy-Naizin catchment: from catchment hydrology to integrated studies of biogeochemical cycles and agroecosystems in a rural landscape. Cuadernos de Investigación Geográfica.
  5. Braun, J. J., Riotte, J., Battacharya, S., Violette, A., Oliva, P., Prunier, J., Maréchal, JC., Ruiz, L., Audry S. & Subramanian, S. (2018). REY‐Th‐U Dynamics in the Critical Zone: Combined Influence of Reactive Bedrock Accessory Minerals, Authigenic Phases and Hydrological Sorting (Mule Hole Watershed, South India). Geochemistry, Geophysics, Geosystems.
  6. Buvaneshwari S, Riotte J, Sekhar M, Mohan Kumar MS, Sharma AK, Duprey JL, Audry S, Giriraj PR, Yerabham P, Moger H, Durand P, Braun JJ and Ruiz L (2017) High spatial variability of nitrate contamination in the hard rock aquifer of an irrigated catchment: Implications for water resource assessment. Science of the Total Environment. 579, 838-847.
  7. Braun, J. J., Riotte, J., Battacharya, S., Violette, A., Prunier, J., Bouvier, V., Candaudap F., Maréchal JC., Ruiz L., Smruthi Rekha Panda & Subramanian, S. (2017). REY‐Th‐U Solute Dynamics in the Critical Zone: Combined Influence of Chemical Weathering, Atmospheric Deposit Leaching, and Vegetation Cycling (Mule Hole Watershed, South India). Geochemistry, Geophysics, Geosystems. 18(12), 4409-4425.
  8. Sreelash K, Buis Samuel, Sekhar M., Ruiz Laurent, Sat Kumar Tomer, Guerif Martine (2017) Estimation of available water capacity components of two-layered soils using crop model inversion: Effect of crop type and water regime. Journal of Hydrology. 546, 166-178
  9. Robert Marion, Thomas Alban, Sekhar Muddu, Badiger Shrinivas, Ruiz Laurent, Willaume Magali, Leenhardt Delphine and Bergez Jacques-Eric (2017). Farm Typology in the Berambadi Watershed (India): Farming Systems Are Determined by Farm Size and Access to Groundwater. Water 2017, 9, 51;
  10. Robert M., Thomas A., Sekhar M., Badiger S., Ruiz L., Raynal H., Bergez J.E. (2017) Adaptive and dynamic decision-making processes: A conceptual model of production systems on Indian farms. Agricultural Systems, 157, 279-291in press.
  11. Robert M., Dury j., Thomas A., Therond O., Sekhar M., Badiger S., Ruiz L., Bergez J.E. (2016) CMFDM: A methodology to guide the design of a conceptual model of farmers’ decision-making processes. Agricultural Systems 148, 86-94.
  12. Sekhar M., Riotte J., Ruiz L., Jouquet P and Braun J.J. (2016) Influences of Climate and Agriculture on Water and Biogeochemical Cycles: Kabini Critical Zone Observatory. Proc. Ind. Nat. Sci. Acad., 82, 833-846.
  13. Hrachowitz, M., Benettin, P., Breukelen, B. M., Fovet, O., Howden, N. J., Ruiz, L., Van der Velde Y & Wade, A. J. (2016). Transit times—the link between hydrology and water quality at the catchment scale. Wiley Interdisciplinary Reviews: Water.
  14. Hrachowitz M., Fovet O., Ruiz L., Savenije H.H.G. 2015 Variable low pass filter characteristics of catchments can link 1/fα scaling and long-term stable biogeochemical responses to control water quality dynamics. Hydrological Processes Special Issue Tracer Advances Review,
  15. Levain Alix, Vertès Françoise, Ruiz Laurent, Delaby Luc, Gascuel-Odoux Chantal, Barbier Marc 2015 ‘I am an intensive guy’: The possibility and conditions of reconciliation through the ecological intensification framework. Environmental Management. 56 (5), 1184-1198
  16. Durand P., Moreau P., Salmon-Monviola J., Ruiz L., Vertès F. and Gascuel-Odoux C. 2015 Modeling the interplay between N cycling processes and mitigation options in farming catchments. Nitrogen Workshop Special issue.The Journal of Agricultural Science 153 (06), 959-974.
  17. Ruiz L., Sekhar M., Thomas A., Badiger S., Bergez J.E., Buis S., Corgne S., Riotte J., Raynal H., Bandhyopadhya S. & Gascuel C. 2015 Adaptation of Irrigated agriculture to climate CHAnge:  trans-disciplinary modelling of a watershed in South India. Hydrological Sciences and Water Security: Past, Present and Future. Proceedings of the International Association of Hydrological Sciences, Volume 366, 2015, pp.137-138.
  18. Bera R., Squividant H., Le Henaff G., Pichelin P., Ruiz L., Launay J., Vanhouteghem J., Aurousseau P. and Cudennec C. (2015). GéoSAS: A modular and interoperable Open Source Spatial Data Infrastructure for research. Proceedings of the International Association of Hydrological Sciences, 368, 9-14.
  19. De Lavenne, A.; Cudennec, C.; Fovet, O.; Ruiz, L.(2015) Valuing knowledge on temporal dynamics from long-term monitored basins for neighbouring sites. Hydrological Sciences and Water Security: Past, Present and Future. Proceedings of the International Association of Hydrological Sciences, Volume 366, 2015, pp.179-180.
  20. Fovet O., Ruiz L., Faucheux M., Molénat J., Sekhar M., Vertès F., Aquilina L., Gascuel-Odoux C. and Durand P. (2015) Using long time series of agricultural-derived nitrates pollutions for estimating catchment transit times. Journal of Hydrology, 522, 603–617.
  21. Fovet O., Ruiz L., Hrachowitz M., Faucheux M. and Gascuel-Odoux (2015). Hydrological hysteresis and its value for assessing process consistency in catchment conceptual models. Hydrology and Earth System Sciences, 19, 105-123. hess-19-105-20154
  22. Chitra-Tarak, R., Ruiz, L., Pulla, S., Dattaraja, H. S., Suresh, H. S., & Sukumar, R. (2015). And yet it shrinks: A novel method for correcting bias in forest tree growth estimates caused by water-induced fluctuations. Forest Ecology and Management, 336, 129-136.
  23. Riotte, J., Ruiz, L., Audry, S., Sekhar, M., Kumar, M. M., Soumya, B. S., & Braun, J. J. (2014). Impact of Vegetation and Decennial Rainfall Fluctuations on the Weathering Fluxes Exported from a Dry Tropical Forest (Mule Hole). Procedia Earth and Planetary Science, 10, 34-37.
  24. Hrachowitz, M., Fovet, O., Ruiz, L., Euser, T., Gharari, S., Nijzink, R., Freer, J., Savenije, H. H. G. and Gascuel-Odoux, C. (2014). Process consistency in models: The importance of system signatures, expert knowledge, and process complexity. Water Resources Research, 50(9), 7445-7469.
  25. Riotte, J., Maréchal, J. C., Audry, S., Kumar, C., Bedimo, J. P., Ruiz, L., Sekhar, M., Ciseb, M., Chitra Tarak, R., Varma, M.R.R., Lagane, C., Reddy, P. and Braun, J. J. (2014). Vegetation impact on stream chemical fluxes: Mule Hole watershed (South India). Geochimica et Cosmochimica Acta. 145, 116-138.
  26. Levain, A., Vertès, F., Ruiz, L. et Delaby, L. 2014. Articuler injonction au changement et processus d’innovation dans un territoire à fort enjeu écologique : regards croisés sur une expérience d’accompagnement. Fourrages  217: 69-78