Diffuse Pollution Group

Diffuse Pollution Group

Our activity focuses on achieving a better understanding of the vulnerability of continental water resources and aquatic ecosystems to diffuse pollution through an interdisciplinary and transversal approach (global change–water resources–agroecosystems). Our research is framed in the following Sustainable Development Goals: Goal 6 (availability and sustainable management of water), goal 13 (climate change) and goal 15 (sustainable management of terrestrial ecosystems) of the 2030 Agenda for Sustainable Development (UN Economic and Social Council).


The group is focused on the following topics:
  • Modelling of diffuse pollution processes (by nitrogen and phosphorus compounds); multivariate analysis of environmental parameters involved; effects of diffuse pollution on water resources quality and biodiversity.
  • Development of new diagnostic tools (in a GIS environment) to assess groundwater vulnerability and improve the criteria for Nitrate Vulnerable Zones delineation (Directive 91/676/EEC).
  • Characterisation of leaching of nitrogen and phosphorous compounds in the vadose zone; the role of land use and the physical environment.
     


Group Leader

ARAUZO SÁNCHEZ, MERCEDES
Researcher

Personnel

ESCUER CAZADOR, MIGUEL
Técnico Superior Especializado de OPIs

  •     Digital thematic maps (for free download)


    Map of Vulnerability to Nitrate Pollution from Diffuse Sources; Ebro basin; LU–IV Procedure. Map of Vulnerability to Nitrate Pollution from Diffuse Sources; Ebro basin; LU–IV Procedure.
    Map of Intrinsic Vulnerability; Ebro basin; IV Index. Map of Intrinsic Vulnerability; Ebro basin; IV Index.
    Articles describing the LU–IV Procedure and the IV Index. Articles describing the LU–IV Procedure and the IV Index.


  •     Development of the LU–IV Procedure and the IV Index


    A procedure has been designed and validated for mapping (in a GIS environment) the Vulnerability to Nitrate Pollution from Diffuse sources (LU–IV Procedure) and Intrinsic Vulnerability (IV Index). These new diagnostic tools notably improve the precision in the delimitation of Zones Vulnerable to Nitrate Pollution (Directive 91/676/CEE). We have applied them in the Ebro basin (Spain) and the middle Nile basin (Egypt). Financial support: Projects AGL2011–29861 and CGL2016–81110–R (AEI/FEDER, EU).

    Arauzo M., Valladolid M., García G, Andries, D.M.  2021. N and P behaviour in alluvial aquifers and in the soil solution of their catchment areas: how land use and the physical environment contribute to diffuse pollution. Science of the Total Environment (in press).

    Arauzo M., Valladolid M., García G. 2020. Cartografía de la vulnerabilidad de las aguas subterránea
    s a la contaminación por nitratos de fuentes difusas en la cuenca del río Ebro (N.E. de España). Estudios Geológicos 76, e132. https://doi.org/10.3989/egeol.43868.586

    Arauzo M., García G., Valladolid M. 2019. Assessment of the risks of N–loss to groundwater from data on N–balance surplus in Spanish crops: An empirical basis to identify Nitrate Vulnerable Zones. Science of the Total Environment, 696: 133713. https://doi.org/10.1016/j.scitotenv.2019.133713

    A.A. Salman, M. Arauzo, A.A. Elnazer. 2019. Groundwater quality and vulnerability assessment in west Luxor Governorate, Egypt. Groundwater for Sustainable Development, 8: 271–280. https://doi.org/10.1016/j.gsd.2018.11.009

    Arauzo M. 2017. Vulnerability of groundwater resources to nitrate pollution: a simple and effective procedure for delimiting Nitrate Vulnerable Zones. Science of the Total Environment 575, 799–812. https://doi.org/10.1016/j.scitotenv.2016.09.139


  •     Geostatistics and multivariate analysis applied to abiotic and biotic factors to identify polluted areas, evaluate the responses of edaphic nematofauna and provide the basis for modelling the ecological processes of the soil


    Johan van den Hoogen, Stefan Geisen, Devin Routh, Howard Ferris, Walter Traunspurger, David Wardle, Ron de Goede, Byron Adams, Wasim Ahmad, Walter S. Andriuzzi, Richard D. Bardgett, Michael Bonkowski, Raquel Campos-Herrera, Juvenil E. Cares, Tancredi Caruso, Larissa de Brito Caixeta, Xiaoyun Chen, Sofia dos Santos da Rocha Costa, Rachel Creamer, José Mauro da Cunha Castro, Marie Dam, Djibril Djigal, Miguel Escuer, Bryan Griffiths, Carmen Gutiérrez, Karin Hohberg, Daria Kalinkina, Paul Kardol, Alan Kergunteuil, Gerard Korthals, Valentyna Krashevska, Alexey Kudrin, Qi Li, Wenju Liang, Matthew Magilton, Mariette Marais José Antonio Rodríguez Martín, Elizaveta Matveeva, El Hassan Mayad, Christian Mulder, Peter Mullin, Roy Neilson, Duong Nguyen, Uffe N Nielsen, Hiroaki Okada, Juan Emilio Palomares Rius, Kaiwen Pan, Vlada Peneva, Loïc Pellissier, Julio Carlos Pereira da Silva, Camille Pitteloud, Thomas O. Powers, Kirsten Powers, Casper Quist, Sergio Rasmann, Sara Sánchez Moreno, Stefan Scheu, Heikki Setälä, Anna Sushchuk, Alexei Tiunov, Jean Trap, Wim van der Putten, Mette Vestergård, Cecile Villenave, Lieven Waeyenberge, Diana H.Wall, Rutger Wilschut, Daniel Wright, Jiue-in Yang, Thomas Ward Crowther. 2019. Soil nematode abundance and functional group composition at a global scale. Nature, 572: 194-2010. https://doi.org/10.1038/s41586-019-1418-6.

    Rodríguez Martin, J.A., Gutiérrez, C., Escuer M.,  Martín-Dacal M., Ramos-Miras J.J., Roca-Perez L., Boluda R., Nanos N. 2021 .Trends in soil mercury stock associated with pollution sources on a Mediterranean island (Majorca, Spain) Environmental Pollution 283: 117397.  https://doi.org/10.1016/j.envpol.2021.117397.