The group´s activity is focused on three main topics:
Spatial and temporal modelling of N-compounds in surface water and groundwater: analysis of the physical environment; role of land use; prospection of N-compounds from diffuse sources; effects on water quality and freshwater biodiversity (from local to regional and basin scales).
Development of methods and procedures for a more accurate delimitation of the Nitrate Vulnerable Zones (based on the Nitrates Directive and the Water Framework Directive): technical tools for assessment and GIS mapping of the intrinsic vulnerability and the specific vulnerability to nitrate pollution (from local to regional and basin scales).
Monitoring of drainage and N-leaching (fertilizers) in the vadose zone: role of soil and the agricultural uses on the N-dynamics in the vadose zone and effect on the water quality of the underlying aquifer (field plot-scale evaluation).
Assessing the role and relevance of different environmental parameters (including land use) on the diffuse nitrate pollution of groundwater.
Arauzo M., Martínez-Bastida J.J. 2015. Environmental factors affecting diffuse nitrate pollution in the major aquifers of Central Spain: Groundwater vulnerability vs. groundwater pollution. Environmental Earth Science,
Field monitoring of drainage and N-leaching (on a real-time hourly basis) by using innovative technology.
Arauzo M., Valladolid M. 2013. Drainage and N-leaching in alluvial soils under agricultural land uses: Implications for the implementation of the Nitrates Directive. Agriculture, Ecosystems and Environment, 179: 94 -107.
Analyzing dynamics and interactions of the N-compounds in river-alluvial aquifer systems.
Arauzo M., Martínez-Bastida J.J., Valladolid M. 2011. Spatio-temporal dynamics of nitrogen in river-alluvial aquifer systems affected by diffuse pollution from agricultural sources: Implications for the implementation of the Nitrate Directive.Journal of Hydrology, 411: 155-168.
The group recently completed a field validation of an innovative technology to monitor drainage and leaching of pollutants in alluvial soils.
Arauzo M., Martínez-Bastida J.J., Valladolid M., Díez J.A. 2010. Field evaluation of Gee Passive Capillary Lysimeters for monitoring drainage in non-gravelly and gravelly alluvial soils: A useful tool to estimate nitrogen leaching from agriculture. Agricultural Water Management, 97: 465–474.