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ISI Document Delivery No.: HK8WZ Times Cited: 1 Cited Reference Count: 76 Thomas, Zahra Rousseau-Gueutin, Pauline Abbott, Benjamin W. Kolbe, Tamara Le Lay, Hugo Marcais, Jean Rouault, Francois Petton, Christophe Pichelin, Pascal Le Hennaff, Genevieve Squividant, Herve Labasque, Thierry de Dreuzy, Jean-Raynald Aquilina, Luc Baudry, Jacques Pinay, Gilles French National Research Agency (ANR) [ANR-08-STRA-01]; European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" [607150]; French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages"; LTSER "Zone Atelier Armorique" This research was supported in part by the French National Research Agency (ANR; Project ANR-08-STRA-01) and the European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" (ITN-INTERFACES - FP7-PEOPLE-2013-No. 607150). This research was also supported by the French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages." The study was supported by the LTSER "Zone Atelier Armorique." We thank all the farmers of the ZAAr who kindly accepted the installation of the experiments in their fields. We also thank all the staff of the ILSTER Zone Atelier Armorique, especially the technicians of OSUR-INRA-AGROCAMPUS who helped in sampling and laboratory analysis. 1 0 Springer heidelberg Heidelberg 1436-378x Si ; International audience ; Over the last half century, humans have become the dominant force driving many of Earth's cycles. Intensive agriculture has simultaneously increased nutrient loading of pastoral landscapes and decreased the capacity of these ecosystems to retain or remove excess nutrients. Widespread degradation of terrestrial and aquatic ecosystems has triggered the establishment of ecological observatories, including the Zone ...

ISI Document Delivery No.: HK8WZ Times Cited: 1 Cited Reference Count: 76 Thomas, Zahra Rousseau-Gueutin, Pauline Abbott, Benjamin W. Kolbe, Tamara Le Lay, Hugo Marcais, Jean Rouault, Francois Petton, Christophe Pichelin, Pascal Le Hennaff, Genevieve Squividant, Herve Labasque, Thierry de Dreuzy, Jean-Raynald Aquilina, Luc Baudry, Jacques Pinay, Gilles French National Research Agency (ANR) [ANR-08-STRA-01]; European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" [607150]; French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages"; LTSER "Zone Atelier Armorique" This research was supported in part by the French National Research Agency (ANR; Project ANR-08-STRA-01) and the European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" (ITN-INTERFACES - FP7-PEOPLE-2013-No. 607150). This research was also supported by the French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages." The study was supported by the LTSER "Zone Atelier Armorique." We thank all the farmers of the ZAAr who kindly accepted the installation of the experiments in their fields. We also thank all the staff of the ILSTER Zone Atelier Armorique, especially the technicians of OSUR-INRA-AGROCAMPUS who helped in sampling and laboratory analysis. 1 0 Springer heidelberg Heidelberg 1436-378x Si ; International audience ; Over the last half century, humans have become the dominant force driving many of Earth's cycles. Intensive agriculture has simultaneously increased nutrient loading of pastoral landscapes and decreased the capacity of these ecosystems to retain or remove excess nutrients. Widespread degradation of terrestrial and aquatic ecosystems has triggered the establishment of ecological observatories, including the Zone ...

ISI Document Delivery No.: HK8WZ Times Cited: 1 Cited Reference Count: 76 Thomas, Zahra Rousseau-Gueutin, Pauline Abbott, Benjamin W. Kolbe, Tamara Le Lay, Hugo Marcais, Jean Rouault, Francois Petton, Christophe Pichelin, Pascal Le Hennaff, Genevieve Squividant, Herve Labasque, Thierry de Dreuzy, Jean-Raynald Aquilina, Luc Baudry, Jacques Pinay, Gilles French National Research Agency (ANR) [ANR-08-STRA-01]; European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" [607150]; French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages"; LTSER "Zone Atelier Armorique" This research was supported in part by the French National Research Agency (ANR; Project ANR-08-STRA-01) and the European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" (ITN-INTERFACES - FP7-PEOPLE-2013-No. 607150). This research was also supported by the French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages." The study was supported by the LTSER "Zone Atelier Armorique." We thank all the farmers of the ZAAr who kindly accepted the installation of the experiments in their fields. We also thank all the staff of the ILSTER Zone Atelier Armorique, especially the technicians of OSUR-INRA-AGROCAMPUS who helped in sampling and laboratory analysis. 1 0 Springer heidelberg Heidelberg 1436-378x Si ; International audience ; Over the last half century, humans have become the dominant force driving many of Earth's cycles. Intensive agriculture has simultaneously increased nutrient loading of pastoral landscapes and decreased the capacity of these ecosystems to retain or remove excess nutrients. Widespread degradation of terrestrial and aquatic ecosystems has triggered the establishment of ecological observatories, including the Zone ...

ISI Document Delivery No.: HK8WZ Times Cited: 1 Cited Reference Count: 76 Thomas, Zahra Rousseau-Gueutin, Pauline Abbott, Benjamin W. Kolbe, Tamara Le Lay, Hugo Marcais, Jean Rouault, Francois Petton, Christophe Pichelin, Pascal Le Hennaff, Genevieve Squividant, Herve Labasque, Thierry de Dreuzy, Jean-Raynald Aquilina, Luc Baudry, Jacques Pinay, Gilles French National Research Agency (ANR) [ANR-08-STRA-01]; European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" [607150]; French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages"; LTSER "Zone Atelier Armorique" This research was supported in part by the French National Research Agency (ANR; Project ANR-08-STRA-01) and the European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" (ITN-INTERFACES - FP7-PEOPLE-2013-No. 607150). This research was also supported by the French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages." The study was supported by the LTSER "Zone Atelier Armorique." We thank all the farmers of the ZAAr who kindly accepted the installation of the experiments in their fields. We also thank all the staff of the ILSTER Zone Atelier Armorique, especially the technicians of OSUR-INRA-AGROCAMPUS who helped in sampling and laboratory analysis. 1 0 Springer heidelberg Heidelberg 1436-378x Si ; International audience ; Over the last half century, humans have become the dominant force driving many of Earth's cycles. Intensive agriculture has simultaneously increased nutrient loading of pastoral landscapes and decreased the capacity of these ecosystems to retain or remove excess nutrients. Widespread degradation of terrestrial and aquatic ecosystems has triggered the establishment of ecological observatories, including the Zone ...

ISI Document Delivery No.: HK8WZ Times Cited: 1 Cited Reference Count: 76 Thomas, Zahra Rousseau-Gueutin, Pauline Abbott, Benjamin W. Kolbe, Tamara Le Lay, Hugo Marcais, Jean Rouault, Francois Petton, Christophe Pichelin, Pascal Le Hennaff, Genevieve Squividant, Herve Labasque, Thierry de Dreuzy, Jean-Raynald Aquilina, Luc Baudry, Jacques Pinay, Gilles French National Research Agency (ANR) [ANR-08-STRA-01]; European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" [607150]; French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages"; LTSER "Zone Atelier Armorique" This research was supported in part by the French National Research Agency (ANR; Project ANR-08-STRA-01) and the European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" (ITN-INTERFACES - FP7-PEOPLE-2013-No. 607150). This research was also supported by the French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages." The study was supported by the LTSER "Zone Atelier Armorique." We thank all the farmers of the ZAAr who kindly accepted the installation of the experiments in their fields. We also thank all the staff of the ILSTER Zone Atelier Armorique, especially the technicians of OSUR-INRA-AGROCAMPUS who helped in sampling and laboratory analysis. 1 0 Springer heidelberg Heidelberg 1436-378x Si ; International audience ; Over the last half century, humans have become the dominant force driving many of Earth's cycles. Intensive agriculture has simultaneously increased nutrient loading of pastoral landscapes and decreased the capacity of these ecosystems to retain or remove excess nutrients. Widespread degradation of terrestrial and aquatic ecosystems has triggered the establishment of ecological observatories, including the Zone ...

ISI Document Delivery No.: HK8WZ Times Cited: 1 Cited Reference Count: 76 Thomas, Zahra Rousseau-Gueutin, Pauline Abbott, Benjamin W. Kolbe, Tamara Le Lay, Hugo Marcais, Jean Rouault, Francois Petton, Christophe Pichelin, Pascal Le Hennaff, Genevieve Squividant, Herve Labasque, Thierry de Dreuzy, Jean-Raynald Aquilina, Luc Baudry, Jacques Pinay, Gilles French National Research Agency (ANR) [ANR-08-STRA-01]; European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" [607150]; French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages"; LTSER "Zone Atelier Armorique" This research was supported in part by the French National Research Agency (ANR; Project ANR-08-STRA-01) and the European Union Inter-national Training Network "Ecohydrological interfaces as critical hotspots for transformations of ecosystem exchange fluxes and biogeochemical cycling" (ITN-INTERFACES - FP7-PEOPLE-2013-No. 607150). This research was also supported by the French EC2CO grant "Caracterisation hydrologique et biogeochimique de la denitrification dans les paysages." The study was supported by the LTSER "Zone Atelier Armorique." We thank all the farmers of the ZAAr who kindly accepted the installation of the experiments in their fields. We also thank all the staff of the ILSTER Zone Atelier Armorique, especially the technicians of OSUR-INRA-AGROCAMPUS who helped in sampling and laboratory analysis. 1 0 Springer heidelberg Heidelberg 1436-378x Si ; International audience ; Over the last half century, humans have become the dominant force driving many of Earth's cycles. Intensive agriculture has simultaneously increased nutrient loading of pastoral landscapes and decreased the capacity of these ecosystems to retain or remove excess nutrients. Widespread degradation of terrestrial and aquatic ecosystems has triggered the establishment of ecological observatories, including the Zone ...

The characterization of saline water intrusion (SWI) and its hydrodynamics is a key issue to understand submarine groundwater discharge (SGD) and manage groundwater resources in coastal areas. To test and compare different methods of characterization and monitoring, a new experimental site has been constructed in a coastal alluvial aquifer north of Barcelona city (Catalonia, Spain). The site is located between 30 and 90 m from the seashore and comprises 16 shallow piezometers organized in nests of three with depths ranging between 15 and 25 m and 4 solitary piezometers. The objective of this paper is to combine different recently developed monitoring techniques to evaluate temporal variations in the aquifer hydrodynamics of the site at different spatial scales before and after the dry season of 2015. At the site scale, fibre optic distributed temperature sensing (FO-DTS), for the first time applied to study SWI, and cross-hole electrical resistivity tomography (CHERT) has been applied. At the meter/borehole scale, electrical conductivity of the formation has been applied not only in a repeated manner ("time lapse"), but also for the first time at relatively high frequency (1 sample every 10 min). CHERT has provided a better characterization of the seawater intrusion than electrical conductivity data obtained from piezometers. The combination of techniques has allowed improving the understanding of the system by: 1) characterizing the extent and shape of SWI; 2) differentiating two different dynamics in the aquifer; and 3) identifying preferential flow paths over different time and spatial intervals. Future challenges and the application of these techniques in other areas are also discussed. ; This work was funded by the projects CGL2013-48869-C2-1-R/2-R and CGL2016-77122-C2-1-R/2-R of the Spanish Government. We would like to thank SIMMAR (Serveis Integrals de Manteniment del Maresme) and the Consell Comarcal del Maresme in the construction of the research site. The authors want to thank the support of the ...