Connection Calendar

Results & Uses > Conferences & Defenses

Thesis defense of Loïc Yung

Loïc Yung a pleasure to invite you to a thesis defense, published: Functioning and performance of the poplar-nettle agroforestry system for phyto-management of sites contaminated by ETM, with a view to obtaining the title of Doctor of Life and Environmental Sciences from the University of Burgundy Franche-Comté. It will take place on Thursday 23 January 2020 at 9 a.m., in the STGI Amphi - Building B - 4 place Tharradin, in Montbéliard.

Invitation to download HERE

Composition of the jury
Anissa LOUNES-HADJSAHRAOUI (Professor, ULCO-UCEIV) Rapporteur
Hervé JACTEL (Research Director, INRA - BIOGECO) Reporter
Vera SLAVEYKOVA (Professor, UNIGE-F.-AFOREL) Examiner
Frédérique CADIERE (Scientific manager, ADEME) Examiner
Michel CHALOT (Professor, UBFC - LCE) Thesis director
Geneviève CHIAPUSIO (MCF, USMB –CARRTEL) Co-supervisor
Coralie BERTHEAU (MCF, UBFC - LCE) Co-supervisor
Thierry GISSINGER (Environment Program Manager, FdF) Guest
David CAZAUX (Environmental Mediation Manager, INOVYN) Guest

Contamination leads to degradations generating dysfunctions of the soil and damage to their ecological functions. Phytomanagement, which uses plant species to extract, contain or degrade pollutants, appears to be a suitable solution for producing plant biomass while promoting the rehabilitation of these neglected soils. Recent approaches agree on the importance of plant associations in the optimization of these devices. This thesis project revolves around an innovative agroforestry system, associating the great nettle (Urtica dioica L.) with a model plant in the field, the poplar. Nettle seems to offer new perspectives because of the quality of its plant fiber and its ability to develop spontaneously on contaminated sites. However, its operation and performance within this agrosystem in contact with pollutants needs to be understood.
From two workshop sites contaminated with metallic trace elements (ETM) and different disciplinary approaches, this work allowed i) to better understand the functioning of this poplar-nettle device at the rhizospheric interface and its response to ETM via approaches of environmental barcoding and targeted metabolomics ii) to understand the role of model plants in the ecological restoration of these sites through phytosociological and entomological studies and to assess the involvement of associated communities in ETM flows by an ecotoxicological approach , and finally iii) to characterize and optimize the economic potential of this system according to an agroecological approach.
Finally, this thesis aims to be a reference work for future phytomanagement projects based on tree - nettle associations.

published on