Clemens VON SCHEFFER - Admis au titre de docteur


Adresse Professionnelle
Institute for Ecosystem Research Kiel University Olshausenstraße 75 24118
Kiel ALLEMAGNE
cscheffer@ecology.uni-kiel.de

Doctorat Surfaces et interfaces continentales, Hydrologie


Thèse soutenue le 3 juillet 2019 - Institut National Polytechnique de Toulouse

Ecole doctorale : SDU2E - Sciences de l'Univers, de l'Environnement et de l'Espace

Sujet : Interactions entre l’Homme, le climat et l'environnement pendant l’Holocène dans les Alpes centrales du nord : une approche géochimique sur les tourbières de montagne

Mots-clés de la thèse : paléoenvironnement alpin,paléoclimate,géochimie des tourbières,alpes centrales du nord,impact humain,XRF portable,

Direction de thèse : Gaël LE ROUX

Co-direction de thèse : Ingmar Unkel

Cotutelle  Université Christian Albrecht de Kiel ALLEMAGNE
Descriptif : The joint supervision between the University of Kiel and the INP Toulouse (Ecolab at ENSAT) generated several opportunities for the successful progress of this PhD-project. With a monthly salary of 1450€ and an amount of approximately 6000€ per year, reserved for field work, analyses, conferences and publications, the project was and is solidly funded by the graduate school in Kiel. Additional funds came from F. De Vleeschouwer at EcoLab, the former supervisor, who secured funds (6000€) for the necessary geochemical analyses. Every institute is specialised on certain subjects, expertise, methods, techniques and equipment. The cooperation allowed the PhD-project to draw on resources of both participating universities. In this case, the working group at Ecolab in Toulouse has a lot of experience with peatlands and most of the equipment that is needed for processing peat cores to conduct certain geochemical analyses (e.g. ICP-MS) to answer scientific questions of early anthropogenic pollution, especially in the Pyrenees, as well as the reconstruction and understanding of regional and global dust fluxes over the last millennia. The Institute for Ecosystem Research in Kiel pursuits the general aim of understanding ecosystems, how they are changing currently, how they did in the past and the role of past human societies. It involves different working groups, from environmental history and -archives over paleoecology to georchaeology. The focus is on the influence of human activities on the environment, as they have become one of the most important force behind environmental change throughout the Holocene. At the institute in Kiel, the non-destructive and semi-quantitative XRF-scanner and other analytical tools were used. At EcoLab and the Observatoire Midi-Pyrénées, ICP-OES/MS analyses were carried out to complement the results obtained in Kiel. This also opened the opportunity to validate and calibrate the data obtained by XRF. The XRF allows for a faster and less expensive way of measuring a larger quantity of samples. This particular PhD-project is interested into the interaction of climate, environment and human activities in the northern Central Alps (Austria and Switzerland and therefore tackles partly similar research questions as the working group at Ecolab does in the Pyrenees. While the institute in Kiel has a stronger connection to paleoecology and archaeology, Toulouse has more expertise in the geochemistry of the critical zone (including peat). This cooperation allowed an easier access to the analytical resources that were needed and greatly contributed to this PhD-project.

Unité de recherche : Laboratoire écologie fonctionnelle et environnement UMR 5245 - Toulouse

Diplôme étranger - Master of Science

obtenu en septembre 2015 -  Université Christian Albrecht de Kiel
Option : Geosciences
Langues Vivantes : Anglais C2 - Courant - Français B2 - Intermédiaire supérieur - Allemand Maternel
Dernière mise à jour le 20 mai 2019