Martin-Luther Universität Halle-Wittenberg
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3rd in Germany
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Professor Jorg Kleeff, MD, FACS, FRCS is Chair of Visceral Surgery at Martin-Luther-University Halle-Wittenberg and Director of the Department of Visceral, Vascular and Endocrine Surgery at the University Hospital Halle (Saale), Germany. Prof. Kleeff started his scientific career 1997 as a postdoctoral research fellow at the University of California in Irvine, USA under the guidance of Prof. Murray Korc. Following these two years of research work, he started his clinical training with Prof. Markus Büchler at the Department of Visceral and Transplantation Surgery at the University of Bern, Switzerland. From 2001 to 2007 he worked at the Department of Surgery at the University of Heidelberg and from 2007 to 2015 at the Department of Surgery, Technische Universität München, Munich, Germany. From 2015-2016 he worked as a Consultant in Hepatobiliary & Pancreatic Surgery at the Royal Liverpool University Hospital and Honorary Professor at the Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, UK. Prof. Kleeff has published more than 230 peer-reviewed articles (h-index: 56) in internationally recognized medical journals as well as over 150 review articles and book chapters. His clinical work focuses on oncological surgery of the hepato-pancreato-biliary system as well as of the upper and lower gastrointestinal tract. Prof. Kleeff has given lectures at a number of international meetings and is member of different societies like the IHPBA, the Society of Surgeons of the Alimentary Tract (SSAT), the American Gastroenterology Association (AGA), and European Surgical Association (ESA) among others.
since 3/2014 Professor for “Macroecology” at the Martin-Luther-University Halle-Wittenberg.
2010 Call as Full Professor to the chair of “Landscape Ecology and Vegetation Science” (W3), University of Hohenheim; declined.
since 2004 Scientist at the UFZ Department of Community Ecology.
2001 - 2004 Postdoctoral Research Associate at the UFZ Department of Community Ecology.
1997 - 2000 PhD student at the chair of Systematic Botany, SG Geobotany, University of Bochum about flora and vegetation of ancient and recent forest in Westphalia. Study Groups Geobotany in Bochum Dissertation of Ingolf Kühn on ancient woodlands (in German)
1995 - 2001 Postgraduate Research Associate at the chair of Evolution and Biodiversity of Plants, University of Bochum (standard list of the flora of Germany, mapping scheme for the flora of Westphalia, Federal Information System on Genetic Ressources). Chair of Evolution and Biodiversity of Plants Federal Information System on Genetic Ressources
1991 - 1994 Grant of the 'National German Academic Foundation' (Studienstiftung des Deutschen Volkes). German Academic Foundation
1988 - 1994 Studies of biology and geography at the universities of Münster and Bochum, with a major in geobotany and minors in animal ecology and physical geography.
I'm interested in certain characteristics of insect societies, particularly reproductive division of labour and defences against pathogens. I'm studying worker reproduction in order to understand the evolution of the sterile worker caste, mainly using honeybees as a model system. Furthermore, I'm interested in the genetic basis of disease resistance, the plasticity in the activation of immune responses and the evolutionary forces driving immune gene evolution at the molecular level. We are also studying social context dependent gene expression changes in social insects with particular emphasis on bumblebees.
I use invading plants as model systems to understand how evolution acts in natural populations, by 1) detecting rapid evolutionary change; 2) identifying target traits as well as abiotic and biotic drivers of adaptive evolution; 3) exploring the genetic basis of adaptation, 4) disentangling adaptive from non-adaptive changes (genetic drift, admixture) and inbreeding effects; 5) quantifying the effects of abiotic conditions, biotic interactions and rapid evolution on demography and population dynamics.