• Dr Bartłomiej Glina (June 2019-July 2019), Poznań University of Life Sciences
  • Gareth Clay, PhD (Ida Pfeiffer Professorship WS 2018/19)
  • Prof. Herrera Fernández, Rafael - visiting professor (March 2015)
  • Mehdi Tazeh (December 2011 bis Mai 2012), University of Teheran, Faculty of Natural Ressources (Iran)
  • Khudodod Aknazarov (October 2011), Pamir Biological Institute of the Academy of Science of Tajikistan (Tadschkistan)
  • Johan le Roux (June 2011), Directorate of Forestry, Ministry of Agriculture, Water and Forestry, (Namibia)
  • Oksana Ivanova (October-December 2010), Buryat State University, Ulan-Ude (Russland). Research grant of Bundesministerium für Wissenschaft und Forschung (BMWF), URASIA-PACIFIC UNINET