2013: ILS Workshop (Honorary Member): Stocker-Wörgötter, E.: “Photosymbiodemes: mycobiont genetics and secondary metabolism (Pkss and Pks genes)”. – University of Genova, 10.6.-13.6. 2013.
2000: Research Fellowship at the Smithonian Institution (Washington, USA) and organization of a workshop (“Culturing lichens and lichen symbionts”).
Field trips (Co-organizer and organizer)
2015: Lichen field trip on the Seychelles Islands
2014: Lichen field trip to Western Australia (Xanthoparmelia_Project)
2011: Field Trip in Tasmania: Lichens of Tasmania.
2009: Field trip in Western Australia (Karri- and Tingli forests, together with Ray Cranfield) and alpine regions of New South Wales (October 15/November 15, 2009) 2009: Field trip to Brazil (February 2009, cooperation with Eugenia Pereira, Universidade de Pernambuco, Recife, Brazil) “Lichens and “Tabuleiro”, Cerrado vegetation” in NE Brazil (Cerrado); Pernambuco and Paraiba).