Teuvo Ahti

Scholia has a profile for Teuvo Tapio Ahti (Q10381015).

Teuvo ("Ted") Tapio Ahti (born 14 June 1934) is a Finnish botanist and lichenologist who has made significant contributions to the taxonomy and biogeography of lichens. Known particularly for his work on the lichen family Cladoniaceae, he has had a long career at the University of Helsinki beginning in 1963, and following his retirement in 1997, has continued his research at the Botanical Museum of the Finnish Museum of Natural History. His research output spans more than seven decades, comprising over 450 scientific publications across lichenology, mycology, and botanical science.

Ahti has conducted extensive fieldwork on all continents except Antarctica, with particular focus on Arctic regions and the Americas. He served as president of the International Association for Lichenology (1975–1981) and has received numerous honours, including the Acharius Medal in 2000 for lifetime contributions to lichenology. His expertise extends beyond lichens to include vegetation studies, phytogeography, and fungal taxonomy. Two Festschrifts have been dedicated to him: one in 1994 for his 60th birthday and another in 2024 for his 90th birthday. His influence on the field is reflected in the numerous taxa named in his honour, including four genera and more than twenty species.