Studied in the Faculty of Forestry at the Lithuanian Agricultural University (1966–1971) and received a specialisation in forest economy engineering. Doctoral dissertation Individual and group variability of radial growth of (Pinus sylvestris L.) in the zone of mixed forests was maintained in Minsk in 1984. The scientific activity of Jonas Karpavičius is connected to the Laboratory of Dendrochronology. Jonas Karpavičius worked in the position of engineer (1972) and, after finishing his doctorate, as a younger researcher (1975), researcher and senior researcher (1992–2005). Head of Laboratory in 1994 01 01 – 2002 01 13. Retired in 2011.