Isoprene and terpenoid emissions from Abies alba: Identification and emission rates under ambient conditions

► Seasonal variation of BVOC emissions from Abies alba trees under ambient conditions in Flanders (Belgium). ► Isoprene was the main emitted compound (86-93% of the total BVOC emissions), which was never quantified. ► Emission spectrum consisted of 27 compounds including 7 SQT.